nav Searchuser
Chemical Identification
Common Name
Hydrogen cyanide
中文通用名
氰化氢
IUPAC
hydrogen cyanide
CAS
hydrocyanic acid
CAS No.
74-90-8
Molecular Formula
CHN
Molecular Structure
Physical Properties
Molecular weight:27.0g/mol; Physical form:Colourless, flammable liquid, with an odour of almonds. Density:0.699 (20℃); Melting point:-15℃; Vapour pressure:961 kPa (25℃); Henry constant:2.59 Pa m3mol-1 (calc.); pKa:Weak acid; Solubility:Completely miscible with water. Soluble in ethanol and diethyl ether.; Stability:Stable, in the pure form. In the liquid form and in aqueous solution, stabilised by the addition of small quantities of mineral acids.
Toxicology
Oral Acute oral LD50 for rats 10-15 mg/kg.Skin and eye Rapidly absorbed by skin. Eye irritant.Inhalation Exposure for 30 min at 0.36 mg/l air is fatal to man.ADI (JMPR) 0.05 mg/kg b.w. [1965].
Environmental Profile
Ecotoxicology:
Bees:Toxic to bees, but not hazardous if used as directed.Birds:Toxic to birds.Fish:Toxic to fish.
Environmental fate:
Animals:The cyanide ion is metabolised mainly to thiocyanate.
Transport Information
Hazard Class:O (Obsolete as pesticide, not classified)

Porduct NewsMore

Australia approved world-first use of a product based on BASF’s herbicide Luximax

Cinmethylin

Australia to approve insecticide etofenprox

Etofenprox

Australia to approve Syngenta’s Callisto herbicide

Mesotrione

Atticus responds to 'meritless' patent infringement suit

Azoxystrobin

Corteva launches Pixxaro EC herbicide for cereal grains

Fluroxypyr Halauxifen-methyl

Canada to approve continued use of pyriproxyfen

Pyriproxyfen

Nissan Chemical's Agricultural Chemicals Segment sales down 3% in H1

fluxametamide

Ourofino launches fungicide against peanut early leaf spot in Brazil

Chlorothalonil

Australia approves BASF’s new insecticide broflanilide

broflanilide

Corteva announces plans to expand its global Spinosyns capacity

Spinosad

Related CompaniesMore