INDUSTRY GRADE SODIUM METABISULFITE 97.2%

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Loading Port:
Qingdao
Payment Terms:
TT OR LC
Min Order Qty:
20 m.t.
Supply Capability:
3000 m.t./month

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Product Description:

pecification For Food Grade and Industry Grade :

 

Item

Quality Index

Food Grade

Industry Grade

Purity ( As Na2S2O5)

98.0% min

96.0% min

Sulfur Dioxide( SO2)

65.0% min

65.0% min

Arsenic ( As )

0.0002% max

-

Heavy metals ( As Pb )

0.0005% max

-

Selenium (Se )

0.0005% max

-

Iron (Fe)

0.001% max

0.002% max

Water insoluble

0.02% max

0.05% max

PH value :

4.0-4.8

4.0-4.8

Remark :

Conformed with FCC V and E 223 Standard

 

Specification for Pharmaceutical Grade and Photo Grade

Item

Quality Index

Pharmaceutical Grade

Photo Grade

Purity ( As Na2S2O5)

98.0% min

98.0% min

Sulfur Dioxide( SO2)

65.0% min

65.0% min

Thiosulphate ( As S2O3) :

0.05 % max

0.05% max

Chloride ( As CL-) :

30 ppm max

50ppm max

Arsenic ( As ) :

1ppm max

1ppm max

Lead ( Pb ) :

1 ppm max

2ppm max

Copper (Cu) :

1 ppm max

1ppm max

Iron (Fe ) :

5 ppm max

5ppm max

Mercury (Hg) :

0.1ppm max

1ppm max

Chromium (Cr) :

1 ppm max

-

Selenium (Se ) :

1 ppm max

5ppm max

Zinc (Zn)

1 ppm max

1ppm max

Cadmium (Cd )

1ppm max

-

Nickel (Ni)

1ppm max

-

Na2SO3 + Na2SO4

1.5% max

-

PH value :

4.0-4.8

4.0-4.8

Remark :

Conformed with USP standard

 

Application:

(1) Food Grade: Bleach agent (e.g. candies, cake, bamboo shoots, etc); Loose agent (e.g. bread, cracker etc); Antiseptic and germicide (e.g. fruit juice, tinned food, brews, the cereals food is defended storage etc); Inhibitor and freshen agent (e.g. day lily, seafood, fruit and vegetable etc).

(2) Industry Grade: Mordant of printing and dyeing; Dechlorinate of textile after bleaching; Sulphonated agent and reducer of chemical industry and pharmacy; Bleach of paper pulp, bamboo and timber bleach of Stap; Treatment agent of waste water; Rubber solidifying agent Perfume industry is served as hydro carbon perfume aldehyde 
The hide profession employ to do to molt dose and pliable dose and wearproof dose; sewage treatment, and so on .

(3) Pharmaceutical Grade: In chemical synthesis in the production of acrylic fibre, vitamin K, vitamin A, pharmaceutical intermediates, etc.

(4) Photo Grade: The sensitize industry is served as the developing agent reductant and the protection of fixing bath dose.

Storage: Store the product in a dry and cool place.

 


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