Potassium Metabisulfite

Potassium Metabisulfite
Product Id:
11215431816
Products Name:
Potassium Metabisulfite
CAS NO:
16731-55-8
Product category:
Preservative
Remarks:
[Molecular weight]: 222.33

 

[Executive standard]: european food grade  potassium metabisulfite E224
[Molecular formula]: K2S2O5=222.326
[Molecular weight]: 222.33
[CAS Number]: 16731-55-8
[Product characteristics]: The Product was colorless crystal or white crystalline powder with the relative density of 2.34 .The melting point was 150-190oC(decomposition). The product had a flavor of sulfur dioxide and soluble in water with acidic aqueous solution, it was not soluble in ethanol. Sulfur dioxide was released from acidic solution and oxidized to sulfate in the air.

[Usage]:
the product was used for the preparation of photographic developing solution, which was also used as food bleaching agents, preservatives, antioxidants .In addition, it could be used to retain freshness of wine, fruit juice, beer clarifying agent, fruits and vegetables, meat , grapes, as well as the non-cyanide silver plating.
1. For food Additive
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. For photographic
Promote the developer’s configurate.
3. For industry
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 stapk; Treatment agent of waste water; Rubber solidifying agent ;Perfume industry is served as hydrocarbon perfume aldehyde; The hide profession employ to do to molt dose and pliable dose and wearproof dose ,The sensitize industry is served as the developing agent reductant and the protection of fixing bath dose and so on; sewage treatment.

[Technical index]:
Test item
Unit
Specification
Test method
K2S2O5
g/100g
≥97.2
Acc.Fcc IV p.322
SO2
g/100g
≥56.0
calculation
K2S2O3
g/100g
≦ 0.1
ISO 3629-1996(E)
Na
g/100g
≦ 2
AAS
Cl
g/kg
≦ 0.5
IC
pH-value(10%solution)
-
3.8-4.8
RCA/Q-S-066
heavy metal(measured by Pb)
mg/kg
≦10
AAS
As
mg/kg
≦ 1
AAS
Cu
mg/kg
≦1
ICP-AES
Fe
mg/kg
≦5
ICP-AES
Hg
mg/kg
≦0.1
AAS(cold vapour)
Pb
mg/kg
≦1
ICP-AES
Se
mg/kg
≦1
AAS
Zn
mg/kg
≦ 1
ICP-AES
K2SO3 +K2SO4
mg/kg
excess material
calculation
[Product usage]:
the product was used for the preparation of photographic developing solution, which was also used as food bleaching agents, preservatives, antioxidants .In addition, it could be used to retain freshness of wine, fruit juice, beer clarifying agent, fruits and vegetables, meat , grapes, as well as the non-cyanide silver plating.
[Product package]:
25 kg per bag, composite bag lined with plastic bag, or by user's request.