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  • Region :Organic chemicals and Derivatives
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  • Email :sales@yjchem.cn
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Details for China Sodium Metabisulfite

Sodium Metabisulfite 7631-99-4

Category :

Organic chemicals and Derivatives

Sodium Metabisulfite
CAS NO : 7631-99-4
EC NO : 231-554-3
MF : NaNO3
MW : 84.99
Specification : 97.2% min
Packing : In inner plastic bag, outside woven bag
Product description :

Property:?white or light yellow crystal powder, a strong smell of sulfur dioxide, relative density is 1.4, easy to dissolve in water and glycerin, water solution. It has acidity, and its solubility will become large while raising the temperature and is less to dissolve in ethanol.
Molecular Formula :Na2S2O5
Molecule Weight :190.12
CAS NO .:7681-57-4
Appearance :White Free Flowing Fine Crystal or Powder

Packing:Packed in 25kg plastic woven bag, 25kg Kraft paper bag, 25kg PE bag, 500kg/1000kg/1100kg/1200kg jumbo bag or as per the buyer's requirement.

Specification 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.

Packing photo:

1000kg Jumbo bag

25kg P.P woven bag

25kg Kraft paper bag

25kg PE bag

Uses : Sodium metabisulfite purposes: industry used in printing and dyeing, organic synthesis, printing, leather, pharmaceutical and other department. In the food processing as preservative, bleach...
Synonyms : Soda niter;Sodium nitrate for industrial use;cubicniter ;Natriumnitrat ;niter ;nitratedesodium ;nitratedesodium(french) ;nitrateofsoda;;nitratine;Nitricacid,sodiumsalt ;nitricacidsodiumsalt;
Molecular Structure : Sodium Metabisulfite 7631-99-4