2450. Cobaltous Thiocyanate

Nomenclature

CAS number: 3017-60-5
Cobaltous rhodanide; cobaltous sulfocyanate.
C2CoN2S2; mol wt 175.10.
C 13.72%, Co 33.66%, N 16.00%, S 36.62%.
Co(SCN)2.

Description and references

Prepn: Gmelins, Cobalt (8th ed.) 58 (part A), 380 (1932) and supplement, 720-722 (1961); Schlessinger, Inorganic Laboratory Preparations (Chemical Publishing, New York, 1962) p 44.

Properties

Yellow-brown powder. Soluble in water to give a rose-colored soln; sol in ethanol, methanol, ether, acetone, CHCl3 to give blue solns.

Derivative

Trihydrate.

Properties

Violet to violet-brown rhombic crystals; red in transmitted light. Sol in water to give blue soln which becomes pink on dilution; sol in ethanol, ether, acetone to give blue solns.

Use

As humidity indicator.