HuagongsheHuagongshe Chemistry Print Report · For research reference only
4-Methyl-2-Pentanol
MIBC · METHYL ISOBUTYL CARBINOL · 4-Methylpentan-2-ol · MAOH · 4-methyl-2-pentano · 2-METHYL-4-PENTANOL · FEMA 3351 · METHYL AMYL ALCOHOL
Identifiers & Physical Properties
| CAS No. | 108-11-2 |
|---|---|
| Molecular formula | C6H14O |
| Average molar mass | 102.17 g/mol |
| Monoisotopic mass | 102.10446507 g/mol |
| SMILES | CC(C)CC(C)O |
| InChIKey | WVYWICLMDOOCFB-UHFFFAOYSA-N |
| PubChem CID | 7910 |
| ChEMBL | CHEMBL448896 |
| EC No. | 203-551-7 |
| DTXSID | DTXSID2026781 |
Chemical & Physical Properties
| XLogP | 1.7 |
|---|---|
| Topological polar surface area | 20.2 |
| Hydrogen bond donors | 1 |
| Hydrogen bond acceptors | 1 |
| Rotatable bonds | 2 |
| Heavy atoms | 7 |
| Formal charge | 0 |
| Complexity | 41.4 |
| Chemical classes | Flammable agents - 2nd degreeVolatile Organic Compound (VOC) |
| Solvents | Solvents -> Alcohols (<C12) |
| Fragrances | Fragrance Ingredient (4-Methyl-2-pentanol) -> IFRA transparency List |
| LogP (partition coefficient) | log Kow= 1.43 |
| Odor | Mild odor.Sharpmild and nonresidual. |
| Density | 0.807 at 68 °F (USCG, 1999) - Less dense than waterwill float0.8075 @ 20 °C/4 °C% IN SATURATED AIR: 0.46 @ 20 °CDENSITY OF SATURATED AIR: 1.01 (AIR= 1)Relative density (water = 1): 0.820.810.802 g/mL at 25 °C(lit.) |
| Flavoring agents | EU Flavoring substances |
| Color/Form | COLORLESS LIQColorless liquid. |
| Solubility | 2 % (NIOSH, 2024)SOL IN ALC & ETHER.MISCIBLE WITH MOST COMMON ORG SOLVENTS.Water solubility of 1.64X10+4 mg/kg (experimental).Solubility in water, g/100ml: 22%16.4g/l2 g/100 mL |
| Flash point | 106 °F (USCG, 1999)105 °F105 °F (OPEN CUP)41 °C107 °F |
| Boiling point | 269.2 °F at 760 mmHg (USCG, 1999)133 °C @ 760 MM HG132 °C271 °F134-135 °C(lit.) |
| Melting point | less than -130 °F (USCG, 1999)-90 °C |
| Vapor density | 3.5 (vs air) |
| Vapor pressure | 3.7 mm Hg ( 20 °C) |
| Refractive index | n20/D 1.415(lit.) |
| FLAVIS Number | 02.183 | 4-Methylpentan-2-ol |
| Storage conditions | Store below +30°C. |
| Physical state | Liquid |
| pKa (acidity coefficient) | 15.31±0.20(Predicted) |
| Color | Clear colorless |
| Odor type | pungent |
| Explosive limits | 1-5.5%(V) |
| Specific heat capacity | Cp(liquid): 2.67 J/(g·K), at 25℃ |
| BRN | 1098268 |
| Henry's law constant | 2.2×10-1 mol/(m3Pa) at 25℃, Brockbank (2013) |
| Exposure limits | ACGIH:TLV-TWA 20 ppmTLV-STEL 40 ppmOSHA:PEL-TWA 25 ppm (100 mg/m3)NIOSH:REL-TWA 25 ppmREL-STEL 40 ppm |
| Stability | Stable. Flammable. Incompatible with oxidizing agents, acids, acid chlorides. |
| Cosmetics Ingredients Functions | PERFUMING |
| InChI | 1S/C6H14O/c1-5(2)4-6(3)7/h5-7H,4H2,1-3H3 |
| InChIKey | WVYWICLMDOOCFB-UHFFFAOYSA-N |
| SMILES | CC(C)CC(C)O |
| LogP (partition coefficient) | 1.57 at 20℃ |
| CAS DataBase Reference | 108-11-2(CAS DataBase Reference) |
| EWG's Food Scores | 1 |
| FDA UNII | 8U34XJK0R0 |
| NIST Chemistry Reference | 2-Pentanol, 4-methyl-(108-11-2) |
| EPA Substance Registry System | 4-Methyl-2-pentanol (108-11-2) |
| UNSPSC Code | 41116107 |
| NACRES | NA.24 |
| GHS pictogram | GHS02,GHS07 |
| Signal word | Warning |
| GHS hazard statements | H303+H313-H316-H319-H335-H336-H226 |
| GHS precautionary statements | P501-P261-P240-P210-P233-P243-P241-P242-P271-P264-P280-P370+P378-P312-P337+P313-P305+P351+P338-P303+P361+P353-P332+P313-P304+P340+P312-P403+P233-P403+P235-P405 |
| Target organs | Respiratory system |
| Personal protective equipment (PPE) | Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter |
| Hazard symbols | Xi |
| Risk statements (R) | 10-37-36/37/38 |
| Safety statements (S) | 24/25-26 |
| Occupational exposure band (OEB) | A |
| Occupational exposure limit (OEL) | TWA: 25 ppm (100 mg/m3), STEL: 40 ppm (165 mg/m3) [skin] |
| UN transport number | UN 2053 |
| Water hazard class (WGK) | 1 |
| RTECS number | SA7350000 |
| Autoignition temperature | 305 °C |
| TSCA inventory status | TSCA listed |
| Hazard class | 3Eye Irrit. 2Flam. Liq. 3STOT SE 3 |
| Packing group | III |
| Customs code | 29051900 |
| Storage class | 3 - Flammable liquids |
| Hazardous substances data | 108-11-2(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 2590 mg/kg LD50 dermal Rabbit 2884 mg/kg |
| Immediately dangerous to life or health concentration | 400 ppm |
| REACH registrations | Active |
Safety & Regulations
| GHS classification | WarningH226: Flammable liquid and vapor [Warning Flammable liquids]P210, P233, P240, P241, P242, P243, P261, P271, P280, P303+P361+P353, P304+P340, P319, P370+P378, P403+P233, P403+P235, P405, and P501 (click each P-code to see the statement)H226 (100%): Flammable liquid and vapor [Warning Flammable liquids]P210, P233, P240, P241, P242, P243, P261, P264+P265, P271, P280, P303+P361+P353, P304+P340, P305+P351+P338, P319, P337+P317, P370+P378, P403+P233, P403+P235, P405, and P501 (click each P-code to see the statement) |
|---|---|
| Regulatory information | Chemical: 2-Pentanol, 4-methyl-Commission Regulation (EC) No 1565/2000 (Repealed by Com. Implementing Reg. (EU) No 872/2012)2-Pentanol, 4-methyl- is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of 2-Pentanol, 4-methyl- 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)Status: Active Update: 03-04-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/161892-Pentanol, 4-methyl-: HSNO Approval: HSR001193 Approved with controlsThe 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.) |
| Other safety information | IMAP assessments - 2-Pentanol, 4-methyl-: Environment tier I assessment |
| DOT label | Flammable Liquid |
| Fire hazards | Excerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious)]:· HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.Flammable. Above 41 °C explosive vapour/air mixtures may be formed. |
| Fire potential | MODERATE FIRE RISK. |
| Health hazards | Vapor irritates eyes and nosemay cause anesthesia. Prolonged contact with liquid causes irritation and cracking of skinalso irritates eyes. (USCG, 1999)· May cause toxic effects if inhaled or absorbed through skin. |
| Hazards summary | In acute animal studies, high concentrations induce narcosis and anesthesia. [ACGIH] Inhalation of high concentrations can cause CNS depressionA skin, eye, and respiratory tract irritant[ICSC] |
| DOT ID and guide | 2053 129 |
| Reactive group | Alcohols and Polyols |
| EC classification | Symbol: XiR: 10-37S: (2)-24/25 |
| UN classification | UN Hazard Class: 3UN Pack Group: III |
| OSHA Standards | Permissible Exposure Limit: Table Z-1 8-hr Time-Weighted Avg: 25 ppm (100 mg/cu m). Skin Designation.Vacated 1989 OSHA PEL TWA 25 ppm (100 mg/cu m)STEL 40 ppm (165 mg/cu m), skin designation, is still enforced in some states. |
| Fire fighting | Excerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious)]:Use water spray, powder, alcohol-resistant foam, carbon dioxide. |
| First aid measures | Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention .First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.Rinse mouth. Rest. 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.· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area. |
| First aid | Excerpt from NIOSH Pocket Guide for Methyl isobutyl carbinol:General First Aid:(General first aid procedures) |
| Safe storage | Fireproof if in building. Separated from strong oxidants. Cool. |
| Exposure control and personal protection | · Wear positive pressure self-contained breathing apparatus (SCBA).20.0 [ppm] |
| Fire fighting procedures | ALCOHOL FOAM. |
| Nonfire spill response | Excerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious)]: |
| Spillage disposal | Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Ventilation. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Do NOT wash away into sewer. |
| Preventive Measures | The worker should immediately wash the skin when it becomes contaminated.Work clothing that becomes wet or significantly contaminated should be removed and replaced.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. |
| Isolation and Evacuation | Excerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious)]:Immediate precautionary measure |
| Eye Prevention | Wear safety goggles. |
| Target organs | Eyes, skin, central nervous systemRespiratory system |
| Ecotoxicity values | LD50 Goldfish 360 mg/l/24 hr (modified ASTM D 1345) |
| Environmental fate | TERRESTRIAL FATE: If 4-methyl-2-pentanol is released to soil, it will be expected to exhibit high to very high mobility in soil(1,SRC) based upon estimated Koc of 143 and 21 estimated from log Kow(2) and water solubility(3), respectively, using a recommended regression equations(4,SRC). It may, therefore, leach through soil(SRC). It will not hydrolyze in moist soil(4), but it may be subject to volatilization from near surface soil based upon estimated rates for its volatilization from water(4-6). It may be subject to biodegradation in soil based upon the rapid biodegradation observed in laboratory aqueous screening tests using sewage and activated sludge inoculum(7,8).AQUATIC FATE: If 4-methyl-2-pentanol is released to water, it will not be expected to adsorb to sediment and suspended particulate matter or to bioconcentrate in aquatic organisms based upon estimated Koc and BCF, respectively, estimated(2,SRC) from the measured log Kow (1) and water solubility(3). It will not be expected to hydrolyze(2) or directly photolyze(4,SRC). It may be subject to biodegradation in natural waters based upon the rapid biodegradation observed in laboratory aqueous screening tests using sewage and activated sludge inoculum(5,6). It will be subject to volatilization from surface waters based upon half-lives of 23 hr for volatilization from a model river one meter deep flowing 1 m/sec with a wind velocity of 3 m/sec(2,SRC) and 10.6 days for volatilization from a model pond(7,SRC), respectively, estimated using a measured Henry's Law constant(8).ATMOSPHERIC FATE: If 4-methyl-2-pentanol is released to the atmosphere, it can be expected to exist mainly in the vapor-phase in the ambient atmosphere(1,SRC) based upon an experimental vapor pressure of 5.3 mm Hg at 25 °C(2,SRC). The measured rate constant for vapor-phase reaction with photochemically produced hydroxyl radicals of 7.1X10-12 cu cm/molecule-sec at 25 °C(3) corresponds to an atmospheric half-life of 2.3 days at an atmospheric concentration of 5X10+5 hydroxyl radicals per cu cm(SRC). 4-Methyl-2-pentanol has been rated a moderately reactive (Class III) compound(4) with respect to ozone formation as observed in smog chamber tests(5). 4-Methyl-2-pentanol will not be expected to directly photolyze in the atmosphere(6,SRC). |
| Food survey values | 4-Methyl-2-pentanol was qualitatively detected in the mixture of volatiles from mountain Beaufort cheese(1). |
| Adverse effects | Neurotoxin - Acute solvent syndrome |
| Exposure routes | The substance can be absorbed into the body by inhalation of its vapour and through the skin.inhalation, skin absorption, ingestion, skin and/or eye contact |
| Signs and Symptoms | Cough. Sore throat. Unconsciousness.Dry skin. Redness. Pain.irritation eyes, skinheadache, drowsinessdermatitisIn Animals: narcosis |
| Effluent Concentrations | 4-Methyl-2-pentanol was detected at a concn of 136 ppb in a sample of influent water from an unspecified municipal wastewater treatment plant(1). It was not indicated whether the compound was detected in final effluent from the plant(1). It was detected at a concn of 45 ppb in effluent samples taken from the Los Angeles County wastewater treatment plant discharge, Palos Verdes, CA between Nov 1980 and Aug 1981(2). A concn of 140 ppm was found in samples of leachate or samples of groundwater plume taken at an unspecified industrial landfill at an unspecified time(3). 4-Methyl-2-pentanol was qualitatively detected in 4 of 16 samples of concentrate derived from large volume (>400 gallons) samples of advanced treatment concentrate from 4 of 6 cities (Lake Tahoe, CA, Oct 1974Pomona, CA, 1975Orange County, CA, Feb 1976Blue Plains, Washington, DC, May 1975)(4). |
| Soil Adsorption/Mobility | Based upon an experimental log Kow of 1.43(1), a Koc of 143 has been estimated using a recommended regression equation(2). Based upon an experimental water solubility of 1.64X10+4 mg/kg(3), a Koc of 21 has been estimated using a recommended regression equation(2). Based upon these estimated Koc, 4-methyl-2-pentanol will be expected to exhibit high to very high mobility in soil(4). 4-Methyl-2-pentanol, therefore, may leach through soil to groundwater if it does not volatilize or biodegrade first(SRC). |
| Natural Pollution Sources | 4-Methyl-2-pentanol was qualitatively detected in the mixture of volatiles from mountain Beaufort cheese(1) which indicates that the compound may be formed naturally(SRC). |
| Atmospheric Concentrations | 4-Methyl-2-pentanol was qualitatively detected in ambient air samples taken Nov 20, 1979 at the BFI Landfill in New Jersey(1). It was detected in ambient air during an air pollution peak at concn ranging from 0.9 to 7.0 ppbdate and location not specified(2). |
| Human Toxicity Excerpts | THE LIQ MAY BE VERY SLIGHTLY IRRITATING TO SKIN & IS SLIGHTLY TOXIC WHEN INGESTED.... EYE IRRITATION WAS PRODUCED @ 50 PPM, ALTHOUGH ODOR WAS NOT OBJECTIONABLE @ THIS LEVEL. |
| Atmospheric standards | This action promulgates standards of performance for equipment leaks of Volatile Organic Compounds (VOC) in the Synthetic Organic Chemical Manufacturing Industry (SOCMI). The intended effect of these standards is to require all newly constructed, modified, and reconstructed SOCMI process units to use the best demonstrated system of continuous emission reduction for equipment leaks of VOC, considering costs, non air quality health and environmental impact and energy requirements. Methyl isobutyl carbinol is produced, as an intermediate or final product, by process units covered under this subpart. |
| Occupational exposure band (OEB) | A |
| Occupational exposure limit (OEL) | TWA: 25 ppm (100 mg/m3), STEL: 40 ppm (165 mg/m3) [skin] |
| Personal protective equipment (PPE) | Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter |
| Water hazard class (WGK) | 1 |
| Immediately dangerous to life or health concentration | 400 ppm |
| TSCA inventory status | TSCA listed |
| RTECS number | SA7350000 |
| UN transport number | UN 2053 |
| Customs code | 29051900 |
| Toxicity | LD50 orally in Rabbit: 2590 mg/kg LD50 dermal Rabbit 2884 mg/kg |
| Risk statements (R) | 10-37-36/37/38 |
| Signal word | Warning |
| GHS pictogram | GHS02,GHS07 |
| Hazard symbols | Xi |
| Safety statements (S) | 24/25-26 |
| Hazard class | 3Eye Irrit. 2Flam. Liq. 3STOT SE 3 |
| Storage class | 3 - Flammable liquids |
| Packing group | III |
| GHS hazard statements | H303+H313-H316-H319-H335-H336-H226 |
| REACH registrations | Active |
| Autoignition temperature | 305 °C |
| GHS precautionary statements | P501-P261-P240-P210-P233-P243-P241-P242-P271-P264-P280-P370+P378-P312-P337+P313-P305+P351+P338-P303+P361+P353-P332+P313-P304+P340+P312-P403+P233-P403+P235-P405 |
| Hazardous substances data | 108-11-2(Hazardous Substances Data) |
Applications & Uses
Description
MIBC is a colorless liquid with a mild odor.The odor threshold is 0.52 ppm. Molecularweight 5 102.20; Specific gravity (H2O:1) 5 0.81; Boilingpoint 5 132.8℃; Freezing/Melting point 5 2 90℃; Vaporpressure 5 3 mmHg at 20℃; Flash point = 41℃. Theexplosive limits are LEL 5 1.0%; UEL 5 5.5%. HazardIdentification (based on NFPA-704 M Rating System):Health 2, Flammability 2, Reactivity 0. Slightly soluble inwater; solubility 5 2%.
Uses
Solvent for dyestuffs, oils, gums, resins, waxes, nitrocellulose, and ethylcellulose; organic synthesis; froth flotation; brake fluids.
Uses
Solvent; organic syntheses; brake fluids
Uses
(^+)-4-Methyl-2-pentanol is employed as a solvent in organic synthesis, dyes and stains, natural resins and waxes. It is an additive to surface coatings. It finds applications in the manufacture of lube oil additives, zinc dialkyldithiophosphate, brake fluids. It is the precursor to some plasticizers and frother in mineral flotation. It acts as a corrosion inhibitor and also utilized in the characterization of volatile fraction of mono varietal wines and tar sand mining processes.
General Description
A clear colorless liquid. Flash point 120°F. Less dense than water. Vapors heavier than air.