| Appearance |
white to colorless crystalline powder |
| Assay (acidimetric; calculated on dried substance) |
99.5 - 101.4 % |
| Identity |
passes test |
| Appearance of solution (20 %; water) |
clear and colorless |
| In water insoluble matter |
≤ 50 mg/kg |
| pH-value (5 %; water) |
≤ 8.6 |
| Carbonate |
passes test |
| Bromide (Br) |
≤ 5 mg/kg |
| Chlorate |
≤ 40 mg/kg |
| Chloride (Cl) |
≤ 70 mg/kg |
| Fluoride (F) |
≤ 10 mg/kg |
| Iodide (I) |
≤ 40 mg/kg |
| Nitrate (NO₃) |
≤ 40 mg/kg |
| Nitrite (NO₂) |
≤ 40 mg/kg |
| Phosphate (PO₄) |
≤ 10 mg/kg |
| Sulfate (SO₄) |
≤ 100 mg/kg |
| Heavy metals (as Pb) |
≤ 5 mg/kg |
| Al (Aluminium) |
≤ 1 mg/kg |
| As (Arsenic) |
≤ 2 mg/kg |
| Ca (Calcium) |
≤ 50 mg/kg |
| Cu (Copper) |
≤ 10 mg/kg |
| Fe (Iron) |
≤ 10 mg/kg |
| Hg (Mercury) |
≤ 1 mg/kg |
| Na (Sodium) |
≤ 300 mg/kg |
| NH₄ (Ammonium) |
≤ 20 mg/kg |
| Pb (Lead) |
≤ 2 mg/kg |
| Se (Selenium) |
≤ 30 mg/kg |
| Zn (Zinc) |
≤ 25 mg/kg |
| Residual solvents (ICH Q3C) |
excluded by manufacturing process |
| Loss on drying (Silica gel) |
≤ 0.25 % |
| Odour and taste |
not tested/typical property |
| Conforms FCC,E501Conforms to the purity criteria on food additives according to the current European Commission Regulation. |
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