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CAS 51-78-5

CAS 51-78-5 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 51-78-5

CAS 51-78-5PubChem CID 5828

4-Aminophenol hydrochloride

IUPAC name: 4-aminophenol;hydrochloride

Molecular formula: C6H8ClNO
Molecular weight: 145.59 g/mol
Exact mass: 145.0294416 Da
Topological polar surface area: 46.3 Å²
Hydrogen-bond donors: 3
Hydrogen-bond acceptors: 2
Covalent units: 2
Defined stereocentres: 0

Also known as

P-AMINOPHENOL HYDROCHLORIDEFutramine PFourrine 83Phenol, 4-amino-, hydrochlorideFouramine CPFourrine PDurafur Brown RPelagol CP

16 more reported names

Peltol PPelagol Grey CPFurro Pp-AMINOPHENOL HClp-Hydroxyaniline hydrochlorideCI Oxidation Base 6AC.I. Oxidation Base 6AIWL2N22RFYCI 76551Phenol, p-amino-, hydrochlorideRODOL PCC.I. 76551RefChem:518264200-122-64-Hydroxyanilinium chloride4-Hydroxyaniline hydrochloride

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External database identifiers

ChEMBL:CHEMBL388353
EPA DTXSID:DTXSID6058760

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 51-78-5

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How CAS 51-78-5 is used on this site

CAS 51-78-5 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 51-78-5 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.