Nomenclature
CAS number: 8006-54-0
Wool fat; anydrous lanolin; Emery 1600 (Henkel).
Description and references
Refined form of wool wax, the unctuous secretion
of the sebaceous glands of sheep which is deposited onto the wool
fibers. Known since antiquity for its emollient properties. Chemically
a wax consisting of a complex mixture of esters and polyesters of lanolin alcohols, q.v., and higher
fatty acids, including α- and ω-hydroxy acids. Lanolin can be separated
by solvent fractionation into lanolin oil and lanolin wax. Analytical
methods: C. W. Spilker, T. B. Richey, Cosmet.
Perfum. 88, 43 (Sept. 1973). Discussion of
lanolin allergy: R. Wolf, Dermatology 192, 198 (1996). Review of prepn, derivatives and uses:
G. Barnett, Cosmet. Toiletries 101, 23-44 (Mar. 1986); J. Thewlis, Agro-Food-Ind. Hi-Tech 8, no. 3, 14-20 (1997).
Properties
Translucent, pale yellow, soft tenacious solid;
slight odor or practically odorless. mp 38-42°. Sp gr at 25° 0.935. Iodine no.
27. Hydroxyl no. 32. Practically insol in water. Sparingly sol
in cold, more in hot alcohol; freely sol in chloroform, ether.Derivative
Hydrous lanolin.
Properties
Ointment base prepared by the addition of about
25-30% water. Yellowish-white unctuous mass; slight odor. Practically
insol in water. Sol in chloroform or ether with the separation of
the water.Derivative
Acetylated lanolin.
Nomenclature
CAS number: 61788-48-5
Acylan (Croda); Fancol ACEL (Fanning); Modulan (Amerchol); Ritacetyl (R.I.T.A.).
Description and references
Prepn: L. I. Conrad, K. Motiuk, J. Soc. Cosmet. Chem. 6, 344 (1955).
Properties
Almost odorless, pale yellow, soft, unctuous solid.
mp 36°. Sp gr at
25° 0.935. Iodine no. 27. Hydroxyl no. 2. Sol in mineral oils,
in some vegetable oils. Readily dispersed in oil-in-water emulsions.Derivative
Lanolin oil.
Nomenclature
Liquid lanolin; dewaxed lanolin; Lanogene (Amerchol); Lantrol 1673 (Henkel); Ritalan (R.I.T.A.). Properties
Amber viscous liquid. Odorless, tasteless. Sol
in mineral oil. Rich in lower molecular weight, branched aliphatic
acids and alcohols.Derivative
Lanolin wax.
Nomenclature
Lanfrax (Henkel). Properties
Light yellow waxy solid. Insol in water; emulsifies
in ≈3 parts water.Use
Pharmaceutic aid (ointment base). Emulsifier, emollient,
conditioner and lubricant in cosmetics and toiletries.