chem-data European chemical and regulatory registry

Compound record

Aluminum hydroxide

Also known as C 31C

21645-51-2 · mineral flame retardant · flame retardant

flame retardantmineral fillercables
Why monitored

Rationale behind the monitoring signal, not just the label.

Lookup labels

C 31C Hydrated aluminaAmphojelaluminum hydrate
CAS 21645-51-2
Formula AlH3O3
Molecular weight 78.004 g/mol
InChIKey WNROFYMDJYEPJX-UHFFFAOYSA-K

Why monitored

Why this substance is monitored in the EU

Aluminum hydroxide is currently surfaced as no current candidate list row imported in the EU.

The current imported view anchors this substance in CandidateList. The live rationale focuses on No positive Candidate List entry captured in the current imported source set, and this page is designed for fast status checks before deeper source review.

Rows behind the rationale

Imported framework context and legal signals

CandidateList 8 Mar 2026

No current Candidate List row imported

No positive Candidate List entry captured in the current imported source set

Open official source