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CAS 1 record

CAS 99-96-7

CAS 99-96-7 matches 1 EU annex record across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 99-96-7
CAS 99-96-7PubChem CID 135

4-Hydroxybenzoic Acid

4-hydroxybenzoic acid is a monohydroxybenzoic acid that is benzoic acid carrying a hydroxy substituent at C-4 of the benzene ring. It has a role as a plant metabolite and an algal metabolite. It is a conjugate acid of a 4-hydroxybenzoate. — ChEBI

IUPAC name
4-hydroxybenzoic acid
Molecular formula
C7H6O3
Molecular weight
138.12 g/mol
Exact mass
138.031694049 Da
XLogP3
1.6
Topological polar surface area
57.5 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
3
Covalent units
1
Defined stereocentres
0

Also known as

p-Hydroxybenzoic acidp-Salicylic acid4-CarboxyphenolBenzoic acid, 4-hydroxy-Benzoic acid, p-hydroxy-para-Hydroxybenzoic acidp-OxybenzoesaureJG8Z55Y12H
16 more reported names
NSC-4961FEMA NO. 3986CHEBI:30763CHEBI:17879RefChem:25955202-804-94-Hydroxybenzoatep-carboxyphenol4-hydroxy benzoic acidHydroxybenzoic acid4-HydroxybenzoesaeureParaben-acidp-Oxybenzoesaure [German]p-hydroxy benzoic acid4-hydroxy-benzoic acidAcido p-idrossibenzoico [Italian]
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External database identifiers

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 99-96-7

1 total
No records found for this CAS number.

How CAS 99-96-7 is used on this site

CAS 99-96-7 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 1 EU annex record shares 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 99-96-7 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.