699. Antimony Potassium Oxalate

Nomenclature

CAS number: 5965-33-3
Ethanedioic acid anhydride with antimonic acid (3:1) tripotassium salt; tripotassium tris(oxalato)antimonate(3); potassium oxalatoantimonate(III); “antimony salt”.
C6K3O12Sb; mol wt 503.11.
C 14.32%, K 23.31%, O 38.16%, Sb 24.20%.
K3[Sb(OOCCOO)3].

Description and references

Prepn of trihydrate: Graddon, J. Inorg. Nucl. Chem. 3, 308 (1956-1957).

Properties

Trihydrate, cryst powder. Sol in water. Poisonous.

Use

A mordant in dyeing and printing fabrics instead of tartar emetic.