Product Description
Product: Sodium hydrosulfite
Synonyms: Sodium hydrosulphite, sodium dithionite
Molecular Formula: Na2S2O4
Molecular Weight: 174.10
CAS: 7775-14-6
HS: 2831.1010,
Hazard Calss: Class 4.2, 4.3 Spontaneously combustible substance
Property: Sodium hydrosulfite is a white crystalline powder with weak sulfurous odor. It is readily soluble in water, insoluble in alcohol.
Uses: 1, It is for vat dyes staining the reducing agent, reducing hair bleaching agents, vat dyes printing auxiliaries, silk scouring and bleaching agent, dyeing agents and objects of the peel color dye vat cleaning agent in the textile industry.
2, It is used as a mechanical pulp, mechanical pulp mill hot and deinking pulp bleaching agent in pulp and paper industry.
3, It is used as sugar, candy, candied fruit, caramel, cookies, fans, etc. Bleach and food preservation agent in the food industry
4, As a bleaching agent is widely used to restore the kaolin bleaching; Fur whitening bleaching and restore; Bamboo products and straw products such as bleach.
5, It is used as a reducing agent in chemical industry.
Synonyms: Sodium hydrosulphite, sodium dithionite
Molecular Formula: Na2S2O4
Molecular Weight: 174.10
CAS: 7775-14-6
HS: 2831.1010,
Hazard Calss: Class 4.2, 4.3 Spontaneously combustible substance
Property: Sodium hydrosulfite is a white crystalline powder with weak sulfurous odor. It is readily soluble in water, insoluble in alcohol.
Uses: 1, It is for vat dyes staining the reducing agent, reducing hair bleaching agents, vat dyes printing auxiliaries, silk scouring and bleaching agent, dyeing agents and objects of the peel color dye vat cleaning agent in the textile industry.
2, It is used as a mechanical pulp, mechanical pulp mill hot and deinking pulp bleaching agent in pulp and paper industry.
3, It is used as sugar, candy, candied fruit, caramel, cookies, fans, etc. Bleach and food preservation agent in the food industry
4, As a bleaching agent is widely used to restore the kaolin bleaching; Fur whitening bleaching and restore; Bamboo products and straw products such as bleach.
5, It is used as a reducing agent in chemical industry.
| Item | 90% | 88% | 85% | food grade |
| Na2S2O4 | ≥ 90% | ≥ 88% | ≥ 85% | ≥ 85% |
| (Fe) | ≤ 20ppm | ≤ 20ppm | ≤ 20ppm | ≤ 20ppm |
| (Zn) | ≤ 1ppm | ≤ 1ppm | ≤ 1ppm | ≤ 1ppm |
| Clarity | Clarify | Clarify | Clarify | Clarify |
| EDTA | - | - | - | Qualified |
| (As) | - | - | - | ≤ 1ppm |
| Other heavy metals(pb) | - | - | - | ≤ 1ppm |
| HCHO | - | - | - | ≤ 0.05% |
| water insoluble matter | ≤ 0.05% | ≤ 0.05% | ≤ 0.05% |