8585. Sodium Bismuthate(V)

Nomenclature

CAS number: 12232-99-4
Bismuth sodium oxide (BiNaO3).
BiNaO3; mol wt 279.97.
Bi 74.64%, Na 8.21%, O 17.14%.
NaBiO3.

Description and references

The bismuthate of commerce contains about 85% NaBiO3; the balance is chiefly water and Bi2O3.

Properties

Yellow to yellowish-brown, somewhat hygroscopic. Slowly dec on keeping; decompn accelerated by moisture and higher temp. Insol in cold, dec by hot water forming Bi2O3, NaOH, and liberating oxygen; dec by acids; with HCl chlorine is formed; with oxy-acids oxygen is liberated. LD100 orally in rats: 720 mg/kg, Hanzlik et al., J. Pharmacol. Exp. Ther. 62, 372 (1938).

Use

For the determination of manganese in iron and steel, etc., the manganese being oxidized by it in hot HNO3 or H2SO4 soln to permanganate.