Hempseed oil

Description

A vegetable drying oil pressed from the seeds of the hemp plant, Cannabis sativa. Hempseed oil is similar in properties to poppy seed oil and has been used for paint media, varnishes, food, and soap in India, China, Hungary, Poland, Russia, and Japan. Hempseed oil contains approximately 10% saturated fatty acids, such as palmitic and stearic acids, with the remainder being unsaturated acids, such as linoleic, linolenic, and oleic. Hempseed oil tends to be greasy and wrinkles when dry.

Synonyms and Related Terms

"Cannabis sativa; hemp oil; huile de chanvre (Fr.); aceite de cáñamo (Esp.); olio di canapa (It) "

Other Properties

Iodine value = 148-160; Acid number = 0.45; Saponification value = 190-193.

Density	0.923-0.927
Refractive Index	1.470-1.472

Hazards and Safety

Combustible.

Authority

• Encyclopedia Britannica, http://www.britannica.com Comment: "Hemp." Encyclopædia Britannica. 2004. Encyclopædia Britannica Premium Service. 14 Apr. 2004 .

• Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993

• R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966

• Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)

• M. Doerner, The Materials of the Artist, Harcourt, Brace & Co., 1934

• Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000