Description

Aluminium Sodium Sulfate 12-Water is a hydrated double salt of aluminum and sodium sulfate, widely recognized for its role as a firming agent and stabilizer. This compound is valued for its consistent quality and reliable performance in critical industrial and food processing applications. It is primarily utilized by manufacturers in the food, water treatment, and paper production industries seeking a dependable source of this essential chemical.

Application

• Food Additive (Firming Agent): Used in pickling processes, canned vegetables, and certain cheeses to maintain texture and structural integrity.
• Water Purification: Acts as a coagulant aid in conjunction with primary coagulants to improve floc formation and settling in water treatment plants.
• Paper Manufacturing: Employed in the sizing process to improve the paper's resistance to water and ink penetration.
• Textile Industry: Serves as a mordant in dyeing processes to fix colors onto fabrics, improving colorfastness.
• Cosmetics & Personal Care: Found in some antiperspirant formulations for its astringent properties.
• Laboratory Reagent: Used in analytical chemistry and as a standard or reagent in various test procedures.
• Construction Materials: Can be used as an additive in certain cement and plaster formulations to control setting time.

Basic Information

Product Name	Aluminium Sodium Sulfate 12-Water
CAS No.	7784-28-3
Molecular Formula	AlNa(SO₄)₂·12H₂O
Molecular Weight	458.28 g/mol
Synonyms	Sodium Aluminum Sulfate Dodecahydrate; SAS; Alum Sodium; Sodium Alum; Soda Alum; Aluminum Sodium Sulfate Dodecahydrate; E521; NaAl(SO₄)₂·12H₂O
EINECS	233-277-3

Quality Control

Our Aluminium Sodium Sulfate 12-Water is manufactured under a stringent quality management system. Production adheres to relevant specifications for industrial and food-grade applications, including potential compliance with FCC (Food Chemicals Codex) guidelines where supplied for food use. Every batch is tested against established parameters to ensure consistent purity and performance. Certificates of Analysis (COA) documenting assay, impurity levels, and physical specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept in its original, sealed packaging until use to prevent caking and degradation due to moisture absorption.

Specification

Item	Specification
Appearance	Colorless, transparent crystals or white crystalline powder
Identification (IR)	Conforms
Assay (AlNa(SO₄)₂·12H₂O)	≥ 98.0 %
pH (5% solution)	2.5 - 4.0
Water Insoluble Matter	≤ 0.1 %
Heavy Metals (as Pb)	≤ 10 ppm
Iron (Fe)	≤ 20 ppm
Chloride (Cl)	≤ 50 ppm

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