| Name of index | GB17203-1998 | FCC-4 | USP-23 |
| Appearance | White crystalli-ne powder | White crystalli-ne powder | White crystalline powder |
| Content, % | 98.0-100.5 | 97.5-100.5 | 97.0-100.5 |
| As≤% | 0.0003 | - | 0.0003 |
| Fluoride,≤% | 0.003 | 0.003 | 0.003 |
| Heavy metals(As Pb) ,≤% | 0.002 | 0.002 | 0.002 |
| Loss on drying,% | 10.0-13.3 | 10.0-14.0 | 10.0-13.3 |
| Acid-insoluble substance,≤% | 0.2 | - | 0.2 |
| Clear grade | Accord with the test | - | - |
6. Usage: To act as chelant, buffer, coagulant and calcareous intensifying agent in food industry. It is chiefly used in bakery, dairy and beverages industries.
7. Packing: In 25kgs net paper bags lined with PP bags.
8. Storage and transport: To be stored in a dry and ventilative warehouse. Handled with care; Kept away from moisture, heat and poisonous substances.transport andloadingunloading, it should be handled with care so as to avoid damage to bags; kept away from water and moisture, stored separately from poisonous substances.