Request Sample

Products

Products

WhatsApp

+86 18626059817

Email

cora@wxqysteel.com

Address

Shandong Province

Aluminum hydroxide CAS#21645-51-2

  • Aluminum hydroxide CAS#21645-51-2
  • Aluminum hydroxide CAS#21645-51-2
  • Aluminum hydroxide CAS#21645-51-2
  • Aluminum hydroxide CAS#21645-51-2
  • Aluminum hydroxide CAS#21645-51-2

Aluminum hydroxide CAS#21645-51-2

Amphoteric Chemical Reactivity:Exhibits both acidic and basic properties, allowing it to react with acids and alkalis for versatile chemical applications.


High-Purity Solid Form:White, stable solid with consistent composition, suitable for controlled industrial and laboratory use.


Precursor to Aluminum Oxide:Can be thermally converted into aluminum oxide, making it valuable for alumina production processes. 


Good Chemical Stability and Safety: Insoluble in water and stable under normal conditions, enabling safe handling and storage.


Phone ：+86 18626059817
WhatsApp ：+86 18626059817
Email ：cora@wxqysteel.com
product description

Product Description of Aluminum hydroxide CAS#21645-51-2

Aluminum hydroxide, with the chemical formula Al(OH)₃, is a white solid that is insoluble in water but soluble in both acids and alkalis, exhibiting typical amphoteric behavior. When heated and dehydrated in air, it can be converted into aluminum oxide, making it an important precursor for alumina production. It reacts with acids to form salts and water, and with strong bases to produce corresponding salts and water, further demonstrating its amphoteric nature. Due to its slight acidity, it is also sometimes referred to as aluminic acid (H₃AlO₃).


Product Applications of Aluminum hydroxide CAS#21645-51-2
Aluminum hydroxide is a versatile industrial material used as an absorbent, desiccant, filler, flame retardant, and catalyst support. Its applications include pharmaceuticals (antacid), chromatography, dyeing, and the production of glass, ceramics, cosmetics, and various aluminum compounds.


Product Information

Parameters


Melting point300℃
Boiling point2980℃[at 101 325 Pa]
bulk density~90g/100 mL
density2.42 g/cm3 at 20 °C
vapor pressure<0.1 hPa (20 °C)
refractive indexAverage refractive index: 1.57-1.59
storage temp.Store at +5°C to +30°C.
solubility0.0015g/l
formcolloidal suspension
Specific Gravity2.42
colorWhite
PH8-9 (100g/l, H2O, 20℃)(slurry)
OdorOdorless
PH Range>7
Water Solubilityinsoluble
Crystal StructureMonoclinic
Merck14342
Solubility Product Constant (Ksp)pKsp: 32.89
Exposure limitsACGIH: TWA 1 mg/m3
Dielectric constant2.2（Ambient）
Stability:Stable. Incompatible with strong bases.
LogP-1.380 (est)
CAS DataBase Reference21645-51-2(CAS DataBase Reference)
EPA Substance Registry SystemAluminum hydroxide (21645-51-2)

 

Safety Information


Hazard CodesXi
Risk Statements36
Safety Statements26-36
WGK Germany-
RTECSBD0940000
TSCAYes
HS Code28183000
Hazardous Substances Data21645-51-2(Hazardous Substances Data)
ToxicityTDLo oral in child: 79gm/kg/2Y-I


Factory Showcase
拼图_美图设计室-(1)
Quality Control Lab
未标题-2
Shipping And Transportation
拼图_美图设计室
FAQ
Q：

Are you a manufacturer or a trader?

A：
We are a supply chain service provider rather than a single manufacturer. Instead of being tied to one specific factory, we have established deep partnerships with numerous high-quality domestic chemical enterprises that hold certifications such as ISO and REACH. This allows us to flexibly match the most suitable supply sources to your needs while independently conducting third-party quality inspections to ensure delivery quality and price competitiveness.
Q：

How do your overseas warehouses operate, and what are the practical benefits?

A：
We maintain transit warehouses with standing inventory in Southeast Asia, the Middle East, and Eastern Europe.
For you: You can pick up goods directly from local warehouses without the need for full-container orders; delivery times are reduced from the standard 30–45 days to just 3–5 days.
Reduced inventory pressure: You can purchase small batches for trial and quality verification before scaling up orders, avoiding the need to tie up large amounts of capital upfront.
Emergency restocking: If your production line faces a sudden material shortage, we can urgently dispatch supplies from our regional warehouses to prevent production downtime.
Q：

What is the Minimum Order Quantity (MOQ)?

A：
For standard products, the MOQ is typically one 20-foot container (approx. 16–20 tons) for direct shipments from China. However, for stock picked up from overseas warehouses, we support orders starting from 1 ton—ideal for sample testing or small-batch production. Specific MOQs depend on the product category and packaging type; please contact us for details.
Q：

How do you ensure product quality?

A：
We implement a "three-level quality control" system:
Before leaving the factory: We require the factory to provide a Certificate of Analysis (COA) for the specific batch.
Before shipment: We commission international third-party agencies like SGS or Intertek to conduct random inspections, with costs covered by us (for long-term partners).
After arrival: If quality issues arise, we commit to unconditional negotiation regarding returns, exchanges, or compensation, and we assume full responsibility. All terms are stipulated in the contract.
Q：

What payment methods do you accept? Do you offer credit terms?

A：
We accept T/T (Telegraphic Transfer), L/C (Letter of Credit at sight or usance), and D/P (Documents against Payment). For clients with a long-standing partnership and good credit standing, we offer partial credit terms (e.g., 30–60 days), subject to negotiation based on transaction history and due diligence results. Cash on Delivery (COD) is available for local customers ordering in-stock items from our overseas warehouses.
Q：

What is the typical delivery lead time?

A：
FOB (China Port): Goods are prepared and shipped within 7–15 working days after the contract is signed and the prepayment is received.
Overseas Warehouse Stock: Items are dispatched within 1–3 working days of order confirmation and payment; local delivery typically takes 2–5 days (depending on the country).
Q：

Which trade terms do you offer? Do you support DDP (Delivered Duty Paid)?

A：
We are proficient in handling common terms such as FOB, CIF, CFR, and EXW. Additionally, for regions covered by our overseas warehouses, we offer DDP services (including duties and door-to-door delivery), allowing you to receive goods without the hassle of complex import customs clearance procedures. Please consult your sales manager for specific costs.
Q：

How can I obtain samples? What are the costs?

A：
If stock is available at an overseas warehouse, we can provide 1–2 kg of samples for free; you only need to cover the local courier fees.
If shipping from China, we can arrange delivery via DHL or FedEx; samples are free, but you bear the international shipping costs. Once a clear intent to cooperate is established, these shipping costs can be deducted from your first order.
Q：

Can the contract price be adjusted if product prices fluctuate?

A：
We offer a price protection mechanism:
For fixed-price contracts, we do not unilaterally raise prices due to market increases.
If you anticipate a market downturn, we can negotiate floating pricing—settling based on a benchmark price on the date of shipment or arrival—to flexibly manage fluctuations.
Q：

What does your after-sales service include?

A：
We provide full-lifecycle service:
Usage Guidance: Assistance with adjusting processing parameters (if required).
Complaint Handling: Response within 48 hours and a solution provided within 7 days.
Regular follow-ups: Proactive contact every six months to understand changing needs and optimize supply solutions.
Contact Us
Submit
Recommendation
Inquiry