Date published: 2025-10-15

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Aluminum hydroxide (CAS 21645-51-2)

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Application:
Aluminum hydroxide is a catalyst in various chemical processes
CAS Number:
21645-51-2
Purity:
76.5% minimum
Molecular Weight:
78.00
Molecular Formula:
H3AlO3
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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Aluminum hydroxide is a compound with relevance in the field of materials science and environmental research. As a common amphoteric hydroxide, it is frequently studied for its role as a precursor to alumina-based ceramics, which are pivotal in the production of advanced ceramic materials with high thermal stability and strength. The gelatinous form of aluminum hydroxide is of particular interest in water treatment research, where it is utilized as a flocculant to remove impurities from water through the process of coagulation. In the realm of geochemistry, its interaction with various elements and compounds is for understanding the mechanisms of soil remediation and the immobilization of pollutants. Aluminum hydroxide also serves an important function as a model compound in the study of the acid-base behavior of hydroxides in aqueous solutions, providing valuable data for thermodynamic calculations. Additionally, researchers investigate its potential in the development of fire retardant materials given its endothermic decomposition, which releases water vapor when exposed to heat.


Aluminum hydroxide (CAS 21645-51-2) References

  1. Effects of aluminum hydroxide and calcium carbonate antacids on the bioavailability of ciprofloxacin.  |  Frost, RW., et al. 1992. Antimicrob Agents Chemother. 36: 830-2. PMID: 1503446
  2. ATR-FTIR investigation on the complexation of myo-inositol hexaphosphate with aluminum hydroxide.  |  Guan, XH., et al. 2006. J Colloid Interface Sci. 293: 296-302. PMID: 16111695
  3. Aluminum hydroxide adjuvant produced under constant reactant concentration.  |  Yau, KP., et al. 2006. J Pharm Sci. 95: 1822-33. PMID: 16795021
  4. Imject Alum is not aluminum hydroxide adjuvant or aluminum phosphate adjuvant.  |  Hem, SL., et al. 2007. Vaccine. 25: 4985-6. PMID: 17543429
  5. Human health risk assessment for aluminium, aluminium oxide, and aluminium hydroxide.  |  Krewski, D., et al. 2007. J Toxicol Environ Health B Crit Rev. 10 Suppl 1: 1-269. PMID: 18085482
  6. Advances in aluminum hydroxide-based adjuvant research and its mechanism.  |  He, P., et al. 2015. Hum Vaccin Immunother. 11: 477-88. PMID: 25692535
  7. Safety Assessment of Alumina and Aluminum Hydroxide as Used in Cosmetics.  |  Becker, LC., et al. 2016. Int J Toxicol. 35: 16S-33S. PMID: 27913785
  8. The Preparation and Physicochemical Characterization of Aluminum Hydroxide/TLR7a, a Novel Vaccine Adjuvant Comprising a Small Molecule Adsorbed to Aluminum Hydroxide.  |  Malyala, P., et al. 2018. J Pharm Sci. 107: 1577-1585. PMID: 29421216
  9. Crumpled Aluminum Hydroxide Nanostructures as a Microenvironment Dysregulation Agent for Cancer Treatment.  |  Lerner, MI., et al. 2018. Nano Lett. 18: 5401-5410. PMID: 30070485
  10. Thermostable Ebola virus vaccine formulations lyophilized in the presence of aluminum hydroxide.  |  Chisholm, CF., et al. 2019. Eur J Pharm Biopharm. 136: 213-220. PMID: 30703544
  11. Aluminum Hydroxide And Aluminum Phosphate Adjuvants Elicit A Different Innate Immune Response.  |  Kooijman, S., et al. 2022. J Pharm Sci. 111: 982-990. PMID: 35090866
  12. Evaluation of antacid suspensions containing aluminum hydroxide and magnesium hydroxide.  |  Hem, SL., et al. 1982. Am J Hosp Pharm. 39: 1925-30. PMID: 7148862
  13. Structure and properties of aluminum-containing adjuvants.  |  Hem, SL. and White, JL. 1995. Pharm Biotechnol. 6: 249-76. PMID: 7551220
  14. The effect of aluminum hydroxide dissolution on the bleeding of aluminum lake dyes.  |  Desai, A., et al. 1993. Pharm Res. 10: 1458-60. PMID: 8272407
  15. Differential thermal analysis of aluminum hydroxide gel.  |  Nail, SL., et al. 1976. J Pharm Sci. 65: 1391-3. PMID: 966161

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Aluminum hydroxide, 100 g

sc-214529
100 g
$38.00

Aluminum hydroxide, 500 g

sc-214529A
500 g
$54.00