GB/T 16496-1996
分析纯
(AR)
含量(K2SO4)Assay,% ≥99.0
pH(50g/L,25℃)pH of water solution 5.0~0.8
澄清度试验Clarity 合格
水不溶物lnsoluble matter in water,% ≤0.005
氯化物(Cl)Chloride,% ≤0.0005
总氮量((N)Total nitrogen,% ≤0.0005
钠(Na)Sodium,% ≤0.03
钙(Ca)Calcium,% ≤0.01
铁(Fe)lron,% ≤0.0005
砷(As)Arsenic,% ≤0.0001
重金属(以Pb计)Heavy metals,% ≤0.000599.99% metals basis:
外观Appearance White Crystalline Powder
硫酸根SO4 (With Barium Chloride) 53.7 - 56.5 %
纯度Purity ≥99.99% Based on Trace Metals Impurities
ICP Major Analysis CoConfirms K and S Components
总痕量金属杂质total metallic impurities ≤100ppm by ICP Atomic emission