Longifolene
Longifolene is the common (or trivial) chemical name of a naturally
occurring, oily liquid hydrocarbon found primarily in the high-boiling
fraction of certain pine resins. The name is derived from that of a pine
species from which the compound was isolated, Pinus
longifolia.Chemically, longifolene is a tricyclic sesquiterpene. This
molecule is chiral, and the enantiomer commonly found in pines and other
higher plants exhibits a positive optical rotation of +42.73°. The
other enantiomer (optical rotation −42.73°) is found in small amounts in
some primitive plants like fungi and liverworts.Longifolene is used in
organic synthesis for the preparation of dilongifolylborane, a chiral
hydroborating agent.Longifolene is also one of two most abundant aroma
constituents of lapsang souchong tea, due to the fact that the tea is
smoked over pine fires.
| SPECIFICATIONS | |
| Appearance | Clear liquid |
| Colour, Hazen Unit (HU) max | 50 |
| Total Longifolene+CF, % minimum by GLC | 75-85% |
| Specific Gravity @ 20ºC | 0.928 - 0.934 |
| TYPICAL PROPERTIES | |
| Refractive index @ 20ºC | 1.5000 - 1.5060 |
| Flash Point (TCC) | Above 95º C |
| Odour | Sweet terpenic |
| Miscibility | Miscible in Benzene, CyclohexanePetroleum and Ether. |
| REGULATORY CLASSIFICATIONS | |
| CAS No. | 475-20-7 |
| Shipping Name | Longifolene |
| UN | N.A |
| TOXICOLOGY INFORMATION | |
| LD50 Oral (rat) | N.A |
| LD50 Dermal (rabbit) | N.A |
| Skin Irritation (20% in petrolatum) | No irritation |
| Skin sensitization (20% in petrolatum) | No sensitization Undiluted liquid may cause skin and eye irritation |
Applications
- In the preparation of blends of vetivert & Sandalwood oils
- Excellent fixative for woody odorants & floral blends
- In the preparation of cosmetics and toiletries such as – Cologne & toilet waters/sprays & deodorants / face creams
shave-skin lotions / soaps, detergents, bath salts & shampoos.