Potassium Nitrite
Title: Potassium Nitrite
CAS Registry Number: 7758-09-0
Molecular Formula: KNO2
Molecular Weight: 85.10
Percent Composition: K 45.94%, N 16.46%, O 37.60%
Literature References: The nitrite of commerce usually contains ~85% KNO2, the remainder consisting chiefly of nitrate.
Properties: White or slightly yellow, deliquesc granules or rods. Dec even by weak acids with evolution of brown fumes of nitrous anhydride. d 1.915; mp 441° (decompn starts at 350°). Sol in 0.35 part water, slightly in alc. The aq soln is alkaline. Keep well closed. LD50 orally in rabbits: 108 mg anion/kg, Dollahite, Rowe, Southwest. Vet. 27, 246 (1974).
Melting point: mp 441° (decompn starts at 350°)
Density: d 1.915
Toxicity data: LD50 orally in rabbits: 108 mg anion/kg, Dollahite, Rowe, Southwest. Vet. 27, 246 (1974)
Use: In analytical chemistry.
Therap-Cat: Vasodilator; antidote (cyanide poisoning).
Keywords: Antidote (Cyanide).

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