potassium sulfite for photographic grade 45%
CAS No.: 10117-38-1 | MF: K2SO3 | Place of Origin: Shandong China (Mainland) |
Purity: 45%min. | Classification: General Reagents |
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 |
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.