Package: 25 kg in white plastic bag with a weaving bag outside, or according to customer's requirement.

Uses : It is used in dyeing industry as deoxidizer and bleaching agent for a variety of cotton fabric treating and scouring, which can prevent fabrics from local oxidation and deterioration of fibre s

Molecular Structure:

Product description:

 Name:  Sodium Sulfite( Industrial Grade)  

Physical and chemical properties: 
White crystalline or powder form; triangular prism crystal shape; alkaline water solution with pH at 9 – 9.5; The highest water solubility is about 28% with temperature at 33.4°C. When exposed to air, it is oxidized to form sodium sulfate. When heated to high temperature, it decomposes to form sodium sulfide; Density: 2.633(15.4°C), Refractive Index: 1.565; Molecular Weight: 126.04.   

 

Specification:

Item	Value
	Top-grade	First grade
sodium sulfite(Na2SO3)%≥	98	97
Fe,%≤	0.003	0.003
water-Insoluble%≤	0.01	0.02
Free alkali(as Na2CO3),%≤	0.001	0.1
Sulfate(as Na2SO4),%≤	1.2	2.5
Chloride(as NaCl),%≤	0.003	0.1

 

Application: 
It is used in dyeing industry as deoxidizer and bleaching agent for a variety of cotton fabric treating and scouring, which can prevent fabrics from local oxidation and deterioration of fibre s

 

trength. In photographic industry it is used as a reagent. In organic industry it is used as reducing agent in production of m-phenylenediamine, 25 - bared oxazolone, amino salicylic acid, etc. Textile industry uses it as a stabilizer for synthetic fibre. Other applications include various uses in paper mills, electronic industry, water treatment, etc.