Quality Standard: Q/(HG)SJ 767-1998
項目Item 分析純 化學(xué)純
(AR) (CP)
含量Assay,% ≥99.5 99.0
pH(50g/L溶液,25℃) 3.0-4.0 3.0-4.0
澄清度試驗Clarity 合格 合格
水不溶物Insoluble matter in water,% ≤0.005 0.01
氯化物(Cl)Chloride,% ≤0.0005 0.002
鈉(Na)Sodium,% ≤0.005 0.01
鉀(K)Potassium,% ≤0.005 0.01
鈣(Ca)Calcium,% ≤0.03 0.05
鐵(Fe)Iron,% ≤0.0003 0.001
砷(As)Arsenic,% ≤0.00005 0.0001
重金屬(以Pb計)Heavy metals,% ≤0.0005 0.001
項目名稱Item ACS Grade
含量Assay 98.0-102.0%
不溶物Insoluble matter ≤0.005%
氯化物(Cl)Chloride(Cl) ≤0.001%
重金屬(以Pb計)Heavy metals(as Pb) ≤0.001%
鈣(Ca)Calcium(Ca) ≤0.05%
鐵(Fe)Iron(Fe) ≤0.001%
鉀(K)Potassium(K) ≤0.05%
鈉(Na)Sodium(Na) ≤0.01%