GB/T
632-93

(GR) (AR)
(CP)

含量(Na2B4O7•10H2O)Assay,% ≥99.5 99.5
99.0

禁發(fā) 禁發(fā) 鹽酸不溶物Insiluble
matter

in
hydrochloric,% ≤0.003 0.005 0.02

氯化物(Cl)Chloride,%
≤0.0005 0.002 0.005

禁發(fā) 禁發(fā) 硫酸鹽(SO4)Sulfate ,% ≤0.005 0.01
0.015

磷酸鹽(PO4)Phosphate,% ≤0.001 0.002 0.005

鈣(Ca)Calcium,% ≤0.001 0.005 0.02

鐵(Fe)Iron,% ≤0.0001 0.0003
0.0005

銅(Cu)Copper,% ≤0.0005 0.001
0.002

鉛(Pb)Lead,% ≤0.0005
0.001 0.002