364. Aluminum Stearate

Nomenclature

CAS number: 637-12-7
Octadecanoic acid aluminum salt (3:1); stearic acid aluminum salt; aluminum tristearate.
C54H105AlO6; mol wt 877.39.
C 73.92%, H 12.06%, Al 3.08%, O 10.94%.
[CH3(CH2)16COO]3Al.

Description and references

Prepn: Gilmour et al., J. Chem. Soc. 1956, 1972.

Properties

Hard material, passes into plastic form on heating. mp 117-120°. Practically insol in water. When freshly made, sol in alcohol, benzene, oil turpentine, mineral oils. Forms cryst pyridine complex.

Use

Waterproofing fabrics, ropes; in paint and varnish driers; thickening lubricating oils; in cements; in light-sensitive photographic compositions.