Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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lanolin

A widely occurring crude preparation of cholesterol and its esters. Some lanolins are derived by solvent extraction from the sebaceous glands of wooled sheepskins. The molten wax is washed with alkaline (carbonate) solutions followed by water alone. When pure, lanolin is white and odorless, has excellent emulsifying properties and does not readily turn rancid. It has a softening range of 58 to 62° C. Lanolin is employed as one of the constituents of leather dressings, and is valuable because of its powers of penetration, its favorable softening range, and its ability to supply body to the dressing. Also called "wool wax." (218 , 235 )




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