China High Quality for Sodium Sulphite Anhydrous 96% Na2so3 Industrial Grade, Find details about China Sodium Sulphite Anhydrous, Anhydrous from High Quality for Sodium Sulphite Anhydrous 96% Na2so3 Industrial Grade
| Molecular Formula | Na2SO3 |
| Molecular weight | 126.04 |
| Appearance | white or yellowish powder |
| PH valune | 9~9.5(alkaline) |
| Solubility | at 40 ºC, the highest solubility is about 37.4g/100 ml of water. |
| Oxidizability | oxidize to sodium sulfate when contacting with air. |
| Decomposabilty | decompose into sodium sulphide at high temperature |
| Ratio | 2.633 (15.4ºC) |
| Refractive Index | 1.565 |
(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) Photo Grade: In the photographic industry as component of developer bath .
(3) Pharmaceutical Grade : pharmaceutical industry for the production of chloroform, benzene and formaldehyde phenylpropanoid Sulfone
Specification:
Item | Super grade | First grade |
Assay | 97%min | 96%min |
Fe | 0.003%max | 0.005%max |
Water insoluble | 0.02%max | 0.03%max |
Na2CO3 | 0.1%max | 0.4%max |
H2SO4 | 2.5%max | Not test |
NaCl | 0.1%max | Not test |