Appearance White powder
Content, % (m/m) ≥ 99.7
Melting point, °C ≥ 151.5
Chroma, platinum-cobalt ≤ 5
Water content, %(m/m) ≤ 0.2
Ash content, mg/kg ≤ 7
Fe content, mg/kg ≤ 1
nitrate radical, mg/kg ≤ 10
Oxidable substance(based on adipic acid) mg/kg ≤ 60
Melts chroma, platinum-cobalt≤ 50