Nomenclature
CAS number: 1592-23-0
Octadecanoic acid calcium salt; stearic acid calcium salt.
C
36H
70CaO
4; mol wt 607.02.
C 71.23%, H 11.62%, Ca 6.60%, O 10.54%.
Description and references
The commercial prepn also contains palmitate.
Prepn: Harrison, Biochem. J. 18, 1222 (1924); Kebrich, Petrot, US 2650932 (1953 to National Lead).
Properties
Granular, fatty powder. Bulk
density ≈20 lb/cu ft, mp 147-149° (determined by gradient bar). Practically insol in water, ether, chloroform, acetone, cold alcohol;
slightly sol in hot alcohol, in hot vegetable and mineral oils; quite
sol in hot pyridine.Use
For waterproofing fabrics, cement, stucco, explosives;
as a releasing agent for plastic molding powders; as a stabilizer
for polyvinyl chloride resins; lubricant; in pencils and wax crayons.
Food grade calcium stearate, derived from edible tallow, is used
as a conditioning agent in certain food and pharmaceutical products.