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A colorless liquid with a lemon-like odor that occurs naturally in oils of lemon, orange, caraway, dill, and bergamot. Dipentene, or limonene, is used as a wetting and dispersing agent in liquid soaps, inks, perfumes, paints, varnishes, floor finishes, and furniture polishes. It is also used as a solvent for alkyd resins, rosin, waxes, and rubber compounds.

Synonyms and Related Terms

cinene; limonene; cajeputene; kautschin; dl-p-mentha-1,8-diene; 1-methyl-4-(1-methylethenyl)cyclohexene

Chemical structure


Other Properties

Miscible with ethanol. Insoluble in water.

Composition C10H16
CAS 138-86-3
Melting Point -97
Density 0.8402
Molecular Weight mol. wt. = 136.24
Boiling Point 175.5-176.5

Hazards and Safety

Skin irritant. Flammable. Flash point = 42C (107.6F)

Fisher Scientific: MSDS

Sources Checked for Data in Record

  • R. Mayer, The Artist's Handbook of Materials and Techniques, Viking Press, New York, 1981
  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 5518
  • MSDS Sheet Comment: Fisher Scientific: flash point = 46 C, bp= 165C