| CAS No.: | 7758-87-4 |
|---|---|
| Formula: | Ca3o8p2 |
| EINECS: | 231-840-8 |
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| Name of index | FCC-V | E 341 (ii) | USP-32 |
| Description | White crystal or granular, granular powder or powder | ||
| Assay, % | 97.0-105.0 | 98.0--102.0(200ºC, 3h) | 98.0-103.0 |
| P2O5 Content(Anhydrous basis), % | -- | 50.0--52.5 | -- |
| Identification | Pass test | Pass test | Pass test |
| Solubility tests | -- | Sparingly soluble in water. Insoluble in ethanol | -- |
| Fluoride, mg/kg ≤ | 50 | 50(expressed as fluorine) | 50 |
| Loss on ignition, (After ignition at 800ºC±25ºC for 30minutes), % | 7.0-8.5 (Anhydrous) 24.5-26.5 (Dihydrate) | ≤8.5 (Anhydrous) ≤26.5 (Dihydrate) | 6.6-8.5 (Anhydrous) 24.5-26.5 (Dihydrate) |
| Carbonate | -- | -- | Pass test |
| Chloride, % ≤ | -- | -- | 0.25 |
| Sulphate, % ≤ | -- | -- | 0.5 |
| Arsenic, mg/kg ≤ | 3 | 1 | 3 |
| Barium | -- | -- | Pass test |
| Heavy metals, mg/kg ≤ | -- | -- | 30 |
| Acid-insoluble substance, ≤% | -- | -- | 0.2 |
| Organic volatile impurities | -- | -- | Pass test |
| Lead, mg/kg ≤ | 2 | 1 | -- |
| Cadmium, mg/kg ≤ | -- | 1 | -- |
| Mercury, mg/kg ≤ | -- | 1 | -- |
| Aluminium | -- | Not more than 100mg/kg for the anhydrous form and not more than 80mg/kg for the dihydrated form (only if added to food for infants and young children). Not more than 600 mg/kg for the anhydrous form and not more than 500mg/kg for the dihydrated form (for all uses except food for infants and young children). This applies until 31 March 2015. Not more than 200 mg/kg for the anhydrous form and the dihydrated form (for all uses except food for infants and young children). This applies from 1 April 2015. |
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