| ≥1 piece |
White powder; Soluble in water but insoluble in ethanol; Relative density 2.45g/cm3and melting point 890℃; Deliquescent in the open air. Its aqueous solution shows weak alkalinity and is stable at 70 ℃ but will be hydrolyzed into di-sodium phosphate when boiled.
| ITEM | STANDARD |
| NaH2PO7 | >95% |
| PH at 1% | 9.9-10.7 |
| Loss of Ignition | <0.5% |
| Heavy Metal (As Pb) | <10 ppm |
| Cl- | <0.025% |
| Water insolubles | <0.20% |
| Fluoride (F) | <50ppm |
| Arsenic (As) | <3ppm |
| Size | 85% Min throu 100 Mesh |