Alum ammonia extra pure
Description
Alum ammonia extra pure, commonly known as Ammonium Alum or Aluminium Ammonium Sulfate dodecahydrate, has the chemical formula
NH
4
Al(SO
4
)
2
⋅
12
H
2
O
NH
4
Al(SO
4
)
2
⋅12H
2
O.
Chemical Description
Chemical Formula:
NH
4
Al(SO
4
)
2
⋅
12
H
2
O
NH
4
Al(SO
4
)
2
⋅12H
2
O
Molar Mass: 453.32 g/mol (dodecahydrate)
Appearance: White crystalline powder or colorless crystals; odorless
Purity (Extra Pure Grade): ≥98–99%
Density: ~1.64–1.65 g/cm³
Solubility: Highly soluble in water and glycerol, insoluble in alcohol
Melting Point: 93.5°C (dodecahydrate form)
pH (aqueous): Typically slightly acidic, about 2.6–4.6 (varies with concentration)
Other Names: Ammonium alum, aluminium ammonium sulfate dodecahydrate, ammonia alum
Properties and Uses
Water Purification: Used as a coagulant for water treatment and purification.
Textile Industry: Mordant for dyeing and printing textiles.
Analytical Reagent: Employed in laboratories due to its high purity.
Medical and Cosmetic: Occasionally used as an astringent and in deodorants.
Food and Other Uses: Used in some food processes, as a pickling agent, and as a component in fireproofing and tanning.
If you need a catalog-style or technical specification sheet for “extra pure” grade, let me know.
Specifications
| Model No. | N-CH1148 |
|---|