88% 90% 85% 74% 70% Sodium Hydrosulphite; 7775-14-6; Sodium Hydrosulfite; Sodium Dithionite,

• CAS No.: 7775-14-6
• Formula: Na2s2o4
• EINECS: 231-890-0
• Model NO.: 88%, 90%, 85%, 74%, 70%
• Certification: ISO
• Purity: 70%~90%
• Type: Sodium Hydrosulphite
• Appearance: Powder
• Grade Standard: Industrial Grade
• Transport Package: 50kg/Drum
• Specification: 70%, 74%, 85%, 88%, 90%
• Trademark: SINOCHEM
• Origin: China
• HS Code: 28311010
• Production Capacity: 50000mt/Year

Product Description

Product: Sodium Hydrosulphite
Syonym: Sodium Hydrosulfite, Sodium Dithionite
CAS:      7775-14-6
EINECS:   231-890-0
Molecular Formula: Na₂S₂O₄
Molecular Weight: 174.1071                                           
Molecular Structure:                                                                                     Appearance: Free-flowing white crystal powder
Bulk Density: 0.9
Melting Point: 300ºC(Decomposes)
Solubility: Easily soluble in water, insoluble in alcohol
Ordor: None or slightly smell of sulfur dioxide
Grade:

Grade	Na2S2O4 Content(Min)
Low Purity	70% Min. 74% Min. % 80% Min.
Standard Purity	85% Min. % 88% Min.
High Purity	90% Min.

Application: Strong Reducing Agent
Dyeing, Printing and Stripping of Vat Dyes in Textiles.
Bleaching Sugar, Soap, Oils, Minerals Wood Pulp, Ceramics and Chemicals. Synthetic Rubbers.
Discoloration of Effluent.
Paking: 15/25/50/100/200kg net in iron drum with double plastic liners
Storage: Keep in closed or covered containers when not in use. Store in cool dry place with adequate ventilation. Do not store near oxidants, acids or combustible materials.
Safety Precautions: In case of fire, use sand or use Carbon Dioxide fire extinguisher. Do not use water.
Shelf Life: 12 months
Warning: Flammable! May spontaneously ignite in moist air or upon contact with water.