sodium metabisulphite / sodium metabisulfite 97% manufacturer CAS 7681-57-4 food /tech grade CAS NO.7681-57-4

Name：

Sodium Metabisulphite

Chemical formula：

Physical appearance：

White powder or small crystalline particles.

Quality standard：

GB1893-1998

Description：

Application:

1>Bleaching agent for textile fibres;

2>Colors stripper and dechlorination;

3>Preparation of Indigo Vat Dye;

4>Solubilizing and acidyfing agent for leather industries ;

5>Bleaching agent forpaper pulps;

6>Preservative and sterilisation agent for food industries.

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 :half one year.

Storage & handling:

1>Store the product in a cool and dry place;

2>Prevent from direct sunlight,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>Do not store it for long time.

Product Specification:

                                       TECH GRADE     FOOD GRADE

NA2S2O5                            >96.5%          >97.0%

SO2                                      >65%              >65%

FE                                        <0.005%          <0.003%

WATER INSOLUBLE        <0.05%           <0.05%

HEAVY METAL(PB)        <0.001%          <0.001%

AS                                      <0.0003%       <0.0001%