Potassium Chloride, Molecular Biology Grade Form Off-white crystalline solid Molar mass 74.6 Purity ≥99% by argentometry Contaminants DNases, proteases, RNases: none detected; heavy metals: ≤0.0005% (as Pb); iron: ≤0.0003%; magnesium: ≤0.002% Heavy metals ≤0.0005% (as Pb) pH value optimum 5.0 - 8.0 Solubility H2O Chemical formula KCl RTECS TS8050000 CAS number 7447-40-7 Merck USA index 14, 7621 商店和运输信息 Storage +15°C to +30°C Ship Ambient Temperature Only Standard Handling