Aluminium Potassium Sulphate – 500 gram Packs

Aluminium Potassium Sulphate, commonly known as potassium alum or potash alum, is an inorganic double sulfate salt containing potassium, aluminium, and sulfate ions in a crystalline hydrated form. Its chemical formula is KAl(SO₄)₂·12H₂O, and it is recognized for its colourless to white crystalline appearance, water solubility, and acidic aqueous solutions. This compound is useful in educational chemistry practicals, crystal growth experiments, and investigations of inorganic salts and their properties. Aluminium Potassium Sulphate Laboratory Reagent is relevant to school and college chemistry laboratories, university teaching facilities, and research environments where the preparation and study of aqueous solutions, crystallization, and precipitation processes are required. Its suitability for a particular analytical method depends on the specified grade, product characteristics, and experimental requirements.

Product Specifications

Specification	Details
Appearance	Colourless crystals or white crystalline powder
Assay	99%
Chemical Name	Potassium aluminium sulfate dodecahydrate
Alternate Names	Potassium alum, potash alum, aluminium potassium sulphate dodecahydrate, potassium aluminium bis(sulfate) dodecahydrate
Molecular Formula	KAl(SO₄)₂·12H₂O
Empirical Formula	KAl(SO₄)₂·12H₂O
CAS Number	7784-24-9
Molecular Weight	474.39 g/mol
Grade	LR Laboratory Reagent

Key Features of Aluminium Potassium Sulphate

• Contains potassium, aluminium, and sulfate ions in a well-defined hydrated double-salt structure.
• Has the molecular formula KAl(SO₄)₂·12H₂O and a formula mass of approximately 474.39 g/mol.
• Forms characteristic crystalline solids suitable for supervised crystal growth and crystallization experiments.
• Dissolves in water and produces an acidic solution, making it useful for studying the behaviour of dissolved inorganic salts.
• Supports educational and research investigations involving solution preparation, crystallization, precipitation, and aqueous chemical equilibria.

Laboratory Applications of Aluminium Potassium Sulphate

• School chemistry practicals: Used in supervised experiments demonstrating the properties of inorganic salts, dissolution, and the formation of crystals.
• College and university experiments: Applied in recrystallization and crystal growth studies to examine how solution concentration, temperature, and cooling affect crystal formation.
• Analytical chemistry: Used to prepare aqueous solutions for selected investigations of aluminium and sulfate chemistry, where the reagent grade and method requirements are appropriate.
• Inorganic chemistry research: Supports investigations of double salts, ionic interactions, hydrolysis, and the behaviour of aluminium-containing solutions.
• Coagulation and precipitation studies: Can be used in controlled laboratory demonstrations investigating the role of aluminium salts in particle aggregation and clarification processes, with experimental conditions selected for the intended study.

Why Choose Lab Wale to Buy Aluminium Potassium Sulphate

Lab Wale provides a sourcing option for laboratory chemicals and scientific supplies used by schools, colleges, universities, research centres, and laboratory professionals. When purchasing Aluminium Potassium Sulphate, laboratories should consider the exact hydrate form, stated reagent grade, product specifications, and suitability for the intended experiment. Reviewing available technical and safety documentation helps support appropriate selection, handling, and storage. Choosing the correct chemical identity and grade is important for reproducible educational experiments and laboratory procedures.

Frequently Asked Questions About Aluminium Potassium Sulphate

What is Aluminium Potassium Sulphate used for in laboratories?

Aluminium Potassium Sulphate is used in crystal growth experiments, recrystallization studies, aqueous solution preparation, and investigations of inorganic salts. It can also support controlled demonstrations of coagulation and precipitation. Its suitability for quantitative analytical procedures depends on the method requirements and the reagent’s documented specifications.

What is the chemical formula and molecular weight of Aluminium Potassium Sulphate?

The formula of potassium aluminium sulfate dodecahydrate is KAl(SO₄)₂·12H₂O. Its molecular weight, more precisely called formula mass for this ionic compound, is approximately 474.39 g/mol. The twelve water molecules are part of the crystalline hydrate and must be included in calculations involving this chemical form.

What is the CAS number of Aluminium Potassium Sulphate?

The CAS Registry Number for potassium aluminium sulfate dodecahydrate, commonly called potassium alum, is 7784-24-9. This identifier refers to the hydrated compound rather than anhydrous potassium aluminium sulfate. Confirming the hydrate form is important when matching product specifications, preparing solutions, or calculating quantities for laboratory experiments.

Is Aluminium Potassium Sulphate suitable for educational and research laboratories?

It is suitable for many educational experiments and selected research applications involving crystallization, inorganic salts, and aqueous chemistry when its grade and specifications meet the method requirements. Laboratory personnel should assess the intended use before selection. Students should conduct experiments under appropriate supervision and follow established laboratory safety procedures.

How should Aluminium Potassium Sulphate be stored and handled safely?

Store the material in a tightly closed, clearly labelled container in a cool, dry, well-ventilated location, protected from contamination and excessive moisture. Avoid creating or inhaling dust and prevent contact with the eyes. Wear suitable laboratory PPE and consult the current Safety Data Sheet for product-specific handling, spill response, and disposal guidance.

Storage Conditions for Aluminium Potassium Sulphate

Store Aluminium Potassium Sulphate in a tightly closed, compatible container in a cool, dry, well-ventilated area at the temperature specified by the supplier. Protect it from contamination and excessive moisture, and keep the container properly labelled. Maintain separation from incompatible substances and follow the current Safety Data Sheet for any additional product-specific storage requirements.

Precautions for Handling Aluminium Potassium Sulphate

Review the current Safety Data Sheet before use and wear suitable laboratory clothing, protective gloves, and safety goggles. Avoid unnecessary dust generation, inhalation, and eye contact. Use appropriate ventilation when handling dusty material, wash hands after laboratory work, and clean spills using established procedures. Dispose of residues according to institutional requirements and applicable local regulations. Ensure appropriate supervision during educational laboratory experiments.