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SHEET /m/aluminium-hydroxide · PubChem CID 10176082 · CAS 21645-51-2 · REV 2026.07

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Aluminium hydroxide

from source

AlH3O3 · 78.004 g/mol

Alum Adjuvant · aluminum hydrate · Hydrated alumina · Hydroxyde d' aluminium

Also sold as AlternaGEL, Amphojel from source

What is Aluminium hydroxide?

The active ingredient in antacids like Amphojel, and the aluminium salt used as an adjuvant to boost the response to some vaccines. from source

CategoryOTC medicine
LeaderboardsBiggestDeadliest

Fig. 1 · 2D structure RDKit

SMILES[OH-].[OH-].[OH-].[Al+3]

Where you'll find it

Sold over the counter, without a prescription. Sold as AlternaGEL, Amphojel. See the rest of the otc medicine group.

Relative acute toxicity from source

Animal study data · LD50

Reported LD50
5,000 mg/kg · very low toxicity
Species
rat
Route
oral

An LD50 describes acute toxicity under experimental conditions and is not a safe or dangerous dose for a person.

Toxicity & hazards

Toxicity · LD50

5,000 mg/kg · very low toxicity · LD50 rat oral from source

1 more reported value
  • 1,100 mg/kgLD50 · other · rat
WarningIrritantH315, H319, H335from source

Sources & methodology

PubChem CID
10176082
Wikidata
Q407125
Structure
PubChem → RDKit
LD50
PubChem
Data refreshed

How MoleculeFinder sources and labels its data