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Changsha weichuang chemical co.ltd

 
 
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potassium metabisulfite food grade 

  Category : Chemicals->Chemical->POTASSIUM CHLORIDE

     
potassium metabisulfite food grade
 
 
       

  Product Specification
 
  Model No:      97
  Country  CN
  Color  white
  Packing  25kg per woven bag, linned with plastic bag, or by user's request.
  Minimum Order  10mt
  Payment Term  t/t or l/c

 

    Product Detail
  1.Name: potassium metabisulfite food grade
molecular formula: K2S2O5=222.326
molecular weight: 222.33
CAS Number: 16731-55-8

2.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.


3.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.


4.Packing
25kg per woven bag, linned with plastic bag,
or by user's request.


5.specification


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

   


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