Quality Standard: GB/T 9856-88
項(xiàng)目Item 分析純 化學(xué)純
(AR) (CP)
含量(Na2CO3.10H2O)Assay,% ≥ 99.0 99.0
澄清度試驗(yàn)Clarity 合格 合格
水不溶物Insoluble matter in water,% ≤ 0.005 0.01
氯化物(Cl)Chloride,% ≤ 0.001 0.003
總硫量(以SO4計(jì))Total Sulfate,% ≤ 0.003 0.005
磷酸鹽(PO4)Phosphate,% ≤ 0.0005 0.002
硅酸鹽(SiO3)Silicate,% ≤ 0.001 0.005
總氮量(N)Total nitrogen,% ≤ 0.0005 0.001
鎂(Mg)Magnesium,% ≤ 0.0003 0.002
鋁(Al)Aluminum,% ≤ 0.0005 0.003
鉀(K)Potassium,% ≤ 0.003 0.01
鈣(Ca)Calcium,% ≤ 0.003 0.008
鐵(Fe)Iron,% ≤ 0.0002 0.0003
重金屬(以Pb計(jì))Heavy metals,% ≤ 0.0002 0.0005
ACS級(jí)
項(xiàng)目名稱 ACS Grade
含量(Na2CO3·H2O)Assay ≥99.5%
干燥失重Loss on drying 13-15%
水不溶物Insoluble matter ≤0.01%
氯化物(Cl)Chloride ≤0.001%
磷酸鹽(PO4)Phosphate ≤5ppm
硅酸鹽(以SiO2計(jì))Silica ≤0.005%
含硫化合物(以SO4計(jì))Sulfur compounds ≤0.004%
重金屬(以Pb計(jì))Heavy metals ≤5ppm
鐵(Fe)Iron ≤5ppm
鈣(Ca)Calcium ≤0.03%
鎂(Mg)Magnesium ≤0.005%
鉀(K)Potassium ≤0.005%