ALUMINIUM POTASSIUM SULPHATE DODECAHYDRATE AR/ACS
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ALUMINIUM POTASSIUM SULPHATE DODECAHYDRATE AR/ACS
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Short Name: ALUMINIUM POTASSIUM SULPHATE DODECAHYDRATE
Other Names: Alum, Potassium alum, Potassium aluminum sulfate dodecahydrate
Conforms to BP, Ph Eur, USP
Chemical Specifications
Appearance : White crystalline powder
Assay (complexometric) : 99.0-100.5%
Identification : To comply USP, BP test
Appearance of solution : Passes test
Insoluble matter : Max 0.005%
pH (10% solution in water) : 3.0 -.3.5
Chloride (Cl) : Max 0.0005%
Ammonium (NH4) : Max 0.005%
Arsenic (As) : Max 0.0002%
Copper (Cu) : Max 0.0005%
Iron (Fe) : Max 0.0005%
Heavy metal (as Pb) : Max 0.001%
Sodium (Na) : Max 0.02%
Loss on drying (at 400°C) : 43 - 46%
| Basic | |
| CAS No. | 7784-24-9 |
| Grade | AR/ACS , Conforms to BP, (mesh size 12-16) |
| HS Code | 2833.3030 |
| Molecular Formula | AlK(SO4)2.12H2O |
| Molecular Weight | 474.38 |
| Purity | 99% |
| Shelf Life | 60 Months |
| Physical Properties | |
| Boiling point [°C] | Boiling point [°C] |
| Colour | Colour |
| Density [g/cm3] | Density [g/cm3] |
| Melting point/ Freezing point [°C] | Melting point/ Freezing point [°C] |
| Odour | Odour |
| pH value | pH value |
| Physical state at 20 °C | Physical state at 20 °C |
| Solubility in water [% weight] | Solubility in water [% weight] |
| Safety | |
| Safety Statement | 22-24/25 |