CAS No.: | 7681-57-4 |
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Formula: | Na2s2o5 |
EINECS: | 231-673-0 |
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TEST ITEMS
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TEST STANDARD
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FOOD GRADE
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INDUSTRY GRADE ONE
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INDUSTRY GRADE TWO
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INDUSTRY GRADE ONE
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Na2S2O5 %≥
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96.5
|
96.0
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94.0
|
92.5
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FERROUS(Fe) %≤
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0.005
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0.005
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0.010
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0.015
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WATER INSOLUBLE %≤
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_
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0.05
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0.05
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0.10
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ARSENIC(As) %≤
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0.0001
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0.0001
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_
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_
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HEAVY METAL(Pb) %≤
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0.0005
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_
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_
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_
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CLARITY
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PASS
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_
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_
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_
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