Manganese dihydrogen phosphate Mn(H2PO4)2•2H2O
Name: Manganese dihydrogen phosphate
CAS Number: 18718-07-5
Molecular formula: Mn(H2PO4)2•2H2O
Molecular weight: 248.91
Properties: Mn(H2PO4)2•2H2O is characterized by crystalline formations ranging from white to gray-white or slightly reddish. It possesses strong hygroscopic properties, readily absorbing moisture. It is soluble in water and undergoes hydrolysis, resulting in the formation of a flocculent precipitate. The aqueous solution exhibits acidity. It is insoluble in alcohol.
Specification
| Test Item | Test Result |
|---|---|
| Phosphoric Acid and Phosphate (as P2O5, %) | 46—52 |
| Manganese (Mn, %) ≥ | 14.5 |
| Iron (Fe, %) ≤ | 0.5 |
| Total Acidity (milliliters of 0.1N NaOH consumed by 0.3 sample) ≥ | 25.0 |
| Insoluble Matter in Water (%) ≤ | 6.0 |
| Sulfate (as SO42—, %) ≤ | 0.07 |
| Loss on Heating (%) ≤ | 19.0 |
Applications
It is primarily utilized as a phosphating agent for rust prevention in steel and iron. Particularly suitable for large machinery, when treated with phosphating and coated with paint, it prevents atmospheric corrosion and enhances insulation properties of the equipment.
Packaging
The woven bags of 25kg, 50kg, and 1000kg are lined with plastic bags