Tall Oil

Also found in: Dictionary, Thesaurus, Wikipedia.

tall oil

[′täl ‚ȯil]
A yellow-black, malodorous, resinous admixture of rosin, fatty acids, sterols, high-molecular-weight alcohols, and other materials, derived from wood-pulping waste liquors; used in paint drying oils, alkyd resins, linoleum, soaps, lubricants, and greases. Also known as liquid rosin; tallol.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Tall Oil


(also tallol, liquid rosin), a dark viscous liquid with a density of 0.96–0.99 g/cm3 that is obtained from the decomposition by sulfuric acid of sulfate soap—a by-product of the sulfate pulping of cellulose. Crude tall oil is 30–50 percent rosin acids (C19H29COOH) and 35–55 percent fatty acids, including palmitic acid (C15H31COOH), oleic acid (C17H33COOH), and linolenic acid (C17H29COOH). It also contains neutral substances, moisture, a small quantity of sulfur compounds, and substances (oxidized) insoluble in petroleum ether. The percentages of the principal components can vary, depending on the type of wood used.

Crude tall oil is used to obtain tall-oil rosin and tall-oil fatty acids; small quantities are used as foaming agents in the dressing of ores. Refined tall oil is used in the paint and varnish industry to manufacture drying oils, mastics, and paints. Production of crude tall oil in the USSR was 95,000 tons in 1974.


Komshilov, N. F. Kanifol’, ee sostav i stroenie smolianykh kislot. Moscow, 1965.
Bogomolov, B. D., and A. A. Sokolova. Pobochnye produkty sul’fatnotselliuloznogo proizvodstva. Moscow, 1962.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
"In the supply/demand balance for tall oil, biofuels are a big factor," said Ian Anderson, UK sales manager for Forchem, a Finnish tall oil producer which has just announced a 20 percent increase in its prices.
The global tall oil fatty acid (TOFA) market has been segmented by product type into linoleic acid, oleic acid, and others.
The companies will separately enter into a 20-year crude tall oil supply contract.
The parties will also separately sign a 20-year, market-based crude tall oil supply contract.
Synthesis of trimethylolpropane esters of tall oil fatty acids and properties of polyurethane coatings on their basis--V.
using recycled vegetable oil from fast food restaurants; tall oil (a by-product of the pulp and paper industry) and swine manure.
NORDIC BUSINESS REPORT-December 8, 2014-Alfa Laval awarded SEK50m order from tall oil plant in Russia
Among this year's 22 papers are discussions of improving the absorption properties of cotton blended fabric, electrochemical properties of advanced anodes for lithium-ion batteries based on carboxy-methyl-cellulose as binder, three different approaches for synthesizing polyal from rapeseed oil, properties of polyurethanes based on tall oil fatty acid esters with different types of flame retardants, and liquid crystalline co-polyester made from recycled polyethylene terephthalate and p-acetoxybenzoic acid.
To develop the technology, EBRI wants to hear from businesses which have waste sources such as food and agricultural waste, sewage sludge, manure and biomass (woody and non-woody materials), as well as tall oil from the pulp industry.
patent for its technology to extract plant sterols and stanols from tall oil pitch.
It will produce 120 million litres of renewable diesel from tall oil per year, according to UPM.