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Disodium Phosphite
IDENTIFICATIONSynonyms: Disodium phosphite Pentahydrate; Na2HPO3; Na2HPO3.5H2O; Phosphonic acid disodium salt; Disodium hydrogen Phosphite Pentahydrate; Sodium Phosphite Dibasic Pentahydrate
CAS No.:13517-23-2: anhydrous 13708-85-5
EC No.:
Molecular Formula: Na2HPO3.5H2O
Molecular Weight: 216.04
Density:
M.p.: °C
B.p.: °C (anhydrous)
Solubility: Soluble in water
Disodium phosphite is made by reaction between sodium hydroxide and phosphorous acid:
2NaOH + H3PO3 + 3H2O= Na2HPO3.5H2O
APPLICATIONDisodium phosphite pentahydrate is mainly used as a reducing agent to reduce metal salts into metal elements
SPECIFICATION| Appearance | white crystalline granular |
|---|---|
| Content | 98.0% min. |
| Chlorides | 0.02% max. |
| Sulphates | 0.08% max. |
| Iron | 25 ppm max. |
| Heavy Metals as Pb | 25 ppm max. |
50lbs, 25kgs, 500kg, 1000kgs bag
Disodium Phosphite pentahydrate is NOT regulated by UN as hazardous goods.
Keep bags tightly closed in dry and cool place, avoid direct sun-light.
Avoid contact with skin and eyes.
Avoid breathing dust.
Keep clear from drains.