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Aluminium Hydroxide Extra Pure
Aluminium Hydroxide Extra Pure is a high-purity, white, odorless, and amorphous powder widely used in laboratory research and analytical applications. As an amphoteric compound, it reacts with both acids and bases, making it ideal for studying neutralization reactions, buffer systems, and solubility equilibria. In inorganic and coordination chemistry, it serves as a precursor for various aluminum compounds and plays a role in ion exchange and adsorption studies. Its extra pure grade ensures low interference in sensitive analytical procedures such as gravimetric analysis. Due to its tendency to absorb carbon dioxide from the air, it should be stored in tightly sealed containers under dry conditions to maintain its chemical integrity and performance in laboratory environments.
Description
USES
Primary Uses
- Reagent in Qualitative Inorganic Analysis
- Used for precipitating metal ions and testing for amphoteric behavior in classic cation group analysis.
- Amphoteric Substance Demonstrations
- Ideal for teaching how substances can react with both acids and bases; dissolves in both HCl and NaOH.
- Precursor for Alumina in Lab Synthesis
- Converted to aluminum oxide (Al₂O₃) by controlled heating for use in ceramic, catalyst, or adsorption research.
- pH Buffering and Neutralization Reactions
- Applied in experiments to neutralize acids in controlled titration or environmental simulations.
- Model Substance in Environmental Chemistry
- Simulates behavior of aluminum compounds in acid rain, soil, or wastewater treatment studies.
Secondary Uses
- Adsorbent in Lab-Scale Purification
- Studied for its capacity to adsorb dyes, metal ions, and contaminants in prototype water purification systems.
- Pharmaceutical Research (Antacid Formulations)
- Used in lab tests modeling the behavior of aluminum hydroxide in gastrointestinal pH conditions.
- Thermal Decomposition Experiments
- Decomposes to Al₂O₃ and H₂O when heated, useful for thermogravimetric analysis (TGA) and calcination studies.
- Nanomaterial Synthesis Research
- Used as a base material for preparing aluminum-based nanostructures or gel-like materials.
- Teaching Lab Experiments in Solubility and Precipitation
Demonstrates low solubility and common ion effect principles in educational settings.
Additional information
| AVAILABLE GRADES |
LABORATORY GRADE, |
|---|---|
| PACK SIZE AVERAGE |
Plastic Tin ( 20g- 500g) |
| AVAILABLE TEXTURES |
Powdery – Fine, dry particles (e.g., baking soda, powdered detergents). |
KEY ATTRIBUTES
1. Basic Identification Attributes
- Chemical Name: Aluminium Hydroxide (IUPAC: Aluminium trihydroxide)
- CAS Number: 21645-51-2
- HS Code: 28183000
- Molecular Formula: Al(OH)₃
- Synonyms:
- Aluminum hydroxide
- Hydrated alumina
- Alumina trihydrate (ATH)
- Trihydroxidoaluminium
- C.I. Pigment White 24
2. Physical & Chemical Properties
- Physical State: Solid (fine powder)
- Color & Odor: White, odorless powder
- Boiling Point: Not applicable (decomposes)
- Melting Point: ~300°C (decomposes to Al₂O₃ and water vapor)
- Density/Specific Gravity: ~2.42 g/cm³
- Solubility:
- Water: Practically insoluble
- Acids & Alkalis: Soluble (amphoteric behavior)
- pH Level: ~6.5–8.0 (in suspension)
- Vapor Pressure & Volatility: Non-volatile
- Flash Point: Not flammable
- Autoignition Temperature: Not applicable
- Viscosity: Not applicable (solid)
3. Safety & Hazard Attributes
- Hazard Class (GHS):
- Not classified as hazardous
- May cause mild mechanical irritation to eyes, skin, or respiratory tract as dust
- NFPA Ratings:
- Health: 1
- Flammability: 0
- Reactivity: 0
- Exposure Limits:
- OSHA PEL (total dust): 15 mg/m³
- ACGIH TLV (inhalable): 1 mg/m³ (as aluminium salts)
- Reactivity:
- Amphoteric – reacts with both acids (forming Al³⁺ salts) and bases (forming aluminates)
- Stable under normal lab conditions
4. Storage & Handling Attributes
- Storage Conditions:
- Store in a dry, cool environment in sealed containers
- Protect from strong acids or bases unless part of intended experiment
- Incompatible Materials:
- Strong acids, strong bases
- Container Type:
- HDPE jars, plastic-lined fiber containers, or glass bottles
- Shelf Life & Expiration Date:
- 3–5 years if kept sealed and moisture-free
- Special Handling Requirements:
- Use dust mask or respirator if handling large quantities
- Gloves and goggles recommended to avoid eye or skin contact
5. Regulatory & Compliance Attributes
- Regulatory Status:
- Listed in TSCA, REACH, and major global inventories
- Common in labs for analytical, neutralization, and ceramic applications
- Hazard Symbols (GHS Pictograms):
- None required
- Transportation Restrictions:
- Not classified as hazardous for transport
- Waste Disposal Method:
- Dispose as non-hazardous inorganic waste
- Follow lab and institutional protocols for waste handling
6. Environmental & Health Impact
- Ecotoxicity:
- Low; considered environmentally benign in small quantities
- Persistence in Environment:
- Stable; does not degrade biologically but binds in soil
- Carcinogenicity/Mutagenicity:
- Not classified as carcinogenic or mutagenic by IARC, NTP, or OSHA
- Biodegradability:
- Not biodegradable (inorganic), but chemically stable and safe in soil or water
SAFETY HANDLING PRECAUTIONS
- Personal Protective Equipment (PPE):
- Wear lab coats, chemical-resistant gloves (e.g., nitrile), and safety goggles.
- Use a dust mask or work under a fume hood if handling powders in open air.
- Handling:
- Avoid creating or inhaling dust.
- Do not get in eyes or on skin.
- Handle in a well-ventilated laboratory environment.
- Avoid contact with acids (reacts to release heat and aluminum salts).
- Storage:
- Store in a tightly closed container in a dry, cool, and well-ventilated place.
- Keep away from strong acids and incompatible materials.
- Label properly and protect from moisture and contamination.
- Hygiene Measures:
- Wash hands and exposed skin thoroughly after handling.
- Do not eat, drink, or smoke in the laboratory.
- Decontaminate lab surfaces after use.
FIRST AID MEASURES
- Inhalation:
- Move the person to fresh air immediately.
- If symptoms such as coughing or throat irritation occur, seek medical advice.
- Rinse mouth and nasal passages with water.
- Skin Contact:
- Wash with soap and water.
- Remove contaminated clothing.
- Seek medical attention if irritation develops or persists.
- Eye Contact:
- Immediately flush eyes with water for at least 15 minutes.
- Hold eyelids open during rinsing.
- Seek medical attention if irritation or discomfort persists.
- Ingestion:
- Rinse mouth with water.
- Do not induce vomiting.
- Give water only if the person is fully conscious.
- Seek medical attention if large amounts are swallowed or symptoms appear.
FIRE FIGHTING MEASURES
- Suitable Extinguishing Media:
- Use dry chemicals, water spray, foam, or carbon dioxide (CO₂) depending on the surrounding fire.
- Specific Hazards:
- Not flammable, but may release irritating fumes (aluminum oxides) if exposed to high heat.
- In contact with acids, may produce heat and mildly corrosive byproducts.
- Protective Equipment for Firefighters:
- Use full protective clothing and self-contained breathing apparatus (SCBA).
- Firefighting Instructions:
- Cool containers exposed to fire with water spray.
- Avoid inhalation of decomposition fumes.
- Fight fire from an upwind position if possible.
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