質(zhì)量標準: GB/T 664-93
項目Item 分析純 化學純
(AR) (CP)
含量(FeSO4·7H2O)Assay,% 99.0-101.0 98.0-101.0
水不溶物Insoluble matter in water,% ≤0.005 0.02
氯化物(Cl)Chloride,% ≤0.002 0.005
總氮量(N)Total nitrogen,% ≤0.001 --
磷酸鹽(PO4)Phosphate,% ≤0.0005 0.002
錳(Mn)Manganese,% ≤0.05 --
高鐵(Fe3+)Ferric,% ≤0.02 0.10
銅(Cu)Copper,% ≤0.005 0.01
鋅(Zn)Zinc,% ≤0.005 0.02
砷(As)Arsenic,% ≤0.00002 0.00005
鉛(Pb)Lead,% ≤0.002 0.002
氨水不沉淀物Substances not
precipitated by ammonia,% ≤0.05 0.2
ACS級
項目名稱Item ACS Grade
含量(FeSO4·7H2O)Assay ≥99.0%
水不溶物Insoluble matter in water ≤0.01%
氯化物(Cl)Chloride(Cl) ≤0.001%
磷酸鹽(PO4)Phosphate ≤0.001%
鈣(Ca)Calcium(Ca) ≤0.005%
銅(Cu)Copper(Cu) ≤0.005%
鎂(Mg)Magnesium(Mg) ≤0.002%
錳(Mn)Manganese(Mn) ≤0.05%
鉀(K)Potassium(K) ≤0.002%
鈉(Na)Sodium(Na) ≤0.02%
鋅(Zn)Zinc(Zn) ≤0.005%
高鐵(Fe3+)Ferric ion ≤0.1%