Description

Aluminium Ammonium Sulfate Dodecahydrate is a high-purity inorganic salt widely recognized for its stability and versatility in industrial and technical applications. This compound is valued for its role as a mordant in dyeing processes and as a key ingredient in water purification and fireproofing formulations. It serves critical functions across diverse sectors including the textile industry, water treatment facilities, paper manufacturing, and as a component in specific chemical synthesis and analytical reagents.

Application

• Textile Industry: Primarily used as a mordant to fix dyes onto fabrics, ensuring colorfastness and vibrant hues.
• Water Treatment: Acts as a flocculating agent to clarify water by removing suspended particles and impurities.
• Fire Retardants: Incorporated into formulations for wood, textiles, and paper to impart fire-resistant properties.
• Paper Manufacturing: Used in the production of certain paper grades to improve sheet formation and as a sizing component.
• Leather Tanning: Serves as a mineral tanning agent in the processing of hides.
• Analytical Chemistry: Employed as a reagent in laboratory analysis and qualitative testing.
• Catalyst & Chemical Synthesis: Functions as a catalyst or raw material in specific organic and inorganic synthesis processes.
• Cosmetics & Personal Care: Used in limited applications as an astringent or in antiperspirant formulations.

Basic Information

Product Name	Aluminium Ammonium Sulfate Dodecahydrate
CAS No.	7784-26-1
Molecular Formula	NH4Al(SO4)2 · 12H2O
Molecular Weight	453.33 g/mol
Synonyms	Ammonium Alum; Ammonium Aluminum Sulfate Dodecahydrate; Aluminum Ammonium Sulfate; Alum Ammonium; Ammonium Aluminium Sulfate; SAS (for Ammonium Alum); Tschermigite; FCC Grade Ammonium Alum
EINECS	233-382-4

Quality Control

Our Aluminium Ammonium Sulfate Dodecahydrate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and physical characteristics. We can supply material compliant with various standards, including Food Chemicals Codex (FCC) for applicable grades. A comprehensive Certificate of Analysis (COA) documenting all test results is provided with every shipment to guarantee traceability and quality assurance for our global B2B clients.

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 material is hygroscopic (moisture-sensitive) and must be kept in a low-humidity environment to prevent caking and degradation. Keep away from incompatible materials such as strong bases.

Specification

Item	Specification
Appearance	White crystalline powder or lumps
Identification (IR)	Conforms
Assay (NH4Al(SO4)2·12H2O)	≥ 99.0 %
pH (5% Solution)	2.5 - 3.5
Insoluble Matter	≤ 0.02 %
Chloride (Cl)	≤ 0.001 %
Iron (Fe)	≤ 0.001 %
Heavy Metals (as Pb)	≤ 0.001 %

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