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COBALT CYANIDE

COBALT CYANIDE
COBALT CYANIDE structure
CAS No.
542-84-7
Chemical Name:
COBALT CYANIDE
Synonyms
COBALT CYANIDE;cobaltdicyanide;Cobal(II)cyanide;COBALTOUS CYANIDE;COBALT (II) CYANIDE;Cobalt(II)dicyanide;cobaltous dicyanide;cobalt(2+) dicyanide;cobaltcyanide(co(cn)2)
CBNumber:
CB9760231
Molecular Formula:
C2CoN2
Formula Weight:
110.97
MOL File:
542-84-7.mol

COBALT CYANIDE Properties

Density 
d425 1.872
form 
blue hygroscopic crystals
FDA UNII
3300OC3VVZ
EPA Substance Registry System
Cobalt cyanide (Co(CN)2) (542-84-7)
SAFETY
  • Risk and Safety Statements
Hazard Codes  T+,N
Risk Statements  26/27/28-32-50/53
Safety Statements  7-28-29-45-60-61
RIDADR  UN 1588 6.1/PG 2
WGK Germany  2
HazardClass  6.1(a)
PackingGroup  II

COBALT CYANIDE Chemical Properties,Uses,Production

Physical properties

The anhydrous form is a deep-blue powder; hygroscopic; density 1.872 g/cm3; melts at 280°C; insoluble in water. The dihydrate is pink to reddish brown powder or needles; insoluble in water and acids; soluble in sodium or potassium cyanide solutions, ammonium hydroxide, and hydrochloric acid.

Uses

The compound has limited commercial applications. It is used as a catalyst and in the preparation of cyanide complexes.

Preparation

The trihydrate salt is obtained as a reddish brown precipitate by adding potasium cyanide to a cobalt salt solution:
CoCl2 + KCN + 3H2O → Co(CN)2?3H2O + 2KCl
This on dehydration yields anhydrous Co(CN)2. The Co(CN)2?3H2O precipitate formed above redissolves when excess KCN is added, forming a red solution of potassium cobalt(II) cyanide, K4Co(CN)6. Stoichiomtric amount of KCN should, therefore, be used in the preparation of cobalt(II) cyanide.

Hazard

The compound is highly toxic by ingestion and possibly through other routes of exposure.

COBALT CYANIDE Preparation Products And Raw materials

Raw materials

Preparation Products


COBALT CYANIDE Suppliers

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