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Triethylboran
TRIETHYLBORON · (C2H5)3B · Borethyl · Triethylbo · Boron ethyl · TRIETHYLBORANE · BORON TRIETHYL · triethyl-boran
Identifikatoren & physikalische Daten
| CAS No. | 97-94-9 |
|---|---|
| Summenformel | C6H15B |
| Durchschnittliche Molmasse | 98 g/mol |
| Monoisotopische Masse | 98,12668088 g/mol |
| SMILES | CCB(CC)CC |
| InChIKey | LALRXNPLTWZJIJ-UHFFFAOYSA-N |
| PubChem CID | 7357 |
| EC No. | 202-620-9 |
| DTXSID | DTXSID2052653 |
| Lokaler Name | Triethylboran |
Chemische & physikalische Eigenschaften
| Polarare Oberfläche (TPSA) | 0 |
|---|---|
| H-Brücken-Donoren | 0 |
| H-Brücken-Akzeptoren | 0 |
| Frei drehbare Bindungen | 3 |
| Schwere Atome | 7 |
| Formalladung | 0 |
| Komplexität | 25,7 |
| Stoffklassen | Metals -> Metalloid Compounds (Boron) |
| Dichte | 0.70 g/cu cm at 23 °C0.865 g/mL at 25 °C |
| Color/Form | Colorless liquidColorless fuming liquid |
| Löslichkeit | Soluble in alcohol, etherMiscible with most organic solventsimmiscible with waterDecomposes |
| Flammpunkt | -33 °F (-36 dec C) (open cup) /table/1 °F |
| Siedepunkt | 95 °C95°C |
| Decomposition | When heated to decomposition or upon contact with air it emits toxic acrid smoke and irritating fumes. |
| Schmelzpunkt | -93 °C-92°C |
| Dampfdruck | 53.0 [mmHg]53 mm Hg at 25 °C /est/67hPa at 25℃ |
| Brechungsindex | Index of refraction: 1.3971n20/D 1.380 |
| Heat of Combustion | 20,000 BTU/LB |
| Physical Description | Colorless liquid[Merck Index] |
| Lagerbedingungen | 0-6°C |
| Aggregatzustand | Liquid |
| Farbe | Colorless to light amber |
| Spezifische Wärmekapazität | Cp(liquid): 2.46 J/(g·K), at 25℃ |
| Merck | 14,9668 |
| BRN | 1731462 |
| InChI | 1S/C6H15B/c1-4-7(5-2)6-3/h4-6H2,1-3H3 |
| InChIKey | LALRXNPLTWZJIJ-UHFFFAOYSA-N |
| SMILES | CCB(CC)CC |
| CAS Datenbank | 97-94-9(CAS DataBase Reference) |
| NIST chemische Informationen | Borane, triethyl-(97-94-9) |
| EPA chemische Informationen | Borane, triethyl- (97-94-9) |
Sicherheit & Vorschriften
| GHS-Einstufung | DangerH225 (16.4%): Highly Flammable liquid and vapor [Danger Flammable liquids]P203, P210, P222, P231, P233, P240, P241, P242, P243, P260, P264, P264+P265, P270, P271, P280, P284, P301+P316, P301+P330+P331, P302+P335+P334, P302+P361+P354, P303+P361+P353, P304+P340, P305+P354+P338, P316, P317, P318, P320, P321, P330, P363, P370+P378, P403+P233, P403+P235, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 256 reports by companies from 10 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.H225: Highly Flammable liquid and vapor [Danger Flammable liquids] |
|---|---|
| Regulatorische Informationen | Chemical: Borane, triethyl-Status: Active Update: 19-08-2021 https://echa.europa.eu/registration-dossier/-/registered-dossier/19345Borane, triethyl-: HSNO Approval: HSR001432 Approved with controls |
| Brandpotenzial | Spontaneously flammable in air |
| Gefahrenübersicht | Highly irritatingAnimals exposed to high inhalation dose have lung irritation and convulsionsOral LD50 (rat) = 235 mg/kg. . . would decompose before occupational exposure can occur. [HSDB] Spontaneously flammable[Merck Index] Corrosive to skin and eyes[eChemPortal: ERMA] The trialkylborons are not soluble nor reactive in waterToxic to rats at nonpyrophoric concentrations[Ullmann] PyrophoricA corrosive substance that can cause injury to the skin, eyes, and respiratory tract[MSDSonline] See Tri-n-butylborane. |
| RCRA-Anforderungen | [40 CFR 261.32U.S. National Archives and Records Administration's Electronic Code of Federal Regulations. Available from: http://www.gpoaccess.gov/ecfr as of December 15, 2004)] D003A solid waste containing triethylboron may become characterized as a hazardous waste when subjected to testing for reactivity as stipulated in 40 CFR 261.23, and if so characterized, must be managed as a hazardous waste. |
| EPA Hazardous Waste Number | D003A waste containing triethylboron may (or may not) be characterized a hazardous waste following testing for the reactivity characteristics as prescribed by the Resource Conservation and Recovery Act (RCRA) regulations. |
| NFPA Hazard Classification | 1 - Materials that, under emergency conditions, can cause significant irritation.3 - Liquids and solids that can be ignited under almost all ambient temperature conditions. Materials produce hazardous atmospheres with air under almost all ambient temperatures or, though unaffected by ambient temperatures, are readily ignited under almost all conditions.2 - Materials that readily undergo violent chemical changes at elevated temperatures and pressures.W - No water: Materials that react violently or explosively with water. |
| Hazard Classes and Categories | Flam. Liq. 2 (16.4%)Flammable liquids - Category 2 |
| Landesrichtlinien für Trinkwasser | (CA) CALIFORNIA 1000 ug/L /Boron/(NH) NEW HAMPSHIRE 630 ug/L /Boron/(ME) MAINE 1,400 ug/L /Boron/(MN) MINNESOTA 1,000 ug/L /Boron/(WI) WISCONSIN 960 ug/L /Boron/ |
| Bundesrichtlinien für Trinkwasser | EPA 600 ug/L /Boron/ |
| Shipping Name/ Number DOT/UN/NA/IMO | [40 CFR 261.32U.S. National Archives and Records Administration's Electronic Code of Federal Regulations. Available from: http://www.gpoaccess.gov/ecfr as of December 15, 2004)] D003A solid waste containing triethylboron may become characterized as a hazardous waste when subjected to testing for reactivity as stipulated in 40 CFR 261.23, and if so characterized, must be managed as a hazardous waste. |
| Explosive Limits and Potential | ... May ... explode in moist air ... /Boranes/ |
| Skin, Eye, and Respiratory Irritations | ... Strong irritant... May produce irritation of the nasal mucous membranes, the respiratory tract, and eyes. /Boron compounds/ |
| Brandbekämpfungsverfahren | Do NOT use halogenated extinguishing agents. |
| Entsorgungsverfahren | SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational exposure 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 qualitypotential migration in soil or watereffects on animal, aquatic, and plant lifeand conformance with environmental and public health regulations. |
| Preventive Measures | SRP: The scientific literature for the use of contact lenses in industry is conflicting. The benefit or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place.All equipment should be fully enclosed and carefully designed to eliminate any likelihood of autoignition. All equipment must be purged before opening. All possible sources of ignition should be eliminated and processes in which boron hydrides are heated must be minutely controlled. Automatic leak detectors with visual and acoustic warning signals should be fitted. Where possible, processes should be automated or operated by remote control. /Boron hydrides/All containers should be thoroughly flushed before maintenance work is carried out on them and, in event of leakage, only persons with adequate personal protective equipment should be allowed in vicinity of containers. /Boranes/ |
| Other Standards Regulations and Guidelines | Limit for livestock is 5 ug/ml boron in water. /Boron/0.5 mg/l maximum (USSR) /Boron in drinking water/ |
| Umweltverhalten | TERRESTRIAL FATE: Triethylboron is spontaneously flammable in air and reacts with water(1). Triethylboron should have a very short existence in the environment(SRC).AQUATIC FATE: Triethylboron is spontaneously flammable in air and reacts with water(1). Triethylboron should have a very short existence in the environment(SRC).ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), triethylboron, which has an estimated vapor pressure of 53 mm Hg at 25 °C(SRC), determined from a fragment constant method(2), is expected to exist solely as a vapor in the ambient atmosphere. Triethylboron is spontaneously flammable in air and reacts with water(3). Triethylboron should have a very short existence in the environment(SRC). |
| Unerwünschte Wirkungen | Neurotoxin - Other CNS neurotoxin |
| Medical Surveillance | No specific considerations are needed for boric acid or borates except for general health and liver and kidney function. /Boric acid and borates/ |
| Soil Adsorption/Mobility | Triethylboron is spontaneously flammable in air and reacts with water(1). Adsorption to soil or suspended particles in water is not considered an important environmental fate for triethylboron(SRC). |
| Artificial Pollution Sources | Triethylboron's production and use as an igniter or fuel for jet and rocket engines, fuel additive, olefin polymerization catalyst, and as a chemical intermediate(1) may result in its release to the environment through various waste streams(SRC). |
| Environmental Biodegradation | Triethylboron is spontaneously flammable in air and reacts with water(1). Biodegradation in not considered an important environmental fate for triethylboron(SRC). |
| Environmental Bioconcentration | Triethylboron is spontaneously flammable in air and reacts with water(1). Bioconcentration is not considered an important environmental fate for triethylboron(SRC). |
| Volatilization from Water/Soil | Triethylboron is spontaneously flammable in air and reacts with water(1). Volatilization from water or soil is not considered an important environmental fate for triethylboron(SRC). |
| Non-Human Toxicity Excerpts | /LABORATORY ANIMALS: Acute Exposure/ Animal /inhalation/ experiments show that the vapor ... causes pulmonary irritation and convulsions. |
| Environmental Abiotic Degradation | Triethylboron is spontaneously flammable in air and reacts with water(1). These reactions should be the dominant fate processes for triethylboron(SRC). |
| Probable Routes of Human Exposure | Occupational exposure to triethylboron may occur through inhalation and dermal contact with this compound at workplaces where triethylboron is produced or used. When used commercially, triethylboron would need to be handled in an inert atmosphere. The high reactivity, rapid decomposition, and commercial handling techniques suggest that triethylboron would decompose before occupational exposure can occur, should small amounts be released. Exposure to the general population is not be expected because of the spontaneous decomposition of triethylboron on contact with oxygen or moisture. (SRC) |
| Environmental Fate/Exposure Summary | Triethylboron's production and use as an igniter or fuel for jet and rocket engines, fuel additive, olefin polymerization catalyst, and as a chemical intermediate may result in its release to the environment through various waste streams. If released to air, an estimated vapor pressure of 53 mm Hg at 25 °C indicates triethylboron will exist solely as a vapor in the ambient atmosphere. Triethylboron is spontaneously flammable in air and reacts with water. These rapid reactions should dominate over all other environmental fate processes, and triethylboron should have a very short existence in the environment. Occupational exposure to triethylboron may occur through inhalation and dermal contact with this compound at workplaces where triethylboron is produced or used. When used commercially, triethylboron would need to be handled in an inert atmosphere. The high reactivity, rapid decomposition, and commercial handling techniques suggest that triethylboron would decompose before occupational exposure can occur, should small amounts be released. Exposure to the general population is not be expected because of the spontaneous decomposition of triethylboron on contact with oxygen or moisture. (SRC) |
| F | 2-10 |
| Wassergefährdungsklasse (WGK) | 2 |
| TSCA-Inventar-Status | TSCA listed |
| UN-Transportnummer | UN 3399 4.3/PG 2 |
| Zollcode | 29319090 |
| RTECS-Nr. | ED2100000 |
| R-Sätze (R) | 12-17-19-22-34-66-67-65-62-51/53-48/20-11-40-37 |
| Toxizität | LD50 orl-rat: 235 mg/kg 14KTAK -,693,64 |
| Gefahrensymbole | F+,C,N,F |
| Sicherheitshinweise (S) | 7-9-16-23-26-29-33-36/37/39-43-45-61-43A-62 |
| Gefahrenklasse | 3Aquatic Chronic 2Asp. Tox. 1Eye Dam. 1Flam. Liq. 2Repr. 2Skin Corr. 1ASTOT RE 1 InhalationSTOT SE 3 |
| Verpackungsgruppe | II |
| Lagerklasse | 4.3 - Hazardous materials which set free flammable gases upon contact with water |
| Gefahrstoffdaten | 97-94-9(Hazardous Substances Data) |
Anwendungen & Verwendung
Verwenden
Triethylborane reacted with 8-hydroxyquinoline to synthesize three 8--hydroxyquinolato (q) boron compounds B(C2H5)2q (1), BPh2q (2), and B(2-naph)2q (3).
Herstellung & Synthese
synthetische
Triethylborane is prepared by reacting triethylaluminium with boron halides or by reacting diborane with ethylene: (C₂H₅)₃Al + BCl₃ → (C₂H₅)₃B + AlCl₃B₂H₆ + CH₂=CH₂ → (C₂H₅)₃B