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2-Methyl-1-butanol

CAS No.137-32-6
Chemical Name:2-Methyl-1-butanol
CBNumber:CB5697005
Molecular Formula:C5H12O
Formula Weight:88.15
MOL File:137-32-6.mol

2-Methyl-1-butanol Property

Melting point −70 °C(lit.)
Boiling point 130 °C mm Hg(lit.)
alpha -0.1～+0.1°(20℃/D)(neat)
Density 0.819 g/mL at 20 °C(lit.)
vapor density 3 (vs air)
vapor pressure 3 mm Hg ( 20 °C)
FEMA 3998 | (+/-)-2-METHYL-1-BUTANOL
refractive index n20/D 1.411
Flash point 110 °F
storage temp. Store below +30°C.
solubility water: slightly soluble3.6g/a00g at 30°C
form Liquid
pka 15.24±0.10(Predicted)
color Clear colorless to very slightly yellow
PH 7 (H2O)
Odor at 100.00 %. ethereal fusel alcoholic fatty greasy winey whiskey leathery cocoa
Odor Type ethereal
biological source synthetic
explosive limit 1.2-10.3%(V)
Water Solubility 3.6 g/100 mL (30 ºC)
Merck 14,6030
JECFA Number 1199
BRN 1718810
LogP 1.22
Surface tension 24.09mN/m at 293.15K
Substances Added to Food (formerly EAFUS) 2-METHYL-1-BUTANOL
CAS DataBase Reference 137-32-6(CAS DataBase Reference)
FDA UNII 7VTJ239ASU
NIST Chemistry Reference 1-Butanol, 2-methyl-(137-32-6)
EPA Substance Registry System 2-Methyl-1-butanol (137-32-6)
UNSPSC Code 85151701
NACRES NA.24

Safety

Hazard Codes :Xn
Risk Statements :10-20-37-66
Safety Statements :46-24/25
RIDADR :UN 1105 3/PG 3
OEB :A
OEL :TWA: 100.0 ppm; 360.0 mg/m3, STEL: 125.0 ppm; 450.0 mg/m3
WGK Germany :3
RTECS :EL5250000
Autoignition Temperature :725 °F
TSCA :Yes
HazardClass :3
PackingGroup :III
HS Code :29051500
Hazardous Substances Data :137-32-6(Hazardous Substances Data)
Toxicity :LD50 orally in Rabbit: 4170 mg/kg LD50 dermal Rabbit 2900 mg/kg

NFPA 704:

	2
		0

Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal wordDanger
Hazard statements H226-H315-H318-H332-H335
Precautionary statements P210-P233-P280-P303+P361+P353-P304+P340+P312-P305+P351+P338

2-Methyl-1-butanol Price More Price(19)

Brand: Sigma-Aldrich(India)
Product number: W399817
Product name : 2-Methyl-1-butanol
Purity: natural, 99%, FG
Packaging: 1SAMPLE-K
Price: ₹5196
Updated: 2022/06/14
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Brand: Sigma-Aldrich(India)
Product number: W399817
Product name : 2-Methyl-1-butanol
Purity: natural, 99%, FG
Packaging: 100G
Price: ₹8789.9
Updated: 2022/06/14
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Brand: Sigma-Aldrich(India)
Product number: W399817
Product name : 2-Methyl-1-butanol
Purity: natural, 99%, FG
Packaging: 1KG
Price: ₹32161.08
Updated: 2022/06/14
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Brand: Sigma-Aldrich(India)
Product number: W399809
Product name : 2-Methyl-1-butanol
Purity: ≥99%, FG
Packaging: 1SAMPLE-K
Price: ₹5141.88
Updated: 2022/06/14
Buy: Buy

Brand: Sigma-Aldrich(India)
Product number: W399809
Product name : 2-Methyl-1-butanol
Purity: ≥99%, FG
Packaging: 1KG
Price: ₹7826.48
Updated: 2022/06/14
Buy: Buy

2-Methyl-1-butanol Chemical Properties,Usage,Production

Chemical Properties Amyl alcohols (pentanols) have eight isomers. All are flammable, colorless liquids, except the isomer 2,2- dimethyl-1-propanol, which is a crystalline solid.
Chemical Properties clear colorless to very slighlty yellow liquid
Chemical Properties (+/–)2-Methyl-1-butanol has a cooked, roasted aroma with fruity or alcoholic undernotes.
Occurrence Reportedly present in over 120 natural food products, including apple, apricot, banana, orange, bilberry, black currant, cranberry, papaya, strawberry, tomato and alcoholic beverages
Uses 2-Methyl-1-butanol is a whiskey-scented amyl alcohol that is naturally present in all fruits wine and beer. 2-Methyl-1-butanol is commercially used as a solvent in paints and oils and as flavorant in many processed foods. 2-Methyl-1-butanol has a characteristic redolence, which is thought to account for its active properties as an attractant for hornets and certain wasps, such as yellowjackets, in traps. As a biochemical active ingredient, it has a non-toxic mode of action – targeted pests are killed through physical entrapment.
Uses 2-Methyl-1-butanol is a volatile metabolite produced by a number of different plant species. Used as a solvent in organic synthesis (introduction of active amyl group), in lubricants, plasticizers, additives for oils & paints. It is also employed as a perfuming agent.
Uses Solvent, organic synthesis (introduction of active amyl group), lubricants, plasticizers, additives for oils and paints.
Definition The active alcohol from fusel oil. The synthetic product is a racemic mixture of both dextroand levorotatory compounds and therefore not optically active.
Production Methods 2-methyl-1-butanol are refined from ethanol production as fusel oil. Isoamyl alcohols are used as solvents for oils, fats, resins, and waxes; in the plastics industry in spinning polyacrylonitrile; and in manufacturing lacquers, chemicals, and pharmaceuticals.
Preparation Prepared from hydroboration of 2-methyl-1-butene. (–)2-Methyl-1-butanol is isolated by fractional distillation of fusel oil
Aroma threshold values Odor threshold in air: detection at 0.14 mg/m3; recognition at 0.83 to 1.7 mg/m3.
General Description S-(-)-2-Methyl-1-butanol is a precursor for the synthesis of chiral liquid crystals. It is a potential new-biofuel.
Hazard Moderate fire and explosion risk. Toxic by ingestion, inhalation, and skin absorption.
Flammability and Explosibility Flammable
Safety Profile Moderately toxic by skin contact and intraperitoneal routes. Mddly toxic by ingestion. An eye, skin, and mucous membrane irritant. Can cause deafness, delirium, headache, nausea, and vomiting. Flammable liquid when exposed to heat, flame, or oxidizers. Explosive in the form of vapor when exposed to heat or flame. Incompatible with H2S3. To fight fire, use alcohol foam, spray, mist, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. See also ALCOHOLS.
Potential Exposure (n-isomer); Suspected reprotoxic hazard, Primary irritant (w/o allergic reaction), (iso-, primary): Possible risk of forming tumors, Primary irritant (w/o allergic reaction), (sec-, active primary-, and other isomers) Primary irritant (w/o allergic reaction). Used as a solvent in organic synthesis and synthetic flavoring, pharmaceuticals, corrosion inhibitors; making plastics and other chemicals; as a flotation agent. The (n-isomer) is used in preparation of oil additives, plasticizers, synthetic lubricants, and as a solvent.
Shipping UN2811 Pentanols, Hazard Class: 3; Labels: 3- Flammable liquid. UN1987 Alcohols, n.o.s., Hazard Class: 3; Labels: 3-Flammable liquid.
Purification Methods Reflux the butanol with CaO, distil, reflux with magnesium and again fractionally distil it. A small sample of highly purified material is obtained by fractional crystallisation after conversion into a suitable ester such as the trinitrophthalate or the 3-nitrophthalate. The latter is converted to the cinchonine salt in acetone and recrystallised from CHCl3 by adding pentane. The salt is saponified, extracted with ether, and fractionally distilled. [Terry et al. J Chem Eng Data 5 403 1960, Beilstein 1 IV 1666.]
Incompatibilities Forms an explosive mixture with air. Contact with strong oxidizers and hydrogen trisulfide may cause fire and explosions. Incompatible with strong acids. Violent reaction with alkaline earth metals forming hydrogen, a flammable gas.
Toxics Screening Level The initial threshold screening level (ITSL) for 2-methyl-1-butanol is being set at 13 μg/m3 with annual averaging.
Waste Disposal Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.