详情
Sodium hydrosulphite
Quality standard: HG/********4, JISK********5, HG/T********5
Molecular formula: Na2S2O4
Appearance: White free-flow crystal powders
Packing: *5kg, *5kg, *0kg or **0kg net in iron drums with double
inner polybags.
Application:
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.
| INDEX |
*0% |
*8% |
*5% |
FOOD ADDITIVE |
| Na2S2O4 |
≥ *0% |
≥ *8% |
≥ *5% |
≥ *5% |
| Fe |
≤ *0ppm |
≤ *0ppm |
≤ *0ppm |
≤ *0ppm |
| Zinc(Zn) |
≤ 1ppm |
≤ 1ppm |
≤ 1ppm |
≤ 1ppm |
Other heavy metal
(calculated as Pb) |
≤ 1ppm |
≤ 1ppm |
≤ 1ppm |
≤ 1ppm |
| Water Insolubles |
≤ 0.*5% |
≤ 0.*5% |
≤ 0.*5% |
≤ 0.*5% |
| Shelf Life(month) |
*2 |
*2 |
*2 |
*2 |
