Table E.23.
Specifications for sodium polyphosphate (E 452(i) II. insoluble polyphosphate) according to Commission Regulation (EU) No 231/2012 and as INS 452(i) according to JECFA (2012a,b)
| Commission Regulation (EU) No 231/2012 | |
|---|---|
| Assay | P2O5 content not less than 68.7% and not more than 70.0% |
| Description | White crystalline powder |
| Identification | |
| Test for sodium | Passes test |
| Test for phosphate | Passes test |
| Solubility | Insoluble in water, soluble in mineral acids and in solutions of potassium and ammonium (but not sodium) chlorides |
| pH | About 6.5 (1 in 3 suspension in water) |
| Purity | |
| Fluoride | Not more than 10 mg/kg (expressed as fluorine) |
| Arsenic | Not more than 1 mg/kg |
| Cadmium | Not more than 1 mg/kg |
| Lead | Not more than 1 mg/kg |
| Mercury | Not more than 1 mg/kg |