Porpoise oil
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Description
A pale yellow liquid used as a lubricant for watches and precision instruments. Porpoise oil is obtained from the head and jaw of the beluga whale, Delphinapterus leucas, and the narwhal, Monodon monoceros. It is resistant to gumming, oxidation, and evaporation.
Synonyms and Related Terms
dolphin oil
Physical and Chemical Properties
- Soluble in ether, chloroform, benzene and carbon disulfide.
- Saponification value = 290
- Iodine value = 10-30
- Density = 0.926-0.929
Resources and Citations
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 867
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993