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Sodium metadisulfite
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M.F.:
|
Na2S2O5 |
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Standard:
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GB/T 15900-1995 |
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Specifications:
|
AR.CP |
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Technical requirements\specifications
|
AR
|
CP
|
Industrial grade
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| Content≥ |
96.0
|
92.0
|
95.0
|
|
Clarity test
|
Up to standard
|
Up to standard
|
-
|
|
Water insolubility≤
|
0.005
|
0.01
|
0.1
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| Chloride(CL)≤ |
0.005
|
0.02
|
-
|
| Fe≤ |
0.0005
|
0.002
|
-
|
| As≤ |
0.0001
|
0.0002
|
-
|
| Heavy metal(Pb)≤ |
0.0005
|
0.002
|
-
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| Hyposulphite (S2O3)≤ |
0.05
|
-
|
-
|
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