Aluminium hydroxide
Also known as: Aluminum hydroxide, Alumina trihydrate, Hydrated alumina, Aluminium trihydroxide, Aluminum trihydroxide, Alugel, Alumigel, Alumina hydrated, Aluminic acid
Aluminium hydroxide (CAS 21645-51-2) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula Al(OH)3 and a molecular weight of 78.004 g/mol. Key properties include a melting point of 300℃ and a density of 2.40. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 21645-51-2
- Jingsj CID
- J-12028-3
- Molecular Formula
- Al(OH)3
- Molecular Weight
- 78.004 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 300℃ |
|---|---|
| Density | 2.40 |
| Exact Mass | 77.989754 |
| PSA | 60.69000 |
| Additional Property | insoluble |
Activity & Biological Data
| Additional Information | [1]. He P, et al. Advances in aluminum hydroxide-based adjuvant research and its mechanism. Hum Vaccin Immunother. 2015;11(2):477-88. [2]. Amini Y, et al. Aluminum hydroxide nanoparticles show strong activity to stimulate Th-1 immune response against tuberculosis. Artif Cells Nanomed Biotechnol. 2017 Nov;45(7):1331-1335. |
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Customs & Trade Information
| HS Code | 2818300000 |
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Frequently Asked Questions
What is the CAS number of Aluminium hydroxide?
The CAS number of Aluminium hydroxide is 21645-51-2.
What are the molecular formula and molecular weight of Aluminium hydroxide?
Aluminium hydroxide has molecular formula Al(OH)3 and molecular weight 78.004 g/mol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Aluminium hydroxide (CAS 21645-51-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-12028-3 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.