3,7-DIMETHYL-1-OCTANOL Property

Melting point:

-1.53°C (estimate)

Boiling point:

98-99 °C/9 mmHg (lit.)

Density 

0.828 g/mL at 20 °C (lit.)

vapor density 

5.4 (vs air)

vapor pressure 

<0.01 mm Hg ( 20 °C)

refractive index 

n20/D 1.436(lit.)

FEMA 

2391 | 3,7-DIMETHYL-1-OCTANOL

Flash point:

203 °F

storage temp. 

Sealed in dry,Room Temperature

solubility 

Insoluble in water

form 

Liquid

pka

15.13±0.10(Predicted)

color 

Clear colorless

Odor

at 100.00 %. waxy soapy aldehydic leathery musty citrus green

Odor Type

floral

Water Solubility 

64mg/L at 20℃

JECFA Number

272

BRN 

1719638

LogP

3.9 at 35℃

CAS DataBase Reference

106-21-8(CAS DataBase Reference)

EPA Substance Registry System

1-Octanol, 3,7-dimethyl- (106-21-8)

Safety

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

23-26-36

RIDADR 

UN 3082 9 / PGIII

WGK Germany 

1

RTECS 

RH0900000

HS Code 

29051990

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H411Toxic to aquatic life with long lasting effects

Precautionary statements

P273Avoid release to the environment.

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.

3,7-DIMETHYL-1-OCTANOL Chemical Properties,Usage,Production

Chemical Properties

Tetrahydrogeraniol has been identified in citrus oils and is a colorless liquid with a waxy, rose-petal-like odor. It is prepared by hydrogenation of geraniol or citronellol in the presence of a nickel catalyst and is a by-product in the synthesis of citronellol from geraniol or nerol. Because of its stability, it is often used to perfume household products.

Chemical Properties

3,7-Dimethyl-1-octanol has a sweet, rosy odor and bitter tas

Chemical Properties

Clear colorless liquid

Uses

3,7-Dimethyl-1-octanol was employed as medium supplement in the anaerobic enrichment cultures of Pseudomonas citronellolis.2

Preparation

Usually prepared by hydrogenation of geraniol, citronellol or citronellal.

Production Methods

3,7-Dimethyl-1-octanol is commercially produced by the reduction of geraniol or by the reduction of citronellol, citronellal, or citral. It is used in fragrances and in foods.

Aroma threshold values

Aroma characteristics at 1%: fresh fatty, waxy, soapy, aldehydic citrus with lemon, lime and orange nuances. It has rosy and green woody notes

Taste threshold values

Taste characteristics at 1 to 10 ppm: fatty, waxy, soapy with floral rosy and fresh citrus-woody nuances. Natural occurrence: Reported found in lemon, lemon peel oil and thyme; corresponds to the dl-form of dihydro-citronellol.

General Description

3,7-Dimethyl-1-octanol is an fragrance ingredient and its toxicologic and dermatologic review as a fragrance ingredient was reported.

Flammability and Explosibility

Non flammable

Safety Profile

Moderately toxic by skin contact. A skin irritant. When heated to decomposition it emits acrid smoke and irritating fumes.