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Potassium metabisulfite
executive standard: european food grade potassium metabisulfite E224
molecular formula: K2S2O5=222.326
molecular weight: 222.33
CAS Number: 16731-55-8
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.
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.
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 (food grade):
25kg plastic bag per net, 18000kg into 1*20FCL Container with pallets. or according to the buyer's requirements.
