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GB/T
632-93
(GR) (AR)
(CP)
含量(Na2B4O7•10H2O)Assay,% ≥99.5 99.5
99.0
禁發 禁發 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 禁發 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
