alpha-Pinene

Synonyms

2,6,6-Trimethylbicyclo(3.1.1)-2-hept-2-ene; 2,6,6-Trimethylbicyclo(3.1.1)hept-2-ene; 2-Pinene; 4,6,6-Trimethylbicyklo(3,1,1)hept-3-en [Czech]; Acintene A; Bicyclo(3.1.1)hept-2-ene, 2,6,6-trimethyl; Monoterpenes; PINENE, ALPHA; Pinene isomer; alpha-Pinene (natural); [ChemIDplus] UN2368

Category

Terpenes

Description

Colorless liquid with an odor of turpentine; [HSDB]

Sources/Uses

Used to make camphor, insecticides, solvents, plasticizers, perfume bases, synthetic pine oil, flavorings, geraniol, terpineol, terpene esters and ethers, lube oil additives, camphene, terpin hydrate, and toxaphene; Also used as an odorant for synthetic resins and as a solvent for protective coatings, polishes, and waxes; [HSDB]

Comments

"Turpentine and the monoterpenes (alpha-pinene, beta-pinene, 3-carene) are skin and mucous membrane irritants, and in high concentrations, are central nervous system (CNS) depressants." A dermal sensitizer; [ACGIH] A skin, eye, and mucous membrane irritant; Toxic by ingestion with effects similar to turpentine poisoning; Mean lethal oral dose for adult = 4-6 oz; Potential health effects include CNS depression and kidney damage; [HSDB] Harmful by inhalation, ingestion, and skin absorption; [CAMEO] An irritant; May cause skin sensitization; [MSDSonline] See "Turpentine." See "TERPENES."

Biomedical References

No

20 ppm

5 ppm

4.75 mm Hg

LCLo (rat) = 0.625 mg/m3

Explanatory Notes

Flash point = 33 deg C; [HSDB] VP from ChemIDplus;

may ignite at ambient temp

Yes

Acute solvent syndrome

Yes

Not Classifiable

Diseases

Occupational diseases associated with exposure to this agent:

• Contact dermatitis, allergic
• Encephalopathy, chronic solvent
• Solvents, acute toxic effect

Processes

Industrial Processes with risk of exposure:

• Painting (Solvents)