Limonene

Synonyms

(+-)-Dipentene; (+-)-Linonene; (+-)-alpha-Limonene; 1,8(9)-p-Menthadiene; 1,8-p-Menthadiene; 1-Methyl-4-(1-methylethenyl)cyclohexene; 1-Methyl-4-isopropenyl-1-cyclohexene; 1-Methyl-p-isopropenyl-1-cyclohexene; 4-Isopropenyl-1-methyl-1-cyclohexene; Acintene DP; Acintene DP dipentene; Cajeputen; Cajeputene; Cinen; Cinene; Cyclohexene, 1-methyl-4-(1-methylethenyl)-; DL-4-Isopropenyl-1-methylcyclohexene; Di-p-mentha-1,8-diene; Dipanol; Dipenten; Dipentene; Dipentene 200; Eulimen; Flavor orange; Goldflush II; Inactive limonene; Kautschin; Limonen; Mentha-1,8-diene (DL); Nesol; Orange flavor; PC 560; Unitene; alpha-Limonene; d,l-Limonene; delta-1,8-Terpodiene; dl-Limonene; p-Mentha-1,8-diene, (+-)-; p-Mentha-1,8-diene; [ChemIDplus] UN2052

Category

Terpenes

Description

Colorless liquid with a citrus-like odor; [ChemIDplus]

Sources/Uses

Used in flavorings, fragrances, cosmetics and as a solvent and wetting agent; Also used to make resins, insecticides, insect repellants, and animal repellants; [HSDB] Used as a dissolving agent for gallstones and gutta-percha; [ChemIDplus] Used in floor waxes and furniture polishes; [CAMEO] Occurs naturally in essential oils of many plants and is a minor constituent of turpentine; [CHEMINFO]

Comments

Skin and eye irritant; A skin sensitizer; [HSDB] Danger of skin sensitization; [MAK] An irritant; May cause skin sensitization; [MSDSonline] The racemic mixture of d-limonene and l-limonene is called dipentene (138-86-3).[Kanerva, p. 1789] See "l-Limonene" and "d-Limonene."

Reference Link #1

Biomedical References

1.55 mm Hg

LC50 (mice) = 67,500 mg/m3

Explanatory Notes

Flash point = 45 deg C; [HSDB] VP from ChemIDplus;

high ambient temp required

30 ppm

Yes

Acute solvent syndrome

Diseases

Occupational diseases associated with exposure to this agent:

• Contact dermatitis, allergic
• Solvents, acute toxic effect

Processes

Industrial Processes with risk of exposure:

• Painting (Solvents)