| CAS
NO. |
123-35-3 |
|
| EINECS
NO. |
204-622-5 |
| FORMULA |
H2C=CHC(=CH2)CH2CH2CH=C(CH3)2 |
| MOL
WT. |
136.24 |
| H.S.
CODE |
2901.29 |
| TOXICITY |
Oral rat LD50: 5000 mg/kg |
| SYNONYMS |
7-Methyl-3-methylene-1,6-octadiene;
beta-myrcene; |
|
2-Methyl-6-methylene-2,7-octadiene; 3-Methylene-7-methyl-1,6-octadiene;
Geraniolene; |
|
SMILES |
Pinene by pyrolyis |
|
CLASSIFICATION
|
TERPENES / |
|
PHYSICAL AND CHEMICAL PROPERTIES
|
| PHYSICAL
STATE |
clear
to pale yellow liquid |
| MELTING POINT |
|
| BOILING
POINT |
167
C |
| SPECIFIC GRAVITY |
0.801
|
| SOLUBILITY
IN WATER |
|
|
SOLVENT
SOLUBILITY
|
soluble in alcohol, chloroform, ether, acetic acid
|
| pH |
|
| VAPOR DENSITY |
4.7 |
|
AUTOIGNITION
|
|
|
NFPA
RATINGS
|
|
|
REFRACTIVE
INDEX
|
1.4690 |
|
FLASH
POINT
|
39
C
|
| STABILITY |
Stable
under ordinary conditions |
|
APPLICATIONS
|
|
Myrcene,
an olefinic terpene,
is one
of the most important chemicals used in the perfumery industry.
It is
obtained from an essential oil from myrcia oilor
beta-Pinene
through
pyrolysis.
Myrcene is used as
an intermediate for the preparation of
flavor and fragrance chemicals such as citral, citronellol, citronellal, geraniol, nerol, and
linalool. It is used in perfumery and pharmaceuticals as an odorant. |
| SALES
SPECIFICATION |
|
APPEARANCE
|
clear
to pale yellow liquid |
| ASSAY |
90.0%
min
|
|
SPECIFIC
GRAVITY
|
0.789
min
|
|
REFRACTIVE
INDEX
|
1.466
- 1.471
|
|
COLOR
|
5
max (Gardner) |
| TRANSPORTATION |
| PACKING |
160kgs
in drum |
| HAZARD CLASS |
3
(Packing Group: III) |
| UN
NO. |
2319 |
| GENERAL
DESCRIPTION OF TERPENE
|
A class of naturally occurring compounds mainly in
plants as constituents of essential oils whose carbon skeletons are composed
exclusively of isoprene C5 units (CH2=C(CH3)-CH=CH2). Most terpenes are
hydrocarbons having molecular formula (C5H8)n in a cyclic or
acyclic, saturated or unsaturated structure, while the terpenoids are
oxygen-containing analogues of the terpenes such as alcohols, aldehydes or
ketones containing hydroxyl groups or carbonyl groups. Several vitamines,
hormones, flavour and flagrances and latex are terpenoids. Terpenes containing
30 or more carbons are usually formed by the fusion of two terpene precursors in
a regular pattern, usually head-to-tail appears to be violated. They are differ
from one another not only in functional groups but also in their basic carbon
skeletons. Terpenes are employed mainly the fragrance and flavour purpose, as
well as in the pharmaceutical and chemical industries. They are classified by
the number of isoprene units:
|
Class |
number of
isoprene |
Examples |
|
Hemiterpene |
1
(C5H8) |
Found
in associated with Alkaloids, Coumarins and Flavonoids. |
|
Monoterpenes |
2
(C10H16) |
Geraniol, Citronellol, Pinene, Nerol, Citral,
Camphor, Menthol, Limonene, Thujone |
|
Sesquiterpenes |
3
(C15H24) |
Nerolidol, Farnesol |
|
Diterpenes |
4
(C20H32) |
Phytol, Vitamin A1 |
|
Triterpenes |
6
(C30H48) |
Squalene |
|
Tetraterpenes |
8
(C40H84) |
Carotene (Provitamin A1) |
|
Polyterpenes |
>10
(C5H8)n |
| |