Aluminum hydroxide
$ 1.89 Original price was: $ 1.89.$ 1.78Current price is: $ 1.78.
Aluminum Hydroxide, chemically known as Al(OH)₃, is a white, odorless, and odorless powder or gelatinous substance. It is widely used in pharmaceuticals as an antacid to neutralize stomach acid and relieve indigestion and heartburn. Beyond healthcare, aluminum hydroxide is a crucial component in water purification, fire retardants, and as a precursor or filler in various industrial applications. It functions as a flame retardant by releasing water upon heating, thus cooling the material and diluting flammable gases. Due to its amphoteric nature, it can react both as an acid and base, enhancing its versatility. Aluminum hydroxide is often utilized in manufacturing aluminum salts and in producing aluminum oxide.
Aluminum hydroxide
Primary Uses
- Pharmaceuticals
- Used as an active ingredient in antacids to treat acid indigestion, heartburn, and gastric ulcers by neutralizing excess stomach acid.
- Functions as a vaccine adjuvant in some immunizations, boosting the immune response.
- Water Treatment
- Used as a flocculant and coagulant aid in water purification to remove impurities and suspended solids.
- Helps in clarifying wastewater and industrial effluents.
- Fire Retardants
- Incorporated into plastics, rubber, and coatings as a flame retardant additive; decomposes endothermically releasing water, which cools surfaces and suppresses flames.
- Used in textiles and building materials to enhance fire resistance.
- Industrial Manufacturing
- Used as a filler in plastics, paper, rubber, and ceramics to improve product strength and durability.
- Precursor for producing alumina (Al₂O₃) and other aluminum compounds.
Secondary Uses
- Cosmetics & Personal Care
- Used in deodorants and antiperspirants as an active ingredient to reduce sweating.
- Acts as an abrasive and opacifying agent in some formulations.
- Catalysts
- Utilized as a catalyst or catalyst support in chemical reactions, including in petrochemical processes.
- Paints & Coatings
- Added to paints to improve durability and resistance to moisture and heat.
- Agriculture
- Used in soil conditioning and as a carrier for pesticides.
1. Basic Identification Attributes
- Chemical Name (IUPAC): Aluminum hydroxide
- Common/Trade Names: Aluminum hydroxide, hydrated alumina, alumina trihydrate
- CAS Number: 21645-51-2
- HS Code: 2818.10.00
- Molecular Formula: Al(OH)₃
- Synonyms: Hydrated aluminum oxide, alumina trihydrate (ATH)
2. Physical & Chemical Properties
- Physical State: White powder or gelatinous solid
- Color & Odor: White, odorless
- Melting Point: Decomposes at ~300°C (loses water, forms Al₂O₃)
- Boiling Point: N/A (decomposes before boiling)
- Density: ~2.42 g/cm³ (bulk density varies with form)
- Solubility: Insoluble in water; soluble in strong acids and alkalis
- pH Level: Amphoteric; typically slightly basic (~8.5 in water)
- Vapor Pressure: Negligible
- Flash Point: Non-flammable
- Autoignition Temperature: N/A
3. Safety & Hazard Attributes
- Hazard Class (GHS): Not classified as hazardous; generally regarded as safe (GRAS)
- NFPA Ratings: Health 1, Flammability 0, Reactivity 0
- Exposure Limits: OSHA PEL = 15 mg/m³ (total dust), ACGIH TLV = 10 mg/m³ (respirable dust)
- Reactivity: Stable under normal conditions; reacts with strong acids and bases
- Incompatibilities: Strong acids, alkalis, and reactive metals
4. Storage & Handling Attributes
- Storage Conditions: Store in a cool, dry, well-ventilated area; avoid moisture accumulation to prevent caking
- Container Type: Sealed plastic or metal containers with moisture barrier
- Shelf Life: Typically 2-3 years if stored properly
- Special Handling: Avoid dust generation; use appropriate PPE (dust masks, gloves, goggles)
5. Regulatory & Compliance Attributes
- Regulatory Status: Approved for pharmaceutical and food use in many countries
- Transportation: Not classified as hazardous for transport
- Waste Disposal: Dispose of in accordance with local environmental regulations
6. Environmental & Health Impact
- Ecotoxicity: Low toxicity to aquatic life; environmentally safe in typical use quantities
- Persistence: Stable, not readily biodegradable but non-toxic
- Carcinogenicity: Not classified as carcinogenic by IARC or OSHA
- Biodegradability: Inorganic compound, not biodegradable
Safety Handling Precautions
- PPE: Use gloves, dust masks, and eye protection to prevent irritation from dust.
- Handling: Minimize dust formation; handle in well-ventilated areas.
- Storage: Keep containers tightly closed and away from moisture and incompatible substances.
- Hygiene: Wash hands thoroughly after handling; avoid ingestion and inhalation.
First Aid Measures
- Inhalation: Move to fresh air; seek medical attention if coughing or respiratory discomfort persists.
- Skin Contact: Wash with soap and water; seek medical advice if irritation develops.
- Eye Contact: Rinse immediately with water for at least 15 minutes; consult a physician if irritation persists.
- Ingestion: Rinse mouth with water; seek medical attention if large quantities are ingested.
Firefighting Measures
- Fire Hazards: Aluminum hydroxide is non-flammable and does not support combustion.
- Extinguishing Media: Use water spray, foam, dry chemical, or CO₂ for surrounding fires.
- Special Precautions: No special precautions needed for firefighting related to this material.
- Firefighters: Use standard protective equipment.
Related products
Aluminum Ammonium Sulphate
Aluminum ammonium sulphate, commonly known as ammonium alum or ammonium aluminum sulfate, is a crystalline chemical compound consisting of aluminum, ammonium, and sulfate ions. It typically appears as a colorless or white crystalline solid with astringent properties. It is widely used for its excellent coagulating, clarifying, and antiseptic properties. Aluminum ammonium sulphate finds applications in water purification, cosmetics, food processing, textile dyeing, and pharmaceuticals. Its ability to precipitate impurities and act as a mordant makes it invaluable in industries requiring precise control of chemical reactions, such as in the preparation of baking powder and fireproof textiles.
Boric Acid
Boric Acid, chemically known as hydrogen borate or boracic acid, is a weak, monobasic Lewis acid of boron. It appears as a white, crystalline powder or granules that are odorless and slightly soluble in water. Boric Acid is commonly used in antiseptics, insecticides, flame retardants, and as a buffering agent in various industrial and pharmaceutical applications. Due to its mild antiseptic and antifungal properties, it is often used in ophthalmic, dermatologic, and other personal care formulations. It also plays a key role in glass and ceramics manufacturing as well as in agriculture.
Calcium Carbonate Light
Calcium Carbonate Light is a finely ground, low bulk density natural mineral composed primarily of calcium carbonate (CaCO₃). Compared to standard grades, it has a lower density and larger particle size distribution, making it suitable for applications where light weight and high brightness are important. This form is extensively used as a filler and extender in industries such as plastics, paints, rubber, paper, adhesives, and construction materials to improve opacity, brightness, and texture, while maintaining low weight and cost efficiency. Its chemical inertness and whiteness provide functional and aesthetic advantages across formulations.
Calcium Carbonate Uncoated
Calcium Carbonate Uncoated is a naturally occurring mineral compound composed primarily of calcium, carbon, and oxygen with the chemical formula CaCO₃. It appears as a fine white powder or granules, widely used as a filler, pigment, and functional additive across various industries. The uncoated form means the calcium carbonate particles are not surface-treated, retaining their natural properties. It is valued for its high brightness, whiteness, and excellent compressibility. Uncoated calcium carbonate is used to enhance opacity, improve processing, and reduce costs in plastics, paints, coatings, adhesives, rubber, paper, and construction materials.
Ferric Ammonium Citrate
Ferric Ammonium Citrate is a dark green to black crystalline or granular inorganic compound composed of iron, ammonium ions, and citrate ions. It is a complex salt of citric acid with ferric iron (Fe³⁺) and ammonium. This compound is highly soluble in water, forming a greenish solution, and is widely utilized as a source of iron in various chemical, pharmaceutical, photographic, and food applications. It acts as a mild oxidizing agent and an iron supplement, valued for its bioavailability and ease of incorporation into formulations. Ferric Ammonium Citrate is typically available in different formulations distinguished by their water and ammonium content, such as green and brown types.
Ferric Chloride Anhydrous
Ferric Chloride Anhydrous (FeCl₃) is a dark brown to black crystalline solid with a metallic luster. It is a highly corrosive, hygroscopic inorganic salt widely used as a chemical reagent, catalyst, and coagulant. In its anhydrous form, ferric chloride is free of water and has a high purity of approximately 98%. It readily dissolves in water, releasing heat and producing acidic solutions. Ferric chloride is valued for its strong Lewis acid properties, making it effective in a variety of industrial, laboratory, and environmental applications. It is commonly supplied as a solid crystalline powder or lumps and should be handled with care due to its corrosive nature.
Magnesium Carbonate Light
Magnesium Carbonate Light is a fine, white, odorless powder primarily composed of magnesium carbonate (MgCO₃). It is characterized by its light texture and high purity. This mineral compound is widely used across various industries due to its excellent absorption properties, mild alkalinity, and non-toxic nature. Magnesium Carbonate Light is commonly employed as an antacid, drying agent, filler, and flow aid in food, pharmaceutical, cosmetic, and industrial applications.
Magnesium Chloride
Magnesium Chloride is a white crystalline salt or granular solid composed of magnesium and chloride ions, commonly found as the hexahydrate form (MgCl₂·6H₂O). It is highly soluble in water, forming a clear, colorless solution with a slightly bitter saline taste. Magnesium Chloride is valued for its hygroscopic properties and is widely used across multiple industries including de-icing, chemical manufacturing, agriculture, food, pharmaceutical, and textile applications. It acts as a source of magnesium, a vital mineral for various biological and industrial processes.

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