Ammonium Ferric Sulphate Dodecahydrate 98.5% AR
Ammonium iron (III) sulphate dodecahydrate ; (Ferric Alum)
Product Code. |
00207 |
Grade |
AR |
Purity |
98.5% |
CAS No. |
7783-83-7 |
Molecular Formula |
NH4Fe(SO4)2.12H2O |
Molecular Weight |
482.19 |
H.S.Code |
2833.29900 |
Shelf Life |
60 Months |
Physical Properties
| Physical state at 20 °C |
Solid |
Colour |
Pale violet crystals |
Odour |
Odorless |
| pH value |
1 |
Melting point/ Freezing point [°C] |
39 - 41 °C |
Density [g/cm3] |
1.71 |
| Solubility in water [% weight] |
482.2 g/l at 20 °C |
Packaging
Specification
| Appearance | Pale violet crystals |
| Assay (iodometric) | 98.5 - 102% |
| Insoluble matter | Max 0.01% |
| Chloride (Cl) | Max 0.001% |
| Ferrous ion (Fe2+) | Passes test (about 0.001%) |
| Nitrate (NO3) | Max 0.01% |
| Calcium (Ca) | Max 0.01% |
| Magnesium (Mg) | Max 0.005% |
| Potassium (K) | Max 0.005% |
| Sodium (Na) | Max 0.02% |
| Copper (Cu) | Max 0.003% |
| Zinc (Zn) | Max 0.003% |
| Substance not precepitated by NH3 (as SO4) | Max 0.05% |
Safety Information and Hazard Symbols
Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H315-H319
Precaution Statement: P305 + P351 + P338