3,7-DIMETHYL-1-OCTANOL

Product Name:

3,7-DIMETHYL-1-OCTANOL

Synonyms:

DIMETHYLOCTANOL;DIHYDROCITRONENELLOL;FEMA 2391;3,7-DIMETHYL OCTANOL;3,7-DIMETHYL-1-OCTANOL;TETRAHYDROGERANIOL;PELARGOL;3 7-DIMETHYL-1-OCTANOL 98+% FCC

CAS:

106-21-8

MF:

C10H22O

MW:

158.28

EINECS:

203-374-5

Mol File:

106-21-8.mol

Melting point 

-1.53°C (estimate)

Boiling point 

98-99 °C9 mm Hg(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

Fp 

203 °F

form 

Liquid

pka

15.13±0.10(Predicted)

color 

Clear colorless

JECFA Number

272

BRN 

1719638

CAS DataBase Reference

106-21-8(CAS DataBase Reference)

EPA Substance Registry System

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

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

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

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.

Safety Profile

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

Raw materials

Citronellol-->Geraniol