2-Methyl-3-buten-2-ol Property

Melting point:

-43 °C

Boiling point:

98-99 °C (lit.)

Density 

0.824 g/mL at 25 °C (lit.)

vapor pressure 

51 mm Hg ( 25 °C)

refractive index 

n20/D 1.416(lit.)

Flash point:

56 °F

storage temp. 

Store below +30°C.

form 

Liquid

pka

14.56±0.29(Predicted)

color 

Clear colorless to very slightly yellow

PH

9-10 (100g/l, H2O, 20℃)

Odor

at 10.00 % in dipropylene glycol. herbal earthy oily

Odor Type

herbal

explosive limit

1.5-9.4%(V)

BRN 

1698263

LogP

0.66 at 25℃

CAS DataBase Reference

115-18-4(CAS DataBase Reference)

NIST Chemistry Reference

3-Buten-2-ol, 2-methyl-(115-18-4)

EPA Substance Registry System

2-Methyl-3-buten-2-ol (115-18-4)

Safety

Hazard Codes 

F,Xn,F++

Risk Statements 

11-22-36

Safety Statements 

16-26-36

RIDADR 

UN 1987 3/PG 2

WGK Germany 

1

RTECS 

EM9472000

Autoignition Temperature

380 °C

TSCA 

Yes

HazardClass 

3

PackingGroup 

II

HS Code 

29052990

Toxicity

LD50 orally in Rabbit: 1800 mg/kg

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H225Highly Flammable liquid and vapour

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

2-Methyl-3-buten-2-ol Chemical Properties,Usage,Production

Chemical Properties

Clear colourless to very slightly yellow liquid.
Powerful, oily-herbaceous, somewhat earthy, fungus-like odor of considerable radiance. Poor tenacity.

Uses

2-Methyl-3-buten-2-ol was used to study the kinetics of the gas-phase reaction of OH radicals with 3-methyl-2-butenal.

Uses

2-Methyl-3-buten-2-ol may be used as an analytical reference standard for the determination of the analyte in Humulus Lupulus L. (Hop) and pine-mushroom extracts by chromatography techniques.

Definition

ChEBI: 3-hydroxy-3-methylbut-1-ene is a tertiary alcohol that is 3-methylbut-1-ene carrying a hydroxy substituent at position 3. It has a role as a fragrance, a pheromone, a plant metabolite and an animal metabolite. It is a tertiary alcohol and an olefinic compound. It derives from a hydride of a 3-methylbut-1-ene.

Application

This unsaturated alcohol has found a little use in perfume compositions, mainly in the reconstruction of Lavender and Lavandin oils, etc.
It is occasionally used as a powerful additive in soap and detergent perfumes, but it needs skilful blending and firm fixation in order to control its odor to an acceptable level.

Production Methods

2-Methyl-3-buten-2-ol can be produced from Vinyl magnesium bromide and Acetone by Grignard reaction.

General Description

Colorless liquid.

Air & Water Reactions

Slightly soluble in water.

Reactivity Profile

An unsaturated aliphatic/alcohol. The unsaturated aliphatic hydrocarbons are generally much more reactive than the alkanes, which are saturated aliphatic hydrocarbons. Strong oxidizers may react vigorously with them. Reducing agents can react exothermically to release gaseous hydrogen. Flammable and/or toxic gases are generated by the combination of alcohols with alkali metals, nitrides, and strong reducing agents. They react with oxoacids and carboxylic acids to form esters plus water. Oxidizing agents convert them to aldehydes or ketones. Alcohols exhibit both weak acid and weak base behavior. They may initiate the polymerization of isocyanates and epoxides.

Health Hazard

Harmful if inhaled or swallowed. Material is irritating to mucous membrane and upper respiratory tract.

Fire Hazard

Special Hazards of Combustion Products: Vapor may travel considerable distance to a source of ignition and flash back.