Potassium Alum
Potash Alum, also known as potassium aluminum sulfate.
Potash Alum, also known as potassium aluminum sulfate, is a chemical compound with the formula (KAl(SO4)2.12H2O). It's a type of alum that's commonly used in medicine, water purification, and other applications.
Potassium alum is commonly used in water purification, Leather Tanning, Dyeing, Fireproof Textiles, and Baking Powder.
| Molar Mass |
258.192 g/mol (anhydrous)
474.37 g/mol (dodecahydrate) |
| Density | 1.725 g/cm3 |
| Melting Point | 92 to 95 °C (198 to 203 °F; 365 to 368 K) |
| Boiling Point | 200 °C (392 °F; 473 K) |
| Test | Specification | Result |
| Appearance (Color) | White | White |
| Appearance (Form) | Powder | Powder |
| Solubility (Color) | Colorless | Colorless |
|
Solubility (Turbidity) 0.5M, H2O |
Clear to Slightly Hazy | Clear |
| Calcium (Ca) | _< 0.0005 % | < 0.0005 % |
| Copper (Cu) | _< 0.0005 % | < 0.0005 % |
| Iron (Fe) | _< 0.001 % | 0.001 % |
| Magnesium (Mg) | _< 0.005 % | < 0.005 % |
| Sodium (Na) | _< 0.02 % | < 0.02 % |
| Phosphorus (P) | _< 0.0005 % | < 0.0005 % |
| Lead (Pb) | _< 0.001 % | < 0.001 % |
| Zinc (Zn) | _< 0.0005 % | < 0.0005 % |
|
Chloride (Cl) < or = 0.0005% |
Pass | Pass |
| Insoluble Matter | _< 0.005 % | 0.002 % |
| Ammonia (NH4) | _< 0.005 % | 0.002 % |
|
Purity by Titration by EDTA |
_> 98.0 % | 99.8 % |
| Form | Liquid |
| Colour | Dark brown |
| Odour | Hydrocarbon-like. |
| Odor Threshold | No Information Available |
| pH | Not Applicable |
| Melting Point | < -40 °F (< -40 °C) |
| Boiling Point | 348.8 °F (176 °C) |
| Flash Point | 150.1 °F (65.6 °C) Pensky-Martens Closed Cup |
| Evaporation Rate | < 1 (Ether =1) |
| Flammability (solid, gas) | Not Applicable |
| Explosive limits Lower / Uper | Not Available |
| Vapour pressure | < 5 mm Hg @ 21°C |
| Vapour Density | > 1 (Air =1) |
| Secific Gravity | 1.42 |
| Decomposition Temperature | No information available |
| Partition coefficient | No data available |
| Autoignition Temperature | No data available |
| Solubility in Water | Not Soluble |
| Viscosity | < 400 cSt @ 60°F |
| Explosive properties |
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Fire Retardant
