Sodium sulphite anhydrous Na2SO3 manufacturer food/tech grade 97% 96% CAS NO.7757-83-7

application:

1>bleaching agent for paper pulps ;

2>waste water treatment；

3>reducing and sulphonating agent for chemical synthesis ；

4>bleaching agent for textiles；

5>colors stripper and deoxidization ;

6>floating agent for mining industry;

7>auxiliary chemical in tanning process .

package:

1>25kg/50kg compound plastic woven bag with inner polythene liner ;

2>1000kg jumbo bags;

3>any other particular requirements to the package can be discussed.

shelf life: one year.

storage & handling:

1>store the product in a cool and dry place；avoid contact sunshine;

2>water and moisture;

3>avoid contact with strong acid,oxidants or poisonous substances;

4>exposure to moisture will make it oxidze easily to sodium sulphate;

5>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 <0.00%2 <0.005% <0.005%

waterinsoluble matter <0.02% <0.05% <0.05%

sodium sulfate(na2so4) <2.5% --------- ----------

nacl <0.1% ---------- ---------