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Sodium Hydrosulfite Producing Method: Sodium Formate Process
Sodium Hydrosulfite:
Converance:
Quantity/20'FCL: 22MT (440 Drums)
HS Code: 28311000
Producing Method: Sodium Formate Process
Spec.: 74%, 85%, 88%, 90%
Commodity name: Sodium Hydrosulfite
Molecular formula:Na2S2O4
Molecular weight:174
CAS Number 7775-14-6
UN number 1384
Class 4.2
Appearance white free-flowing crystal powderUsage: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. Quality Standard:
| INDEX | 90% | 88% | 85% | FOOD ADDITIVE |
| Na2S2O4 | ≥90% | ≥88% | ≥85% | ≥85% |
| Fe | ≤20ppm | ≤20ppm | ≤20ppm | ≤20ppm |
| ZincZn | ≤1ppm | ≤1ppm | ≤1ppm | ≤1ppm |
| Other heavy metalcalculated as Pb | ≤1ppm | ≤1ppm | ≤1ppm | ≤1ppm |
| Water Insolubles | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.05% |
| Shelf Life(month) | 12 | 12 | 12 | 12 |
sodium hydrosulfite