亚硝酸钾

Potassium Nitrite Characteristics: Potassium nitrite is a crystalline material with an off-white-to-straw color. It is hygroscopic, deliquescent and very soluble in water. It decomposes in acid solutions to form unstable nitrous acid. Potassium nitrite is sold as a moist crystal to help delay the onset of caking. Properties: Chemical formula KNO2 Molecular weight 85.11 Absolute density, g/cm3 1.915 Melting point, °C 441 Decomposition begins, °C 350 Solubility in water*, g/100g H2O 281 @ 0°C 413 @ 100°C Specifications: Assay (on Dry Basis): 97% min. Chlorides: 0.2% max. Sulphates: 0.02% max. Heavy Metal (as Pb): 0.005% max. Water insoluble: 0.01% max. Iron (as Fe): 0.005% max. Moisture: 2% max.