Sodium Sulphite Anhydrous

High quality for Sodium Sulphite Anhydrous  96% Na2so3 industrial grade 



Product description:

Molecular FormulaNa2SO3
Molecular weight126.04
Appearancewhite or yellowish powder
PH valune9~9.5(alkaline)
Solubilityat 40 ºC, the highest solubility is about 37.4g/100 ml of water.
Oxidizabilityoxidize to sodium sulfate when contacting with air.
Decomposabiltydecompose into sodium sulphide at high temperature
Ratio2.633 (15.4ºC) 
Refractive Index1.565


Usage

(1) Industry Grade : Used in Dyeing and printing Industry ,as dechlorinating agent and bleaching agent,  in leather and tanning industry as bleaching agent , developer agent , reductant agent , stabilizer agent , or used in papermaking, electronic and water treatment industry.  
 
(2) Photo Grade: In the photographic industry as component of developer bath  .
 
(3) Pharmaceutical Grade : pharmaceutical industry for the production of chloroform, benzene and formaldehyde phenylpropanoid Sulfone

Specification:

Item

Super grade

First grade

Assay

97%min

96%min

Fe

0.003%max

0.005%max

Water insoluble

0.02%max

0.03%max

Na2CO3

0.1%max

0.4%max

H2SO4

2.5%max

Not test

NaCl

0.1%max

Not test