2-Methyl-1-Butanol

Send Inquiry

Product Description

2-Methyl-1-butanol's cas code is 137-32-6

Product Detail

2-Methyl-1-butanol Basic information

Product Name:	2-Methyl-1-butanol
Synonyms:	2-methylbutanol-1;2-Methyl-n-butanol;2-methyln-butanol;3-methyl iso-butanol;Active primary amyl alcohol;activeprimaryamylalcohol;alcool2-methylbutylique;CH3CH2CH(CH3)CH2OH
CAS:	137-32-6
MF:	C5H12O
MW:	88.15
EINECS:	205-289-9
Product Categories:	Alcohols;C2 to C6;Oxygen Compounds;Alphabetical Listings;Flavors and Fragrances;M-N;Pharmaceutical Intermediates;alcohol Flavor
Mol File:	137-32-6.mol

2-Methyl-1-butanol Chemical Properties

Melting point	−70 °C(lit.)
alpha	-0.1～+0.1°(20℃/D)(neat)
Boiling point	130 °C mm Hg(lit.)
density	0.819 g/mL at 20 °C(lit.)
vapor density	3 (vs air)
vapor pressure	3 mm Hg ( 20 °C)
refractive index	n20/D 1.411
FEMA	3998 \| (+/-)-2-METHYL-1-BUTANOL
Fp	110 °F
storage temp.	Flammables area
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)
explosive limit	1.2-10.3%(V)
Water Solubility	3.6 g/100 mL (30 ºC)
Merck	14,6030
JECFA Number	1199
BRN	1718810
CAS DataBase Reference	137-32-6(CAS DataBase Reference)
NIST Chemistry Reference	1-Butanol, 2-methyl-(137-32-6)
EPA Substance Registry System	2-Methyl-1-butanol (137-32-6)

2-Methyl-1-butanol Safety Information

Hazard Codes	Xn
Risk Statements	10-20-37-66
Safety Statements	46-24/25
RIDADR	UN 1105 3/PG 3
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

2-Methyl-1-butanol Usage And Synthesis

Chemical Properties	clear colorless to very slighlty yellow liquid
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	(+/–)2-Methyl-1-butanol has a cooked, roasted aroma with fruity or alcoholic undernotes.
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.
Preparation	Prepared from hydroboration of 2-methyl-1-butene. (–)2-Methyl-1-butanol is isolated by fractional distillation of fusel oil
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.
Aroma threshold values	Odor threshold in air: detection at 0.14 mg/m3; recognition at 0.83 to 1.7 mg/m3.
Hazard	Moderate fire and explosion risk. Toxic by ingestion, inhalation, and skin absorption.
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.
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.