2-Methyl-3-buten-2-ol

Synonym(s):1,1-Dimethylallyl alcohol;2-Methyl-3-buten-2-ol;3-Hydroxy-3-methyl-1-butene;Dimethyl vinyl carbinol

CAS NO.：115-18-4
Empirical Formula: C5H10O
Molecular Weight: 86.13
MDL number: MFCD00004470
EINECS: 204-068-4
SAFETY DATA SHEET (SDS)
Update Date: 2024-10-25 16:21:11

What is 2-Methyl-3-buten-2-ol?

Chemical properties

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

The Uses of 2-Methyl-3-buten-2-ol

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.

The Uses of 2-Methyl-3-buten-2-ol

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.

What are the applications of 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.

Properties of 2-Methyl-3-buten-2-ol

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
Odor	at 10.00 % in dipropylene glycol. herbal earthy oily
PH	9-10 (100g/l, H2O, 20℃)
explosive limit	1.5-9.4%(V)
BRN	1698263
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 information for 2-Methyl-3-buten-2-ol

Signal word	Danger
Pictogram(s)	Flame Flammables GHS02 Exclamation Mark Irritant GHS07
GHS Hazard Statements	H225:Flammable liquids H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation
Precautionary Statement Codes	P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.