Sodium sulfite
1. CAS No.: 7757-83-7
2. Chemical Formula: Na2SO3
3. Appearance: white crystalline powder
4. Specification:
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Specifications: |
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Item |
super |
first |
qualified |
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Purity (na2co3) |
97.0%min. |
96% min. |
93.0%min. |
|
Fe |
0.003%max. |
0.005%max. |
0.01%max. |
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Water insoluble |
0.02%max. |
0.03% max. |
0.05%max. |
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Free alkali |
0.10%max. |
0.40% max. |
0.60%max. |
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Na2so4 |
2.5%max. |
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|
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Nacl |
0.10%max. |
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