Sodium hydrosulphite (SHS)
Typical specification
| Item | Standard |
| Appearance | Free flowing white crystalline powder |
| Na2S2O4,% | 88min |
| Na2S2O5, % | 6.68max |
| Na2CO3, % | 2max |
| Na2S2O3, % | 0.19max |
| Na2SO3, % | 0.20max |
| Solution appearance, dissolution time 5mins (temperature 25°C 25gr/100ml) | clear |
| Water insoluble, % | 0.05max |
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