potassium sulfite for photographic grade 45%

Brief Description
CAS No.: 10117-38-1 MF: K2SO3 Place of Origin: Shandong China (Mainland)
Purity: 45%min. Classification: General Reagents 
Delivery Terms & Packaging
Packaging Detail:Plastic barrel package: 250 kg per drum (200L) and 1500kg per barrel (IBC drum) or in accordance with user's requirements.
Delivery Detail:10 DAYS AFTER CONTRACT DATE
Specifications
potassium sulfite for photographic grade 45%

potassium sulfite 45%
for photographic grade
Plastic barrel package: 250 kg per drum (200L) and 1500kg per barrel.

Potassium sulfite 45%

 

executive standard: European Photographic grade E225

molecular weight and molecular formula: K2SO3=158.25  

CAS number:10117-38-1

Technical index

Test item

Unit

Specification

Test method

K2SO3

g/100g

44.5-45.5

ISO 5990-1996(E)

density(20°C)

kg/l

1.445-1.460

ISO 5990-1996(E)

appearance

 

colourless or light yellow transparent liquid

ISO 5990-1996(E)

K2S2O3

g/100g

0.01

spectrophotometry

pH value(10%solution)

 

9.0-10.0

ISO 5990-1996(E)

heavy metal(measured by Pb)

mg/kg

 10

AES

Fe

mg/kg

5

AAS

reaction with NH3-AgNO3

 

                          qualified

ISO 5990-1996(E)

KCl

g/100g

                               0.3

IC

sulphate(measured by K2SO4)

g/100g

10.5

IC

Product usage

The products could be used as dechlorination agent in the production of potassium hydroxide ion-exchange membrane and developing protective agent in photographic industry. It could also be used in the textile fabrics for bleaching, calcium removing reagent in tanning industry and as the preservative for food industry.

 

Product package             

Plastic barrel package: 250 kg per drum (200L) and 1500kg per barrel (IBC drum) or in accordance with user's requirements.