sodium hydrosulphite 96% with industrial grade
Specification:
ITEMS | Premium grade | ||
| Super grade | First grade | Salable product |
Sodium sulfite ( Na2SO3 ) , % ≥ | 97.0 | 96.0 | 93.0 |
Fe , ≤ | 0.003 | 0.005 | 0.01 |
Water insoluble matter , % ≤ | 0.02 | 0.03 | 0.05 |
Free alkali ( as Na2SO3 ) , % ≤ | 0.10 | 0.40 | 0.60 |
Na2SO4 , % ≤ | 2.50 | / | / |
NaCl , % ≤ | 0.10 | / | / |
Usage:
1. for the preparation of a trace analysis of tellurium and determination of niobium and developering, also used as a reducing agent
2. for synthetic fiber fabric bleaching agent, stabilizer, photographic developer, dye bleaching deoxidizer, perfume and dye reduction agent, lignin removal agent
3. Used as ordinary analytical reagent and photosensitive resistance materials
4. Reductive bleaching agent, the food has strong inhibitory effects on plant food bleaching effect and the oxidase.
5.For a variety of cotton fabric scouring of cotton fiber, can prevent local oxidation and influence of fiber strength, and improve the whiteness of boiling.
6.In food industry,it used as a bleaching agent, preservative, osteoporosis agent, antioxidant
7.It used in the production of sulfite cellulose ester, sodium thiosulfate, organic chemicals, such as bleaching fabrics
