• No1 : World’s Leading Industrial Solution Provider Red Sailing
  • info@redsailing.net
No.41 Suzhou Industrial Park, Suzhou,

Jiangsu Province, China,


Troll Free Number

Sodium Hydrosulphite

Sodium Hydrosulphite

Product Name: Sodium hydrosulfite
Synonyms: Sodium dithionite hydrate; Sodium hydrosulphite; Sodium dithionite; disodium dithionite
Purity: 70%, 85%,88%,90% min.
Appearance free-flowing white crystalline powder
CAS RN.: 7775-14-6
EINECS: 231-890-0
Molecular Weight: 174.1071
Molecular Formula: Na2O4S2
Melting Point(℃): 300℃ (dec.)
Water Solubility: 250 g/L (20℃)
Price :



Sodium Hydrosulphite 90% min
Water insoluble 0.1% max
Sodium thiosulfate: Na2S2O3 1.3% max
Sodium metabisulfite: Na2S2O5 5-7
Sodium bisulfite:NaHSO3 0.5% max
Sodium carbonate: Na2CO3 0.6-2%  max
Sodium formate: HCOONa 0.5% max
Zn 0.0001% max
Fe 0.003% max

Properties: The bulk specific weight is 0.7-1.0g/m3 , dissolve in water, slightly dissolve in ethanol. Give off heat and cause combustion easily. Spontaneous decomposition occurs when the temperature is higher than 85℃, heats up to 190℃cause detonation. Self-ignition point is 250℃.

Usage: strength oxidant and is used as bleaching agent for textile and papermaking industry, as synthetic for medicine-making, as absorbent for analysis chemical, and as flotation agent of nonferrous color metal for metallurgical industry

Grade: Food grade, Industrial grade

15130 reviews for Sodium Hydrosulphite