Description

Aluminum Hydrate CAS NO 20768-67-6 is a versatile inorganic compound, also widely known as aluminum hydroxide, serving as a critical raw material and functional additive across numerous industries. Its primary value lies in its dual functionality as a flame retardant and filler, as well as its role as a key intermediate in aluminum chemical production. This product is essential for manufacturers in the plastics, rubber, coatings, and pharmaceutical sectors seeking to enhance material safety and performance. We supply consistent, high-quality material to meet the rigorous demands of global industrial applications.

Application

• As a highly effective, halogen-free flame retardant and smoke suppressant in polymers, cables, and synthetic rubbers.
• As a functional filler and reinforcing agent in plastics, rubber compounds, and adhesives to improve mechanical properties.
• As a key raw material for the production of aluminum chemicals, including aluminum sulfate, polyaluminum chloride (PAC), and zeolites.
• As an antacid active pharmaceutical ingredient (API) and excipient in pharmaceutical formulations.
• In the manufacture of glass, ceramics, and catalysts.
• As a coagulant aid in water treatment processes.
• In the paper industry as a coating pigment and filler to improve brightness and printability.
• As a stabilizer and neutralizer in various chemical processes.

Basic Information

Product Name	Aluminum Hydrate
CAS No.	20768-67-6
Molecular Formula	Al(OH)3 or Al2O3·3H2O
Molecular Weight	78.00 g/mol (for Al(OH)3)
Synonyms	Aluminum Hydroxide; Alumina Trihydrate (ATH); Hydrated Alumina; Trihydroxyaluminum; Gibbsite; Aluminic Acid; ATH Flame Retardant; Aluminium(III) Hydroxide
EINECS	244-492-7

Quality Control

Our Aluminum Hydrate is produced under a stringent quality management system to ensure batch-to-batch consistency and reliability. Quality parameters, including purity, particle size distribution, and loss on ignition, are rigorously tested against established specifications. Certificates of Analysis (COA) are provided with each shipment. We can supply grades compliant with various industrial standards, including those for flame retardancy, pharmaceuticals (USP/EP), and food contact materials, where applicable.

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); keep containers tightly sealed to prevent absorption of atmospheric moisture and caking. Store away from strong acids.

Specification

Item	Specification
Appearance	White fine powder
Identification (IR)	Conforms
Assay (as Al2O3)	≥ 64.5 %
Loss on Ignition (LOI)	34.0 - 35.0 %
Moisture Content	≤ 0.5 %
Particle Size (D50)	1 - 50 µm (various grades)
pH (10% slurry)	8.0 - 10.0
Water Soluble Matter	≤ 0.5 %
Heavy Metals (as Pb)	≤ 20 ppm
Iron (Fe)	≤ 0.05 %

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