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Aluminum hydroxide

CAS 21645-51-2Al(OH)3Salts

Aluminum hydroxide (CAS: 21645-51-2, Al(OH)3) is an inorganic compound with a molecular weight of 78.00. It is a white, amorphous solid. This versatile chemical serves as a crucial precursor in the production of other aluminum compounds, a flame retardant filler, and an antacid ingredient. Its amphoteric nature allows it to react with both acids and bases, making it valuable in various industrial processes and applications.

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Aluminum hydroxide (Al(OH)3) — chemical structure, CAS 21645-51-2; Chemistry, fine chemical supplied by Tech Serve Solutions
Aluminum SaltsEssential ChemicalsResearch EssentialsSalts
01 /Applications

Precursor for Aluminum Chemicals

Aluminum hydroxide is a primary raw material for manufacturing aluminum oxide (alumina), aluminum sulfate, and sodium aluminate. These downstream products are vital in water treatment, papermaking, and catalysis.

Flame Retardant

Incorporated into polymers and plastics, aluminum hydroxide acts as a flame retardant by releasing water upon heating, which cools the material and dilutes flammable gases.

Antacid and Buffer

In pharmaceutical and consumer products, its ability to neutralise stomach acid makes it an effective antacid. It also functions as a buffering agent in various formulations.

Filler and Pigment

It is used as a filler in materials like paints, coatings, and rubber, contributing to opacity and viscosity control. Its white colour also makes it suitable as a pigment extender.

02 /Properties
Molecular weight78.00
Linear formulaAl(OH)3
GradeVetec™ reagent grade
03 /Identifiers & registry
CAS number
21645-51-2
MDL number
MFCD00003420
04 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

05 /Frequently asked questions

What is Aluminum Hydroxide used for?

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Aluminum hydroxide is used as a precursor for other aluminum compounds, a flame retardant filler in plastics and polymers, an antacid, and a buffering agent in various formulations. It also serves as a filler and pigment extender in paints and coatings.

What is the CAS number and formula for Aluminum Hydroxide?

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The CAS number for Aluminum Hydroxide is 21645-51-2, and its chemical formula is Al(OH)3.

What grade and purity does Tech Serve Solutions supply?

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Tech Serve Solutions supplies Aluminum Hydroxide in Vetec™ reagent grade. We do not represent this product as USP, BP, or EP grade.

What are the safety and handling considerations for Aluminum Hydroxide?

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Aluminum Hydroxide is generally considered a low-hazard substance with no specific GHS hazard classifications provided. However, standard laboratory safety practices, including the use of personal protective equipment and adequate ventilation, should always be followed when handling chemicals.

Does Tech Serve Solutions export Aluminum Hydroxide?

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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including Aluminum Hydroxide, serving customers worldwide.

How can I request a sample or quote for Aluminum Hydroxide?

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To request a sample or a quote for Aluminum Hydroxide, please contact our sales team through the website or by phone, providing the product name and CAS number.

Need Aluminum hydroxide in a specific grade or volume?