sodium sulphite CAS： 7757-83-7

 Package:25kg/50kg compound plastic woven bag with inner polythene liner ; 1000kg Jumbo bags,Any other particular requirements to the package can be discussed.

Shelf Life: one year

Application:bleaching agent for paper pulps ;waste water treatment；reducing and sulphonating agent for chemical synthesis ；bleaching agent for textiles；colors stripper and deoxidization ;floating agent for mining industry; auxiliary chemical in tanning process .

Storage & handling:Store the product in a cool and dry place；avoid contact sunshine ，water and moisture； avoid contact with strong acid,oxidants or poisonous substances。 Exposure to moisture will make it oxidze easily to sodium sulphate . Not store it for a long time .

Product Specification:

ITEM	FOOD GRADE	TECH GRADE	TECH GRADE
Na2SO3	> 97%	> 96%	> 93%
FREE ALKALI	< 0.1%	< 0.4%	< 0.4%
IRON	< 0.003%	< 0.002%	< 0.002%
WATER INSOLUBLW MATTER	< 0.02%	< 0.05%	< 0.05%
SODIUM SULFATE(Na2SO4)	< 2.5%	…………..	………….
NaCl	< 0.1%	……………	…………..