Na2S2O4 Sodium Hydrosulfite SHS 85% 88% 90%
Sodium Hydrosulfite
Product: Sodium hydrosulfite
CAS No: 7775-14-6
Purity: 90% ,88% ,85%
MF: Na2S2O4
MW: 174.11
EINECS No: 231-890-0
MP:300 °C
BP:1390°C
Density:2.13
Storage temp.:Store at RT.
Solubility:250 g/L (20°C)
Water Solubility:250 g/L (20°C)
CAS DataBase Reference:7775-14-6(CAS DataBase Reference)
NaCO3(wt%):2-6
Appearance: Free-flowing white crystalline powder
Odor: Odorless or with a slight odor of sulfur dioxide
Usage: Sodium Hydrosulphite is widely used in textile industry for vat dyeing, reduction cleaning, printing and stripping etc.
Specification of Na2S2O4 Sodium Hydrosulfite SHS
Quality standard:
Technical grade: HG/T 2074-1991 JIS K 1476-1995
Food grade: GB2682-199
Warranty period: 12 months after production date
| INDEX | 90% | 88% | 85% | FOOD ADDITIVE |
| Na2S2O4 | ≥90% | ≥88% | ≥85% | ≥85% |
| Fe | ≤20ppm | ≤20ppm | ≤20ppm | ≤20ppm |
| Zinc(Zn) | ≤1ppm | ≤1ppm | ≤1ppm | ≤1ppm |
Other heavy metal
(calculated as Pb) | ≤1ppm | ≤1ppm | ≤1ppm | ≤1ppm |
| Water Insolubles | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.05% |
| Shelf Life(month) | 12 | 12 | 12 | 12 |
Analysis report: | ITEM | 90% | 88% | 85% | FOOD ADDITIVE |
| Na2S2O4 | 91.00% | 89.50% | 86.60% | 86.96% |
| Na2S2O5 | 6.39% | 6.64% | 6.82% | 6.54% |
| Na2CO3 | 1.10% | 2.50% | 5.70% | 5.58% |
| Na2S2O3 | 0.18% | 0.20% | 0.41% | 0.38% |
| Na2SO3 | 0.22% | 0.21% | 0.32% | 0.36% |
| Fe | 14ppm | 15ppm | 16ppm | 11ppm |
| Water Insolubles | 0.05% | 0.04% | 0.04% | 0.01% |
Application of Na2S2O4 Sodium Hydrosulfite SHS 1. Widely used in textile industry for vat dyeing, reduction cleaning, printing and stripping, textile textile bleaching .
2. It is also used in bleaching paper pulps , especially mechanical pulps, it's the most fittable bleaching agent in pulps.
3. It is used in bleaching kaolin clay, fur bleaching and reductive whitening, bleaching of bamboo products and straw products,
4. It is used in mineral, the compound of thiourea and other sulphides.
5. It is used as reducing agent in chemical industry.
6. Sodium hydrosulfite food additive grade is used in foodstuffs, as bleaching agent and preservative dried fruits, dried vegetable, vermicelli, glucose, sugar, rock sugar, caramel, candy, liquid glucose, bamboo shoots, mushrooms and canned mushrooms. Package of Na2S2O4 Sodium Hydrosulfite SHS Iron bucket hermetic packing, inside liner double-layer plastic bag,net weight 50KG, 21mt per 20FCL.
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