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Sodium sulphate

Sodium sulphate

Price : under negotiation
Packaging Details : 25kg/bag
Delivery : by shipping
MOQ : as order
Place of Origin : china
Model Number : industry grade ,food grade ,photo grade ,pharmaceu
Category : Sulphate
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Sodium Sulphate
Specification for Industry Grade and Food Grade :
Item
Quality Index
Industry Grade
Food Grade
Purity ( As Na2SO3)
96.0% min
98.0% min
Sodium sulphate ( SO4)
2.0% max
1.0% max
Chlorides ( As NaCL)
0.5% max
0.1% max
Arsenic ( As )
-
0.0002% max
Heavy metals ( As Pb )
-
0.0005% max
Iron (Fe)
0.005% max
0.002% max
Water insolubles
0.05% max
0.02% max
Specification For Photo Grade and Pharmaceutical Grade
Item
Quality Index
Photo Grade
Pharmaceutical Grade
Purity ( As Na2SO3)
98.0% min
98.0% min
Sodium sulphate ( SO4 )
1.0% max
1.0% max
Chlorides ( As CL-)
0.05% max
0.05% max
Arsenic ( As )
0.0002% max
2ppm max
Lead ( As Pb)
0.0005% max
2ppm max
Iron (Fe)
0.001% max
5ppm max
Selenium ( Se)
0.0001% max
1ppm max
Zinc ( Zn)
0.0001% max
1ppm max
Copper ( Cu )
0.0001% max
0.1ppm max
Mercury ( Hg)
0.0001% max  
0.1 ppm max
Application  : 
(1) Industry Grade : Used in Dyeing and printing Industry ,as dechlorinating agent and bleaching agent,  in leather and tanning industry as bleaching agent , developer agent , reductant agent , stabilizer agent , or used in papermaking, electronic and water treatment industry.  
(2) Food Grade: In food industry as additive (E223) preservative, antioxidant and antimicrobic for fruits (dried, glazed and candled), vegetables (onions, potatoes, etc.), juices (citrus and grapes) and fish (shrimps and prawns). In  silage treatment as antifermentative. In  starch and sweeteners production as bacteriostatic.     
(3) Photo Grade: In the photographic industry as component of developer bath  .
(4) Pharmaceutical Grade : pharmaceutical industry for the production of chloroform, benzene and formaldehyde phenylpropanoid Sulfone
Packing: Packed in 25kg plastic woven bag, Kraft paper bag, PE bag, 500kg/1000kg/1100kg/1200kg jumbo bag or as per the buyer’s requirement

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