質(zhì)量標(biāo)準(zhǔn): GB/T 1279-89
項目Item 分析純 化學(xué)純
(AR) (CP)
含量[NH4Fe(SO4)2·12H2O)Assay,% ≥99.0 98.0
水不溶物Insoluble matter in water,% ≤0.005 0.015
氯化物(Cl)Chloride,% ≤0.0005 0.005
硝酸鹽(NO3)Nitrate,% ≤0.01 0.02
鈉(Na)Sodium,% ≤0.01 0.05
鎂(Mg)Magnesium,% ≤0.01 0.05
鉀(K)Potassium,% ≤0.01 0.05
錳(Mn)Manganese,% ≤0.005 --
亞鐵(Fe)Ferrous,% ≤0.001 0.005
銅(Cu)Copper,% ≤0.002 0.01
鋅(Zn)Zinc,% ≤0.003 0.01
鉛(Pb)Lead,% ≤0.001 --
ACS級
項目名稱Item ACS Grade
含量[Fe(SO4)2NH4·12H2O]Assay 98.5-102.0%
水不溶物Insoluble matter in water ≤0.01%
氯化物(Cl)Chloride ≤0.001%
硝酸鹽(NO3)Nitrate ≤0.01%
鈣(Ca)Calcium ≤0.01%
銅(Cu)Copper ≤0.003%
鎂(Mg)Magnesium ≤0.005%
鉀(K)Potassium ≤0.005%
鈉(Na)Sodium ≤0.02%
鋅(Zn)Zinc ≤0.003%
亞鐵鹽(Fe2+)Ferrous Passes test