Basic information
- Standard SMILES
FC(F)(Cl)C(F)(F)Cl- InChIKey
DDMOUSALMHHKOS-UHFFFAOYSA-N- Molecular formula
- C2Cl2F4
- Average molar mass
- 170.92 g/mol
- Monoisotopic mass
- 169.93131824
Overview
1,2-Dichloro-1,1,2,2-tetrafluoroethane is a colorless, nearly odorless nonflammable gas. It may be mildly toxic and irritating by inhalation. It can asphyxiate by the displacement of air. Exposure of the container to prolonged heat or fire can cause it to rupture violently and rocket. It is used as a solvent and as a fire extinguishing agent.
Names & identifiers
- Preferred name
- Cfc 114
- IUPAC
- 1,2-dichloro-1,1,2,2-tetrafluoroethane
- English name
- dichlorotetrafluoroethane
- Molecular formula
- C2Cl2F4
- Molecular weight
- 170.92
Names & synonyms
Show more names
Database identifiers
- CAS
1320-37-2、76-14-2- PubChem CID
- 6429
- DTXSID
DTXSID8026434- ChEMBL
CHEMBL325436- UNII
- 6B5VVT93AR
- EC Number
- 200-937-7、215-300-9
- Nikkaji
- J4.169F
Properties
Computed structural properties
- XLogP
- 2.8
- Topological polar surface area
- 0 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 4
- Rotatable bonds
- 1
- Heavy atoms
- 8
- Formal charge
- 0
- Complexity
- 78
Experimental & physicochemical properties
LogP
log Kow = 2.82
2.8
Odor
Faint, ether-like odor at high concentrations
Odorless, but has a faint, ether-like odor in high concentrations
Density
1.455 g/cu cm at 25 °C
Relative density (water = 1): 1.5
1.5312 @25 °C
1.455 @25 °C
5.93(relative gas density)
Solubility
0.01 % (NIOSH, 2024)
Souble in alcohol, ether
0.013% in water
In water, 130 mg/L at 25 °C
Solubility in water at 25 °C: none
0.01%
Corrosivity
Noncorrosive
Liquid Refrigerant 114 will attack some forms of plastics, rubber, & coatings.
Boiling Point
38.8 °F at 760 mmHg (USCG, 1999)
3.5 °C
4.1 °C
38 °F
4.1 °C @760 [mm Hg]
3.8 °C @760 [mm Hg]
Decomposition
Dangerous; When heated to decomp ... they evolve highly toxic /hydrogen/ chloride fumes. /Chlorides/
Dangerous; when heated to decomp ... they emit highly toxic fumes. /Fluorides/
Under certain conditions, /chlorofluorocarbon/ vapors may decompose on contact with flames or hot surfaces, creating the potential hazard of inhalation of toxic decomposition products. /Chlorofluorocarbon/
The appearance of toxic decomposition products serves as warning of the occurrence of thermal decompositon and detection of a sharp acrid odor warns of the presence of these products. /Fluorocarbons/
Physicochemical properties
- Boiling point
- 1.97 °C · 1.97°C (rough estimate)
- Density
- 1.4623 · 1.4623 (estimate)
- refractive index
- 1.293 · 1.2930 (estimate)
- EWG's Food Scores
- 1 · 1
- FDA UNII
- 83 EP1472 · WG83EP1472
- EPA Substance Registry System
- Dichlorotetrafluoroethane (1320-37-2)
- TSCA
- TSCA listed
Safety & regulation
GHS classification
GHS Classification
Warning
H280 (100%): Contains gas under pressure; may explode if heated [Warning Gases under pressure]
P410+P403, and P502 (click each P-code to see the statement)
Aggregated GHS information provided per 120 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Danger
H335: May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
Hazard information
Regulatory Information
Chemical: Ethane, 1,2-dichloro-1,1,2,2-tetrafluoro-
Chemical: Ethane, dichlorotetrafluoro-
Ethane, 1,2-dichloro-1,1,2,2-tetrafluoro- is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Ethane, 1,2-dichloro-1,1,2,2-tetrafluoro- are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)
Ethane, 1,2-dichloro-1,1,2,2-tetrafluoro- (Refrigerant gas R114): Non hazardous
The New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.)
Fire Hazards
Excerpt from ERG Guide 126 [Gases - Compressed or Liquefied (Including Refrigerant Gases)]:
· Some may burn but none ignite readily.
· Some may burn but none ignite readily.
Not combustible. Heating will cause rise in pressure with risk of bursting. Gives off irritating or toxic fumes (or gases) in a fire.
Health Hazards
Prolonged exposure can cause narcotic effect or rapid suffocation. (USCG, 1999)
· Vapors may cause dizziness or asphyxiation without warning, especially when in closed or confined areas.
· Vapors may cause dizziness or asphyxiation without warning, especially when in closed or confined areas.
DOT ID and Guide
1958 126
1958 126
1958 126
FDA Requirements
The Food and Drug Administration (FDA), after consultation with the Environmental Protection Agency (EPA), is amending FDA's regulation on the use of ozone-depleting substances (ODSs) in selfpressurized containers to remove the essential-use designations for flunisolide, triamcinolone, metaproterenol, pirbuterol, albuterol and ipratropium in combination, cromolyn, and nedocromil used in oral pressurized metered-dose inhalers (MDIs). The Clean Air Act requires FDA, in consultation with the EPA, to determine whether an FDA-regulated product that releases an ODS is an essential use of the ODS. FDA has concluded that there are no substantial technical barriers to formulating flunisolide, triamcinolone, metaproterenol, pirbuterol, albuterol and ipratropium in combination, cromolyn, and nedocromil as products that do not release ODSs, and therefore they will no longer be essential uses of ODSs as of the effective dates of this rule. MDIs for these active moieties containing an ODS may not be marketed after the relevant effective date. DATES: Removal of Part 2.125(e)(2)(iii) and 2.125(e)(4)(vii) is effective June 14, 2010. Removal of Part 2.125(e)(1)(v) and 2.125(e)(4)(iv) is effective December 31, 2010. Removal of Part 2.125(e)(1)(iii) is effective June 30, 2011. Removal of 2.125(e)(2)(iv) and Part 2.125(e)(4)(viii) is effective December 31, 2013. /Ozone-Depleting Substances/
Use of ozone-depleting substances in foods, drugs, devices, or cosmetics. (a) As used in this section, ozone-depleting substance (ODS) means any class I substance as defined in 40 CFR part 82, appendix A to subpart A, or class II substance as defined in 40 CFR part 82, appendix B to subpart A. (b) Except as provided in paragraph (c) of this section, any food, drug, device, or cosmetic that is, consists in part of, or is contained in an aerosol product or other pressurized dispenser that releases an ODS is not an essential use of the ODS under the Clean Air Act. (c) A food, drug, device, or cosmetic that is, consists in part of, or is contained in an aerosol product or other pressurized dispenser that releases an ODS is an essential use of the ODS under the Clean Air Act if paragraph (e) of this section specifies the use of that product as essential. For drugs, including biologics and animal drugs, and for devices, an investigational application or an approved marketing application must be in effect, as applicable. ... (e) The use of ODSs in the following products is essential: ... (2) Metered-dose short-acting adrenergic bronchodilator human drugs for oral inhalation. Oral pressurized metered-dose inhalers containing the following active moieties: ... (iv) Pirbuterol. ... (4) Other essential uses. (iii) Anesthetic drugs for topical use on accessible mucous membranes of humans where a cannula is used for application. ... (vi) Metered-dose atropine sulfate aerosol human drugs administered by oral inhalation. ... (viii) Metered-dose ipratropium bromide and albuterol sulfate, in combination, administered by oral inhalation for human use. (ix) Sterile aerosol talc administered intrapleurally by thoracoscopy for human use. /Ozone-Depleting Substances/
Special Reports
Zakhari S, Aviado DM; Cardiovascular Toxicology of Aerosol Propellants, Refrigerants and Related Solvents; Target Organ Toxicology Series: Cardiovascular Toxicology, XII+ 388 pages; Raven Press: New York, NY 281-326 (1982). Review of the toxicology of aerosol propellants, refrigerants and related solvents on the cardiovascular system of humans.
Crooke ST; Solvent inhalation; Tex Med 68 (7): 67-9 (1972). A short review of the literature concerning solvent inhalation is presented. Methods of administration, pharmacology and toxicology of abused solvents are discussed as are the characteristics of solvent inhalers and addictive potential.
Production and Consumption of Ozone Depleting Substances under the Montreal Protocol 1986 - 2004[UNEP; Ozone Secretariat UNEP November 2005, Available from, as of march 11, 2013: http://ozone.unep.org/Publications/Production_and_consumption2005.pdf]
The Montreal Protocol on Substances that Deplete the Ozone Layer[UNEP; Ozone Secretariat United Nations Environment Programme, The Montreal Protocol on Substances that Deplete the Ozone Layer, Available from, as of March 11, 2013: http://ozone.unep.org/pdfs/Montreal-Protocol2000.pdf]
For more Special Reports (Complete) data for 1,2-DICHLORO-1,1,2,2-TETRAFLUOROETHANE (7 total), please visit the HSDB record page.
Reactivity Profile
1,2-DICHLORO-1,1,2,2-TETRAFLUOROETHANE is chemically inert in many situations, but can react violently with strong reducing agents such as the very active metals and the active metals. Can react with strong oxidizing agents or weaker oxidizing agents under extremes of temperature. The reaction of aluminum with various halogenated hydrocarbons produces a self-sustaining reaction with sufficient heat to melt aluminum pieces, examples of other halogenated hydrocarbons are fluorotrichloromethane, dichlorodifluoromethane, chlorodifluoromethane, tetrafluoromethane. The vigor of the reaction appears to be dependent on the combined degree of fluorination and the vapor pressure [Chem. Eng. News 39(27):44(1961)].
Safety & protection
Fire Fighting
Excerpt from ERG Guide 126 [Gases - Compressed or Liquefied (Including Refrigerant Gases)]:
In case of fire in the surroundings, use appropriate extinguishing media. In case of fire: keep cylinder cool by spraying with water. Combat fire from a sheltered position.
First Aid Measures
Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer for medical attention .
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Accidental Release Measures
· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.
· Do not touch or walk through spilled material.
· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.
· Do not touch or walk through spilled material.
First Aid
INHALATION: Remove to fresh air. If breathing has stopped, give artificial respiration. If breathing is difficult, give oxygen.
General First Aid:
General First Aid:
(General first aid procedures)
Exposure Control and Personal Protection
· Wear positive pressure self-contained breathing apparatus (SCBA).
· Wear positive pressure self-contained breathing apparatus (SCBA).
1000.0 [ppm]
Fire Fighting Procedures
Firefighters should wear self-contained, NIOSH-approved breathing apparatus for protection against suffocation and possible toxic decomposition products. Proper eye and skin protection should be provided. Use water spray to keep fire-exposed containers cool.
In case of fire: keep cylinder cool by spraying with water. Combat fire from a sheltered position.
/During firefighting wear/ self-contained breathing apparatus with full facepiece operated in pressure-demand or other positive pressure mode.
Evacuation: If fire becomes uncontrollable or container is exposed to direct flame - consider evacuation of one-half (1/2) mile radius.
If material on fire or involved in fire: Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty). Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Do not use water on material itself. Use water spray to knock-down vapors.
Storage Conditions
Store in a cool, well-ventilated area of low fire risk and out of direct sunlight. Protect cylinder and its fittings from physical damage. Storage in subsurface locations should be avoided. Close valve tightly after use and when empty.
Fireproof if in building. Cool.
Store in cool place free from material of an inflammable nature, in suitable metal containers.
Cleanup Methods
If ... spilled or leaked, the following steps should be taken: 1. Ventilate area of spill or leak. 2. If the gas is leaking, stop the flow. 3. If the liquid is spilled or leaked, allow to vaporize.
Ventilation. Never direct water jet on liquid. Do not let this chemical enter the environment. Personal protection: chemical protection suit including self-contained breathing apparatus.
Disposal Methods
SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational harm/injury/toxicity or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in soil or water; effects on animal and plant life; and conformance with environmental and public health regulations.
Because of recent discovery of potential ozone decomposition in the stratosphere by fluorotrichloromethane, this material should be released to the environment only as a last resort. Waste material should be /recovered and/ returned to the vendor, or to licensed waste disposal company.
SRP: Wastewater from contaminant suppression, cleaning of protective clothing/equipment, or contaminated sites should be contained and evaluated for subject chemical or decomposition product concentrations. Concentrations shall be lower than applicable environmental discharge or disposal criteria. Alternatively, pretreatment and/or discharge to a permitted wastewater treatment facility is acceptable only after review by the governing authority and assurance that "pass through" violations will not occur. Due consideration shall be given to remediation worker exposure (inhalation, dermal and ingestion) as well as fate during treatment, transfer and disposal. If it is not practicable to manage the chemical in this fashion, it must be evaluated in accordance with EPA 40 CFR Part 261, specifically Subpart B, in order to determine the appropriate local, state and federal requirements for disposal.
Toxicology
Interactions
Cardiac sensitization potential of CFC-114 is considered moderate. /Investigators/ found evidence of serious arrythmia in 1 of 12 dogs exposed at an atmosphere of 25,000 ppm CFC-114 plus intravenous epinephrine.
Whether inhalation of a freon gas mixture, the propellant of the commercial metered dose aerosols, consisting of freons 11, 12 and 114, reduces the bronchodilating effects of inhaled salbutamol or ipratropium bromide or causes cardiac arrhythmias in control, asthmatic and bronchitic patients was studied. FEV1 (1 sec forced expiratory volume) and flows measured at different lung volumes on the maximal effort expiratory flow volume curve were measured for 6 hr. Inhalation of freon caused no significant overall reduction in the salbutamol and ipratropium bromide response in any group. Arrhythmias only occurred among the asthmatic and bronchitic patients, and were most frequent after salbutamol. Ventricular extrasystoles occurred in 3 cases, all after salbutamol and in 2 of these in combination with freon inhalation. In 1 patient there was also hypoxia and hypercapnia. The combined effects of hypoxia, hypercapnia, catecholamines and freon on the heart are a more likely cause of arrhythmia than the effect of freon alone.
Many unsubstituted and halogenated hydrocarbons were capable of sensitizing the mammalian heart to iv injected epinephrine, resulting in serious and sometimes fatal cardiac arrhythmias. This experiment was performed to determine if cardiac sensitization could occur in animals in the absence of an exogenous source of epinephrine as this phenomenon was alleged to cause sudden deaths in humans in the absence of exogenous epinephrine. Beagle dogs were trained to run on a treadmill to increase their circulating level of epinephrine. While being exercised, they were exposed to fluorocarbon 11, fluorocarbon 12 or fluorocarbon 114, which were tested previously and found to be capable of sensitizing the dog's heart to iv injected epinephrine. While fluorocarbon 12 and fluorocarbon 114 produced cardiac sensitization, a higher concentration was needed to produce this effect than with the iv administration of epinephrine. Cardiac sensitization was not produced by fluorocarbon 11 at the levels tested. None of the animals died.
Most nonanesthetics (inhaled compounds that neither cause anesthesia when given alone nor decrease the partial pressure of a known inhaled anesthetic required to produce anesthesia) and transitional compounds (inhaled compounds that are less potent than would be predicted by the Meyer-Overton hypothesis) cause convulsions. A possible exception is the perfluoroalkane series of nonanesthetics. The present study tested whether perfluoroalkanes do provide an exception. Further, we tested whether the convulsant effects of nonanesthetic and transitional compounds were additive. The nonanesthetic perfluoropropane caused convulsions at 7.5 +/- 0.7 atm (mean +/- SD). Convulsions also were produced by perfluorocyclobutane (0.976 +/- 0.002 atm), 1,2-dichlorotetrafluoroethane (0.358 +/- 0.011 atm), 2,3-dichlorooctafluorobutane (0.085 +/- 0.007 atm), 1,2-dichlorohexafluorocyclobutane (0.055 +/- 0.007 atm), and flurothyl (0.00156 +/- 0.00039 atm). Of these, 1,2-dichlorotetrafluoroethane is a transitional compound, the remainder being nonanesthetics. The combination of flurothyl plus 1,2-dichlorohexafluorocyclobutane gave evidence of antagonism (a 17% +/- 21% deviation from additivity; P < 0.05), whereas the combination of 1,2-dichlorotetrafluoroethane plus 2,3-dichlorooctafluorobutane gave evidence of synergy (a -13% +/- 8% deviation from additivity; P < 0.05). The combinations of perfluoropropane plus perfluorocyclobutane (-4% +/- 15%), and perfluoropropane plus 1,2-dichlorohexafluorocyclobutane (-1% +/- 26%) did not produce results that deviated significantly from additivity. We conclude that pairs of these compounds either produce convulsions in an additive manner, a finding consistent with (but not proving) a common mode of action; or deviate modestly from additivity, a finding suggesting that at least a portion of the mechanistic basis for convulsions might differ, particularly for flurothyl plus other nonanesthetics, or for the combination of non-anesthetics and transitional compounds.
The effect of a mixture of Freon 12 and Freon 114 in a 40 to 60 ratio on arterial pressure and cardiac rhythm in cats was studied. Eighteen tests were performed on ten cats anesthetized with urethane. A tracheotomy was performed and 3 g of the freon mixture was sprayed for 20 sec into the opening. During the test, heart rate, breathing, and arterial pressure were monitored. The amount of freon consumed was measured by weighing the aerosol container before and after use. Within 13 sec, arterial pressure began to drop. By the end of the test, the pressure had decreased from 110 to 50 or 25 mL. Within 3 min of the end of the test, arterial pressure had returned to initial value. The sinus rhythm of the heart decreased an average of 10 strokes/min. One cat suffered an atrioventricular blockade with a subsequent fibrillation of the ventricles. Changes in frequency and depth of breathing were insignificant except for one case of brief apnea. These compounds may be cardiotoxic, and further studies are needed to determine optimum, harmless dose.
Environmental Fate
TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 280(SRC), determined from a log Kow of 2.82(2) and a regression-derived equation(3), indicates that 1,2-dichloro-1,1,2,2-tetrafluoroethane is expected to have moderate mobility in soil(SRC). Volatilization of 1,2-dichloro-1,1,2,2-tetrafluoroethane from moist soil surfaces is expected to be an important fate process(SRC) given a Henry's Law constant of 1.25 atm-cu m/mole(4). 1,2-Dichloro-1,1,2,2-tetrafluoroethane is expected to volatilize from dry soil surfaces(SRC) based upon a vapor pressure of 2014 mm Hg at 25 °C(5). 1,2-Dichloro-1,1,2,2-tetrafluoroethane and other chlorofluorocarbons have been shown to biodegrade under anaerobic conditions, but not aerobic conditions(6).
AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 280(SRC), determined from a log Kow of 2.82(2) and a regression-derived equation(3), indicates that 1,2-dichloro-1,1,2,2-tetrafluoroethane is not expected to adsorb to suspended solids and sediment(SRC). Volatilization from water surfaces is expected(4) based upon a Henry's Law constant of 1.25 atm-cu m/mole(5). Using this Henry's Law constant and an estimation method(4), volatilization half-lives for a model river and model lake are 3.8 hours and 5.2 days, respectively(SRC). According to a classification scheme(6), measured BCF values ranging from 15 to 32(7) suggest the potential for bioconcentration in aquatic organisms is low to moderate(SRC). 1,2-Dichloro-1,1,2,2-tetrafluoroethane and other chlorofluorocarbons have been shown to biodegrade under anaerobic conditions, but not aerobic conditions(8).
ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), 1,2-dichloro-1,1,2,2-tetrafluoroethane, which has a vapor pressure of 2014 mm Hg at 25 °C(2), is expected to exist solely as a gas in the ambient atmosphere. Gas-phase 1,2-dichloro-1,1,2,2-tetrafluoroethane is extremely stable in the troposphere. This compound does not react with photochemically produced hydroxyl radicals, ozone molecules or nitrate radicals(3). 1,2-Dichloro-1,1,2,2-tetrafluoroethane does not contain chromophores that absorb at wavelengths >290 nm(4) and, therefore, is not expected to be susceptible to direct photolysis by sunlight(SRC). This compound will gradually diffuse into the stratosphere above the ozone layer where it will slowly degrade due to direct photolysis from UV-C radiation and contribute to the catalytic removal of stratospheric ozone(3). The half-life for this reaction has been estimated to range from 126 to 310 years(5).
Exposure Routes
The substance can be absorbed into the body by inhalation.
inhalation, skin and/or eye contact (liquid)
Ecotoxicity Excerpts
/FIELD STUDIES/ Experimental evidence suggests that increased UV-B irradiation at the earth's surface, resulting from ozone depletion /caused by the atmospheric chlorofluorocarbons/, would have deleterious effects on both terrestrial and aquatic biota. Despite uncertainties resulting from the complexities of field experiments, the data currently available suggest that crop yields and forest productivity are vulnerable to increased levels of solar UV-B radiation. Existing data also suggest that increased UV-B radiation will motify the distribution and abundance of plants, and change ecosystem structure. /UV-B Radiation/
Signs and Symptoms
Suffocation.
ON CONTACT WITH LIQUID: FROSTBITE.
See Skin.
irritation respiratory system; asphyxia; cardiac arrhythmias, cardiac arrest; liquid: frostbite
Medical Surveillance
Initial Medical Screening: Employees should be screened for history of certain medical conditions which might place the employee at increased risk from Refrigerant 114 exposure. /These are/ chronic respiratory and cardiovascular disease. Periodic Medical Examination: Any employee developing /these/ conditions should be referred for further medical examination.
Soil Adsorption/Mobility
The Koc of 1,2-dichloro-1,1,2,2-tetrafluoroethane is estimated as 280(SRC), using a log Kow of 2.82(1) and a regression-derived equation(2). According to a classification scheme(3), this estimated Koc value suggests that 1,2-dichloro-1,1,2,2-tetrafluoroethane is expected to have moderate mobility in soil.
Regulatory information
FDA Requirements
The Food and Drug Administration (FDA), after consultation with the Environmental Protection Agency (EPA), is amending FDA's regulation on the use of ozone-depleting substances (ODSs) in selfpressurized containers to remove the essential-use designations for flunisolide, triamcinolone, metaproterenol, pirbuterol, albuterol and ipratropium in combination, cromolyn, and nedocromil used in oral pressurized metered-dose inhalers (MDIs). The Clean Air Act requires FDA, in consultation with the EPA, to determine whether an FDA-regulated product that releases an ODS is an essential use of the ODS. FDA has concluded that there are no substantial technical barriers to formulating flunisolide, triamcinolone, metaproterenol, pirbuterol, albuterol and ipratropium in combination, cromolyn, and nedocromil as products that do not release ODSs, and therefore they will no longer be essential uses of ODSs as of the effective dates of this rule. MDIs for these active moieties containing an ODS may not be marketed after the relevant effective date. DATES: Removal of Part 2.125(e)(2)(iii) and 2.125(e)(4)(vii) is effective June 14, 2010. Removal of Part 2.125(e)(1)(v) and 2.125(e)(4)(iv) is effective December 31, 2010. Removal of Part 2.125(e)(1)(iii) is effective June 30, 2011. Removal of 2.125(e)(2)(iv) and Part 2.125(e)(4)(viii) is effective December 31, 2013. /Ozone-Depleting Substances/
Use of ozone-depleting substances in foods, drugs, devices, or cosmetics. (a) As used in this section, ozone-depleting substance (ODS) means any class I substance as defined in 40 CFR part 82, appendix A to subpart A, or class II substance as defined in 40 CFR part 82, appendix B to subpart A. (b) Except as provided in paragraph (c) of this section, any food, drug, device, or cosmetic that is, consists in part of, or is contained in an aerosol product or other pressurized dispenser that releases an ODS is not an essential use of the ODS under the Clean Air Act. (c) A food, drug, device, or cosmetic that is, consists in part of, or is contained in an aerosol product or other pressurized dispenser that releases an ODS is an essential use of the ODS under the Clean Air Act if paragraph (e) of this section specifies the use of that product as essential. For drugs, including biologics and animal drugs, and for devices, an investigational application or an approved marketing application must be in effect, as applicable. ... (e) The use of ODSs in the following products is essential: ... (2) Metered-dose short-acting adrenergic bronchodilator human drugs for oral inhalation. Oral pressurized metered-dose inhalers containing the following active moieties: ... (iv) Pirbuterol. ... (4) Other essential uses. (iii) Anesthetic drugs for topical use on accessible mucous membranes of humans where a cannula is used for application. ... (vi) Metered-dose atropine sulfate aerosol human drugs administered by oral inhalation. ... (viii) Metered-dose ipratropium bromide and albuterol sulfate, in combination, administered by oral inhalation for human use. (ix) Sterile aerosol talc administered intrapleurally by thoracoscopy for human use. /Ozone-Depleting Substances/
Safety data
- tsca
- TSCA listed
Chemistry & industry
Pharmacology
Absorption, Distribution and Excretion
Human and animal studies indicate rapid excretion of inhaled CFC-114. In a study with radiolabeled CFC-114, 30 minute retention of the dose inhaled in a single breath was 12% versus 23%, 10%, and 20% for comparable doses of trichlorofluoromethane (CFC-11), dichlorodifluoro-methane (CFC-12), and trifluorotrichloroethane (CFC-113), respectively.
... Main factor affecting fate of fluorocarbons is body fat, where they are concentrated & slowly released into blood at concn that should not cause any risk of cardiac sensitization. /Fluorocarbons/
Abosrption of fluorocarbons is much lower after oral ingestion (35-48 times) than after inhalation. ... The lung generally has the highest fluorocarbon concentrations on autopsy. /Fluorocarbons/
Although fluorocarbons cause cardiac sensitization in certain animal species, rapid elimination prevents the development of cardiotoxic concentrations from aerosol bronchodilator use except at exceedingly high doses (12 to 24 doses in 2 minutes). /Fluorocarbons/
For more Absorption, Distribution and Excretion (Complete) data for 1,2-DICHLORO-1,1,2,2-TETRAFLUOROETHANE (7 total), please visit the HSDB record page.
Uses & manufacturing
Uses
Used as a propellant, refrigerant, and solvent. [ACGIH]
See CHLOROFLUOROCARBONS
For 1,2-Dichloro-1,1,2,2-tetrafluoroethane (USEPA/OPP Pesticide Code: 326200) there are 0 labels match. /SRP: Not registered for current use in the U.S., but approved pesticide uses may change periodically and so federal, state and local authorities must be consulted for currently approved uses./
... Blowing agent for cellular polymers. ...Solvent and diluent in polymerization of fluoro-olefins, cleaning and degreasing printed circuit boards, preparation of explosives and extraction of volatile substances. Foaming agent in fire extinguishing and aerosols ... Inorganic synthesis in preparation of uranium tetrafluoride, Freons, and polymer intermediates. ... In aerosols with other Freons to lower vapor pressure and produce non-flammable aerosol propellants ... Refrigerant in industrial cooling and air conditioning systems. /Used/ in inhibiting of metal erosion in hydraulic fluids; in strengthening glass bottles; in magnesium refining; and as a reflux liquid to assist heat removal.
Mechanical vapor compression systems use fluorocarbons for refrigeration and air conditioning and account for ... majority of refrigeration capability in us. ... fluorocarbons are used as refrigerants in home appliances, mobile air conditioning units, retail food refrigeration systems & ... chillers. /Fluorocarbons/
MEDICATION /Former Use/
Impurities
Chlorofluoroalkanes (and also the alternative HCFCs and HFCs) produced on an industrial scale are subject to stringent standards. Impurities must not exceed the following limits (vol %): acids, 0; moisture, <0.001; higher-boiling fractions, <0.05; and other gases, 2. /Chlorofluoroalkanes/
U.S. Imports
(1972) NEGLIGIBLE
(1975) NEGLIGIBLE
U.S. Production
2023: 1,000,000 - <5,000,000 lb
(1972) 1.76X10+10 GRAMS
(1975) PROBABLY GREATER THAN 1.82X10+6 GRAMS
Ethane, 1,2-dichloro-1,1,2,2-tetrafluoro- is listed as a High Production Volume (HPV) chemical (65FR81686). Chemicals listed as HPV were produced in or imported into the U.S. in >1 million pounds in 1990 and/or 1994. The HPV list is based on the 1990 Inventory Update Rule. (IUR) (40 CFR part 710 subpart B; 51FR21438).
Production volume for non-confidential chemicals reported under the 2006 Inventory Update Rule. Chemical: Ethane, 1,2-dichloro-1,1,2,2-tetrafluoro-. Aggregated National Production Volume: 1 to <10 million lbs.
For more U.S. Production (Complete) data for 1,2-DICHLORO-1,1,2,2-TETRAFLUOROETHANE (9 total), please visit the HSDB record page.
Consumption Patterns
For low molecular weight fluorinated hydrocarbons) 43% as aerosol propellant; 32% as refrigerant; 10% for synthesis of resins; 5% as solvent and degreaser; 4% as foam-blowing agent; 6% for misc uses including exports (1969)
CFC-114 ... is mainly used with centrifugal compressors /for refrigerant applications/ (1984)
Refrigeration/air conditioning, 43%; foam blowing agents, 20%; polymer precursors, 13%; solvent cleaning, 12% aerosol propellants, 2%; medical equipment sterilization, 3%; other, 7%. (1991). /Estimates are for CFC-11,-12,-113,-114,-115 and HCFC-22 only/
Methods of Manufacturing
By treating perchloroethylene with hydrogen fluoride
... Obtained by treating hexachloroethane with anhydrous fluoride in the presence of small amounts of antimony chloride under high pressure.
The most important commercial method for manufacturing CFCs and HCFCs is the successive replacement of chlorine by fluorine using hydrogen fluoride. The traditional, liquid-phase process uses antimony pentafluoride or a mixture of antimony trifluoride and chlorine as catalysts. Continuous vapor-phase processes that employ gaseous hydrogen fluoride in the presence of heterogenous chromium, iron, or fluorinated alumina catalysts also are widely used. Carbon tetrachloride, chloroform, and hexachloroethane (or tetrachloroethylene plus chlorine) are commonly used starting materials for one- and two-carbon chlorofluorocarbons. The extent of chlorine exchange can be controlled by varying the hydrogen fluoride concentration, the contact time, or the reaction temperature. /CFCs and HCFCs/
Formulations/Preparations
USEPA/OPP Pesticide Code 326200; Trade Names: Propellant 114 and Cryofluorane. /Former trade names/
Grades: Technical 95%.
General Manufacturing Information
Industrial Gas Manufacturing
Ethane, 1,2-dichloro-1,1,2,2-tetrafluoro-: ACTIVE
Ethane, dichlorotetrafluoro-: ACTIVE
SRP: The EPA has organized groups of chemicals into two classes according to their ozone-depletion potential. Class I controlled substances are those with an ozone-depletion potential of 0.2 or higher. Class II controlled substances are those with an ozone-potential of less than 0.2. Class II controlled substances are all hydrochlorofluorocarbons (HCFCs).
In the United States, "Class I" substances were subject to the first round of phaseout targets. Class I substances have an ozone depletion potential (ODP) of 0.2 or higher, and include halons, chlorofluorocarbons (CFCs), methyl chloroform, carbon tetrachloride, and methyl bromide. Section 604 of the Clean Air Act sets the phaseout targets for Class I substances. The ban on production and import of halons took effect on January 1, 1994. The ban on production and import of other Class I ODS /ozone-depleting substance/ - excluding methyl bromide - took effect on January 1, 1996.
The numbers in the "ODP1" column are from the Montreal Protocol. Some numbers have been updated as per amendments to the protocol. The "ODP2" column numbers are from the stratospheric ozone protection regulations at 40 CFR Part 82, as required by Title VI of the Clean Air Act amendments. These numbers include the amendments of July 18, 2003 (68 FR 42892). Data in the "ODP3" column come from WMO's /World Meteorological Organization/ Scientific Assessment of Ozone Depletion: 2006. ODP values listed are semi-empirical and can be found in Table 8-1 of the document. All GWP values represent global warming potential over a 100-year time horizon. The numbers in the "GWP1" column are from Table 1-6 of The Scientific Assessment of Ozone Depletion, 2002, a report of the World Meteorological Association's Global Ozone Research and Monitoring Project. The GWPs in the "GWP1" column that were not provided Table 1-6 of the 2002 report have not been updated since 1998 and are from The Scientific Assessment of Ozone Depletion, 1998. "GWP2" column numbers are from the Intergovernmental Panel on Climate Change Third Assessment Report: Climate Change 2001, and "GWP3" column numbers are from 40 CFR Part 82, stratospheric ozone protection regulations required by Title VI of the Clean Air Act amendments. The data in the "GWP4" column come from the IPCC Special Report on Safeguarding the Ozone Layer and the Global Climate System: Issues related to Hydrofluorocarbons and Perfluorocarbons ("SROC"). The values listed are for direct radiative forcing and can be found in Table 2.7 in the document. The numbers in the "GWP5" column come from the WMO's Scientific Assessment of Ozone Depletion: 2006. The values listed are for direct radiative forcing and can be found in Table 8-2 of the document.
Applications
General DescriptionColorless gas with a faint, ether-like odor at high concentrations. Boiling point 38°F. Shipped as a liquefied compressed gas.
Related reactions
Linked notes
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