OCIMENE

Synonym(s):3,7-Dimethyl-1,3,6-octatrien;3,7-Dimethyl-1,3,6-octatriene

CAS NO.：13877-91-3
Empirical Formula: C10H16
Molecular Weight: 136.23
MDL number: MFCD00026437
EINECS: 237-641-2
SAFETY DATA SHEET (SDS)
Update Date: 2026-08-20 20:20:01

What is OCIMENE?

Description

β-Ocimene is a monoterpene that has been found in a variety of plants and is a volatile compound involved in plant-plant signaling and plant defense against pests. It is emitted by tea (C. sinensis) plants in response to a jasmonic acid combined with mechanical damage (JAMD) model of herbivore attack. β-Ocimene reduces the number of winged aphids (M. persicae) that settle on Chinese cabbage and the feeding time and number of nymphs produced by aphids on leaves. The aphid endoparasitoid A. gifuensis demonstrates a preference for β-ocimene-treated Chinese cabbage over control plants in a wind tube two-choice test. β-Ocimene (100-1,000 ppm) also has antioxidant activity in a thiobarbituric acid reactive substances (TBARS) assay.

Chemical properties

3,7-Dimethyl-1,3,6-octatrine has a warm herbaceous odor.

Occurrence

Reported found in black currants, currant leaves, mentha pulegium oil, origanum oil, passion fruit, citrus peel oils, guava, strawberry jam, cinnamon bark, Thymus vulgaris, hop oil, tea, soybean, parsnips, tarragon, origanum, Ocimum basilicum, curcuma, ouzo and pimento berry

The Uses of OCIMENE

Deuterium labelled analog of β-Ocimene, which is a monoterpenes found naturally in a variety of fruits and plants. It is also a product of linalool (L465950) reaction in the presence of Amberlyst-15 resin. The mixture of this compound, as well as its pure form, are oils with a pleasant odors, and thus can be used in fragrance, and perfumery industry.

What are the applications of Application

Ocimene is a monoterpene

Definition

ChEBI: (E)-beta-ocimene is a beta-ocimene that consists of octa-1,3,6-triene bearing two methyl substituents at positions 3 and 7 (the 3E-isomer). It has a role as a plant metabolite.

Preparation

1) By thermal rearrangement of Pinene (type of pyrolysis).
2) Ocimene can also be prepared from Lina- lool.

Taste threshold values

Taste characteristics at 40 ppm: green, tropical, woody with floral and vegetable nuances.

Flammability and Explosibility

Flammable

Synthesis

One-step synthesis of trans-beta-ocimene

Properties of OCIMENE

Melting point:	-27.17°C (estimate)
Boiling point:	65-66 °C/13 mmHg
Density	0.818 g/mL at 20 °C(lit.)
vapor pressure	2.207hPa at 24℃
refractive index	n20/D 1.485
FEMA	3539 \| 3,7-DIMETHYL-1,3,6-OCTATRIENE
Flash point:	38 °C
storage temp.	2-8°C
solubility	Chloroform: Slightly Soluble; Methanol: Slightly Soluble
form	An oil
Specific Gravity	0.80
color	Colorless to light yellow
Odor	at 100.00 %. citrus tropical green terpene woody green
Water Solubility	14.5mg/L at 24℃
JECFA Number	1338
BRN	1736172
EPA Substance Registry System	1,3,6-Octatriene, 3,7-dimethyl- (13877-91-3)

Safety information for OCIMENE

Signal word	Danger
Pictogram(s)	Flame Flammables GHS02 Exclamation Mark Irritant GHS07 Health Hazard GHS08 Environment GHS09
GHS Hazard Statements	H226:Flammable liquids H252:Self-heating substances and mixtures H304:Aspiration hazard H315:Skin corrosion/irritation H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P235:Keep cool. P273:Avoid release to the environment. P331:Do NOT induce vomiting. P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.