DIPENTENE

PRODUCT IDENTIFICATION
CAS NO. 138-86-3

DIPENTENE 

EINECS NO. 205-341-0
FORMULA C10H16
MOL WT. 136.24

H.S. CODE

 2902.19
TOXICITY Orl rat LD50: 5300 mg/kg
SYNONYMS 1-methyl-4-(1-methylethenyl)cyclohexene;
Cajeputene; Cinene; Ciene; p-Mentha-1,8-diene; Cyclil decene; limonene; p-mentha-1,8-diene; 4-isopropenyl-1-methyl-Cyclohexene; Dipenten; DL-p-mentha-1,8-diene; 4-Isopropenyl-1-methyl-1-cyclohexene; Mentha-1,8-diene; Mentha-1,8-diene, DL; Menthadiene; Methyl-4-(1-methylethenyl)cyclohexene; Methyl-4-isopropenyl-1-cyclohexene; Methyl-4-isopropenylcyclohexene; Monocyclic terpene hydrocarbons; Terpodiene; 4-(1-methylethenyl)-1-methyl-cyclohexene;
SMILES  

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE

clear to pale yellow liquid with a lemon-like odor

MELTING POINT  
BOILING POINT 170 - 180 C
SPECIFIC GRAVITY 0.856
SOLUBILITY IN WATER Practically insoluble
pH  
VAPOR DENSITY  

NFPA RATINGS

 

AUTOIGNITION

 

REFRACTIVE INDEX

 1.4750
FLASH POINT

46 C

STABILITY Stable under normal conditions

GENERAL DESCRIPTION & APPLICATIONS
Dipentene is a terpene liquid found in various volatile oils such as cardamon, mace, nutmeg , turpentine oil. This term is also reffered to the racemic mixture of limonene. Dipentene is used as a solvent for resins, alkyds and waxes and to make paints, enamels, lacquers and polishes. It is used as a perfumery composition for soaps, personal care products and cosmetics. It is used as an intermediate for terpene resins, carvone, terylene, and rubber chemicals. It is used as an oils dispersant, metal dryer. It is used as a substitute for chlorinated solvents in degreasing metals for cleaning in the electronic industry and the printing industry. alpha-Limonene has been used as a gallstone solubilizer in pharmaceutical industry.
SALES SPECIFICATION

APPEARANCE

clear to pale yellow liquid with a lemon-like odor

DISTILLATION RANGE

170 - 190 C (92%)

SPECIFIC GRAVITY 0.850 - 0.875
TRANSPORTATION
PACKING 175kgs in drum
HAZARD CLASS 3 (Packing group: III)
UN NO. 2052
OTHER INFORMATION
European Hazard Symbols: XI N, Risk Phrases: 10-38-43-50/53, Safety Phrases: 24-37-60-61

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