Description

Sodium Aluminum Sulfate is an inorganic salt widely recognized for its role as a leavening agent and firming agent in the food industry. This compound is valued for its controlled reaction rate and its ability to produce a fine, uniform texture in baked goods. It is a critical ingredient for manufacturers in the food processing, water treatment, and paper production sectors seeking reliable and consistent chemical performance.

Application

• Food Industry (Primary Use): As a leavening acid in baking powder for cakes, muffins, and biscuits, and as a firming agent in pickled vegetables.
• Water Purification: Used as a coagulant and flocculant to remove suspended particles and clarify water in municipal and industrial treatment plants.
• Paper Manufacturing: Acts as a sizing agent to improve the water resistance and printability of paper products.
• Textile Industry: Employed in dyeing and printing processes as a mordant to fix colors onto fabrics.
• Cosmetics: Functions as an astringent and buffer in certain personal care formulations such as deodorants.
• Construction Materials: Used as an accelerator in some concrete and plaster formulations to control setting time.

Basic Information

Product Name	Sodium Aluminum Sulfate
CAS No.	10102-71-3
Molecular Formula	NaAl(SO₄)₂·12H₂O
Molecular Weight	458.28 g/mol (Dodecahydrate)
Synonyms	SAS; Aluminum Sodium Sulfate; Sodium Alum; Soda Alum; Aluminium Sodium Disulfate Dodecahydrate; E521; INS 521; Cake Alum
EINECS	233-277-3

Quality Control

We supply Sodium Aluminum Sulfate in various grades, including Food Grade (FCC) and Technical Grade, each meeting stringent purity and safety standards. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) detailing assay, impurity profiles, and physical parameters are available upon request to support your quality assurance protocols.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent caking and degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (as NaAl(SO₄)₂·12H₂O)	≥ 98.0 %
pH (5% Solution)	2.5 - 4.0
Water Insoluble Matter	≤ 0.2 %
Heavy Metals (as Pb)	≤ 10 ppm
Arsenic (As)	≤ 3 ppm
Loss on Drying	42.0 - 47.0 %

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