- Product Description:
Product Name: Sodium Hydrosulfite
Molecular formula: Na2S2O4
CAS No.: 7775-14-6
EINECS No.:231-890-0
- Product Characteristics:
1)Appearance white free-flowing crystal powder. 2)Smell:flavourless or smell of sulfur dioxide
- Product Technical Data:
| Item | 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 | ≤1ppm | ≤1ppm | ≤1ppm | ≤1ppm |
| (calculated as Pb) | ||||
| Water Insolubles | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.05% |
| Shelf Life(month) | 12 | 12 | 12 | 12 |
- Product Application:
- Widely used in textile industry for vat dyeing, reduction cleaning, printing and stripping, textile textile bleaching.
- It is also used in bleaching paper pulps, especially mechanical pulps, it’s the most fittable bleaching agent in pulps.
- It is used in bleaching kaolin clay, fur bleaching and reductive whitening, bleaching of bamboo products and straw products.
- It is used in mineral, the compound of thiourea and other sulphides.
- It is used as reducing agent in chemical industry.
- Sodium hydrosulfite food additive grade is used in foodstuffs, as bleaching agent and preservative in dried fruits, dried vegetable, vermicelli, glucose, sugar, rock sugar, caramel, candy, liquid glucose, bamboo shoots, mushrooms and canned mushrooms.
- Product Storage & handling:
Being a strong reducing agent , sodium hydrosulfite can decompose easily while exposed to air and moisture no matter it is made by any kinds of production processes. The product must be stored in sealed iron drums or bulk containers in a cool dry place away from moisture, acids, oxidizing chemicals and combustible organic substances . Protect the product away from direct sunlight , heat , sparks and open flames.Carefully handle the product and avoid damaging the package.