potassium metabisulfite

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Selling leads
potassium metabisulfite
Posting date : Sep 16, 2014
Membership
Free Member Scince Oct 12, 2011
FOB Price
1660USD/MT
Min. Order Quantity
20mt
Supply Abillity
5000MT/Month
Port
Qingdao Port
Payment Terms
T/T and L/C
Package
25kg per woven bag, linned with plastic bag
Keyword :
Category
Contact
Amanda Liu
Selling Leads Detail
Company Info
 
Quick Detail
Place of Origin
China [CN]
Brand Name
info@thdchem.com
HS-CODE
2832-20
Package & Delivery Lead Time
Package
25kg per woven bag, linned with plastic bag
Delivery Lead Time
two weeks upon receipt of advance payment
Detailed Description
Pls contact:info@thdchem. com

1.>Name: potassium metabisulfite

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,

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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