Description
Potassium aluminium sulphate is a crystalline inorganic double salt offered at a minimum assay of 98 % in p.a. and ACS quality for analytical laboratory use. It is defined by CAS number 7784-24-9, the empirical formula KAl(SO₄)₂ · 12 H₂O, a molar mass of 474,39 g/mol and a density of 1,75 g/cm³, giving a well-characterised dodecahydrate for quantitative work. The reagent is In salts-for-analysis workflows this alum supports precipitation studies, mordant-related experiments and general inorganic reagent preparation where composition control is essential. Supplied in p.a./ACS grade from manufacturer Carl ROTH, the material aligns with demanding analytical expectations without unnecessary formulation additives. European inventory identification is given by EG nr. 233-141-3. Consistent purity and clear chemical identity help laboratories maintain reproducible results in teaching, quality control and research settings that depend on reliable inorganic salts.
This article is part of Inorganic salts, in Inorganic chemicals.
Key features
- Assay (compl.): 98.0-102.0 %
- pH value (10 % in H2O): 3.0 - 3.5
- In H2O insoluble matter: ≤0,005 %
- Chloride (Cl): ≤0.0005 %
- Ammonium (NH4): ≤0,005 %
- Lead (Pb): ≤0,0005 %
- Cadmium (Cd): ≤0,0005 %
- Iron (Fe): ≤0.001 %
- Copper (Cu): ≤0,0005 %
- Sodium (Na): ≤0.02 %
- CAS number: 7784-24-9
- Pack sizes: 1 kg, 500 g, 2.5 kg, 100 g
- EG nr.: 233-141-3
- Purity: min. 98 %, p.a., ACS
- Empirical formula: KAl(SO₄)₂ · 12 H₂O
- Molar mass: 474,39 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Potassium aluminium sulphate, min. 98 %, p.a., ACS, 100 g, plastic
What is this article?
Potassium aluminium sulphate, min. 98 %, p.a., ACS, 100 g, plastic is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Inorganic salts, inside Inorganic chemicals, in Lab chemicals.
An inorganic salt is an ionic solid, a chloride, a sulfate, a nitrate, a phosphate. The degree of hydration changes the mass that contains one mole of the ion. Analytical grade limits the foreign ions. A hydrate and the anhydrous salt are not interchangeable by weight.
An inorganic chemical is a salt, an acid or base in solid form, a metal, an oxide, or an element. The waters of hydration are part of the formula: a hydrate and an anhydrous salt are different masses for the same ion. Trace metals matter when the salt will be used in analysis. Nanomaterials add particle size to the specification. Look the substance up on PubChem. Hazard classes are on ECHA, under the CLP Regulation and REACH. Transport of the dangerous ones is explained by the UNECE.
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The category is Inorganic chemicals. The sub-category is Inorganic salts. The catalogue is Lab chemicals.
Shelves beside this one are Metals, elements & oxides and Nanomaterials & quantum dots.
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