high purity chemical anhydrous sodium sulphite(Na2SO3) for bleach

Brand:aa

Product detail:

high purity chemical anhydrous sodium sulphite(Na2SO3) for bleach

 

Appearance: white crystal or powder
Density (g/cm3): 1.561
Solubility: Soluble in water, water solution is alkaline. indissolvable in ethanol
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	/	/

Packing:25kg/pp bag or per customer's request
Application:Used in artificial fiber stabilizer, fabric bleach, photographic contrast extravasation, dye bleaching deoxidizer, spices and dye reductant, paper lignin removal agent.