Agent Name

Calcium cyanide

CAS Number

592-01-8

Formula

C2-Ca-N2

Major Category

Toxic Gases & Vapors

Synonyms

Calcid; Calcium cyanide (mixture); Calcium cyanide [ISO]; Calcyan; Calcyanide; Cyanide of calcium; Cyanogas; Cyanure de calcium [French]; Degesch Calcium Cyanide A-Dust; [ChemIDplus] Cyanogas A-dust; Cyanogas G-fumigant; [CHRIS] UN1575

Category

Cyanides

Description

Colorless or white solid; Technical grade is gray-black in color; [Hawley] White powder; Decomposes in water or moisture releasing hydrogen cyanide; [Sullivan, p. 707]

Sources/Uses

Used to make stainless-steel and other cyanides; Also used to leach ores for precious metals and to stabilize cement; No longer registered as a pesticide product (rodenticide, fumigant, insecticide, and miticide); [HSDB] Produced only in South Africa and used there to leach precious metals from ores; [Ullmann]

Comments

Releases hydrogen cyanide in moist air; [Hawley] A skin, eye, and respiratory tract irritant; May cause cyanide poisoning; [ICSC] See "CYANIDES."

Exposure Assessment
Skin Designation (ACGIH)

Yes

Ceiling (ACGIH)

5 mg/m3, as CN, PEL:, as CN, MAK:, inhalable fraction, as CN

PEL (OSHA)

5 mg/m3Ceiling:, as CN, , as CN, MAK:, inhalable fraction, as CN

MAK

2 mg/m3Ceiling:, as CN, PEL:, as CN, , inhalable fraction, as CN

IDLH (NIOSH)

25 mg/m3, as CN

Vapor Pressure

0.03 mm Hg

Adverse Effects
Other Poison

Chemical Asphyxiant

Links to Other NLM Databases
Health Studies

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Chemical Information

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Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: