Description

Aluminum Ammonium Sulfate is an inorganic salt widely recognized for its role as a mordant and clarifying agent. Its value lies in its ability to form stable complexes, making it essential for processes requiring precise precipitation or coagulation. This compound is a critical raw material for manufacturers in the water treatment, textile, paper, and food processing industries, where consistent quality and reliable supply are paramount.

Application

• Water Treatment & Purification: Acts as a highly effective coagulant and flocculant for the removal of suspended solids and phosphates in industrial and municipal wastewater.
• Textile Industry: Serves as a key mordant in dyeing processes, improving the fastness and brightness of colors on fabrics like wool and silk.
• Paper Manufacturing: Used in sizing and as a retention aid to improve paper strength, smoothness, and ink receptivity.
• Food Additive (E523): Employed as a firming agent, stabilizer, and pH control agent in baking powders and pickling solutions.
• Leather Tanning: Functions as an astringent and clarifying agent in the preparation and tanning of hides.
• Cosmetics & Personal Care: Utilized as an astringent and antiperspirant ingredient in certain formulations.
• Fire Retardants: Incorporated into materials and coatings to impart flame-resistant properties.
• Laboratory & Analytical Chemistry: Used in qualitative inorganic analysis and as a reagent for precipitation reactions.

Basic Information

Product Name	Aluminum Ammonium Sulfate
CAS No.	7784-25-0
Molecular Formula	NH4Al(SO4)2·12H2O
Molecular Weight	453.33 g/mol
Synonyms	Ammonium Aluminum Sulfate Dodecahydrate; Ammonium Alum; Alum Ammonium; Aluminum Ammonium Sulfate Dodecahydrate; Ammonium Aluminum Sulfate; SAS; E523; Tschermigite
EINECS	233-257-1

Quality Control

Our Aluminum Ammonium Sulfate is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets the specifications required for its intended application, whether industrial, technical, or food grade (FCC). Certificates of Analysis (COA) documenting purity, assay, and impurity profiles are available for every shipment to guarantee traceability and compliance.

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 original packaging or a suitable moisture-proof container to prevent caking and degradation.

Specification

Item	Specification
Appearance	White crystalline powder or lumps
Identification (IR)	Conforms
Assay (NH4Al(SO4)2·12H2O)	≥ 99.0 %
pH (5% solution)	2.5 - 4.0
Insoluble Matter	≤ 0.02 %
Chloride (Cl)	≤ 0.001 %
Heavy Metals (as Pb)	≤ 0.001 %
Iron (Fe)	≤ 0.001 %

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