Tall oil

Description

A black, resinous liquid obtained as a byproduct from the sulfate, or kraft, paper pulping of pine wood. Tall oil contains 35-60% rosin acids and 50-60% fatty acids (oleic and linoleic). It is mixed with lime to produce an inexpensive, oily liquid that dries to a brittle yellow film. Tall oil is used in the manufacture of soaps, greases, paints, alkyd resins, linoleum, fungicides, cutting oils, and asphalt emulsions.

Synonyms and Related Terms

tallol; talleol; liquid rosin

Physical and Chemical Properties

• Acid no. = 170-180
• Saponification no. = 172-185
• Iodine no. 120-188
• Density = 0.95-0.1 g/ml
• Refractive Index = ~ 1.5

Resources and Citations=

• G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 795

• 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 9210

• Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997

• The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998

• Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002

• Guy Weismantel, Paint Handbook, McGraw-Hill Book Company, New York, 1981