Description

Aluminium Potassium Sulfate Dodecahydrate is a highly purified inorganic salt, also known as potassium alum, with the CAS number 7784-24-9. It serves as a critical multifunctional agent valued for its astringent, clarifying, and pH-buffering properties across diverse industrial sectors. This compound is essential for manufacturers in the water treatment, pharmaceutical, cosmetic, and food processing industries seeking a reliable and compliant raw material.

Application

• Water Treatment & Purification: Acts as a highly effective flocculating agent for clarifying drinking water and treating industrial wastewater.
• Pharmaceutical Manufacturing: Used as a topical astringent and styptic in medical formulations and as a hardening agent in gelatin capsule production.
• Food Industry (FCC Grade): Employed as a firming agent and pH control substance in pickling processes and baked goods.
• Cosmetics & Personal Care: A key ingredient in natural deodorants and aftershave products for its antiseptic and skin-tightening effects.
• Leather Tanning: Functions as a mordant to prepare and stabilize hides during the tanning process.
• Dyeing & Textile Processing: Serves as a mordant to fix dyes onto fabrics, improving color fastness and vibrancy.
• Laboratory & Education: Used in crystal growth experiments and as a reagent in various analytical chemistry procedures.
• Fire Retardant Formulations: Incorporated into materials to impart flame-retardant characteristics.

Basic Information

Product Name	Aluminium Potassium Sulfate Dodecahydrate
CAS No.	7784-24-9
Molecular Formula	AlK(SO₄)₂·12H₂O
Molecular Weight	474.39 g/mol
Synonyms	Potassium Alum; Potash Alum; Aluminum Potassium Sulfate; Potassium Aluminum Sulfate Dodecahydrate; Sulfuric Acid, Aluminum Potassium Salt (2:1:1), Dodecahydrate; Alum, Potassium; Kalinite; KAl(SO4)2·12H2O
EINECS	233-141-3

Quality Control

Our Aluminium Potassium Sulfate Dodecahydrate is manufactured under a strict quality management system. We offer grades compliant with Food Chemicals Codex (FCC), USP/NF, and industrial standards, ensuring suitability for your specific application. Every batch undergoes rigorous analytical testing, and a comprehensive Certificate of Analysis (COA) is available upon request to guarantee purity, identity, and conformance to specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent caking and degradation due to atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless, transparent crystals or white crystalline powder
Identification (IR)	Conforms
Assay (AlK(SO₄)₂·12H₂O)	≥ 99.0 %
pH (5% Solution)	3.0 - 3.5
Water Insoluble Matter	≤ 0.02 %
Chloride (Cl)	≤ 0.001 %
Ammonium (NH₄)	≤ 0.005 %
Heavy Metals (as Pb)	≤ 10 ppm
Iron (Fe)	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.