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Sodium sulfide |
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Alias: |
Akali sulphide |
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Quality standard: |
GB10500-89 |
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Molecular formula: |
Na2S·XH2O(x=2~9) |
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Molecular weight: |
Calculated anhydride |
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Properties: |
Anhydride is white crystal, density: 1.856(14℃). Melting point: 1180℃. Dissolving in water (10℃, solubility is 15.4g/100m water, 90℃ solubility is 57.2g/100ml water. |
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Application: |
In dye industry, it can be used to produce sulfur dye and it is the raw material of sulphur black and sulfur blue. In printing and dyeing industry, it can be used as dyeing auxiliaries of dissolving sulfur dye. In paper-making industry, It can be used as digestion liquor, etc. |
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Packing, storage and transportation: |
The lump product should be packed in iron drum with the drum wall at least 0.5mm. The iron drum should be sealed and the net weight is 160kg; the flake and granule product should be packed in plastic woven bag lined with double-layer polyethylene plastic film. Storing in ventilated and dry place or under asbestos shed, pay attention to rain-proof and damp-proof. |
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Quality standard:
| No. |
Item |
Index(Industrial grade) |
| A |
B |
| Premium grade |
First |
Qualified |
| 1 |
Sodium sulfide(Na2S),% = |
60.0 |
60.0 |
60.0 |
52.0 |
| 2 |
Sodium sulfite(Na2SO3),% = |
2.0 |
- |
- |
- |
| 3 |
Sodium thiosulfate(Na2S2O3),% = |
2.0 |
- |
- |
- |
| 4 |
Iron(Fe),% = |
0.04 |
0.15 |
0.20 |
0.15 |
| 5 |
Sodium carbonate(Na2CO3),% = |
3.0 |
5.0 |
- |
4.0 |
| 6 |
Water insoluble,% = |
0.20 |
0.40 |
0.80 |
0.60 |
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