Description
Potassium aluminium sulphate is a hydrated double salt of minimum 99 % purity in Ph.Eur. quality, with CAS number 7784-24-9 and empirical formula KAl(SO₄)₂ · 12 H₂O. The compound has a molar mass of 474,39 g/mol and a density of 1,75 g/cm³, and carries EG number 233-141-3. It is This alum salt is applied in buffer systems, precipitation steps, and other inorganic procedures that require a pharmacopoeia-grade reagent. The material comes from manufacturer Carl ROTH within the salts in pharmacopoeia quality range. The min. 99 % assay and Ph.Eur. designation support work where documented purity matters. Plastic packaging protects the solid during storage and dispensing. Molar mass, density, and full identity data aid method development and quality records. provides an economical quantity for laboratories that regularly prepare alum solutions or use potassium aluminium sulphate as a process chemical.
This article is part of Inorganic salts, in Inorganic chemicals.
Key features
- Appearance: fine, white crystals
- Assay: 99.0-100.5 %
- null: 43.0-46.0 %
- Appearance of solution: complies
- pH value (10 % in H2O): 3.0-3.5
- Ammonium (NH4): ≤0,2 %
- Iron (Fe): ≤0,01 %
- Heavy metals (as Pb): ≤0,002 %
- CAS number: 7784-24-9
- Pack sizes: 500 g, 1 kg, 5 kg
- EG nr.: 233-141-3
- Purity: min. 99 %, Ph.Eur.
- Empirical formula: KAl(SO₄)₂ · 12 H₂O
- Molar mass: 474,39 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about Potassium aluminium sulphate, min. 99 %, Ph.Eur., 500 g, plastic
What is this article?
Potassium aluminium sulphate, min. 99 %, Ph.Eur., 500 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.
Which category should I open next?
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.
What should I check before I order?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.