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Commission Regulation (EU) No 231/2012Show full title
Commission Regulation (EU) No 231/2012 of 9 March 2012 laying down specifications for food additives listed in Annexes II and III to Regulation (EC) No 1333/2008 of the European Parliament and of the Council (Text with EEA relevance)
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- 2012 No. 231
- ANNEX
- E 339 (iii) TRISODIUM...
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E 339 (iii) TRISODIUM PHOSPHATE
| Synonyms | Sodium phosphate; Tribasic sodium phosphate; Trisodium orthophosphate |
| Definition | Trisodium phosphate is obtained from aqueous solutions and crystallises in the anhydrous form and with 1/2, 1, 6, 8 or 12 H2O. The dodecahydrate always crystallises from aqueous solutions with an excess of sodium hydroxide. It contains ¼ molecule of NaOH |
| Einecs | 231-509-8 |
| Chemical name | Trisodium monophosphate; Trisodium phosphate; Trisodium orthophosphate |
| Chemical formula | Anhydrous: Na3PO4 Hydrated: Na3PO4 nH2O (n = 1/2, 1, 6, 8, or 12) |
| Molecular weight | 163,94 (anhydrous) |
| Assay | Sodium phosphate anhydrous and the hydrated forms, with the exception of the dodecahydrate, contain not less than 97,0 % of Na3PO4 calculated on the dried basis. Sodium phosphate dodecahydrate contains not less than 92,0 % of Na3PO4 calculated on the ignited basis P2O5 content between 40,5 % and 43,5 % on the anhydrous basis |
| Description | White odourless crystals, granules or crystalline powder |
| Identification | |
|---|---|
| Test for sodium | Passes test |
| Test for phosphate | Passes test |
| Solubility | Freely soluble in water. Insoluble in ethanol |
| pH | Between 11,5 and 12,5 (1 % solution) |
| Purity | |
| Loss on ignition | When dried at 120 °C for two hours and then ignited at about 800 °C for 30 minutes, the losses in weight are as follows: anhydrous not more than 2,0 %, monohydrate not more than 11,0 %, dodecahydrate: between 45,0 % and 58,0 % |
| Water insoluble matter | Not more than 0,2 % on the anhydrous basis |
| 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 |
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