| ≥1 piece |
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Name of index |
GB3782-1986 |
BP93 |
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Appearance |
Colourless or white crystal or crystalline |
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Content,( Na 3 C 6 H 5 O 7 ·2H 2 O)% |
≥99.0 |
99.0??101.0 |
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PH value |
Accord with the stipulation |
0.2 |
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Heavy metal£¨As Pb£?£?% |
≤0.0005 |
≤0.001 |
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Arsenic (As)£?% |
≤0.0001 |
--- |
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Ba£?% |
conform |
--- |
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Fe£?% |
≤0.001 |
--- |
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Oxalates£?% |
≤0.05 |
≤0.03 |
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Sulphates£?% |
≤0.03 |
≤0.015 |
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Calcium, |
conform |
--- |
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Chlorides£?% |
≤0.01 |
≤0.005 |
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Easy carbonify substance, |
conform |
conform |
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Loss on drying,% |
--- |
10.0-13.0 |
|