Why does CAS 150-13-0 appear in more than one EU cosmetic annex?

A substance identified by CAS 150-13-0 may appear in multiple EU cosmetic regulation annexes when it is subject to different conditions in different contexts — for example, restricted under Annex III with specific conditions, while also appearing in Annex IV as an approved colorant under separate entry conditions. Each entry must be reviewed individually.

How do I check if my formula contains a substance with CAS 150-13-0?

Use the INCI Checker on CosIng Checker with INCI names, CAS numbers or EC numbers. Paste CAS 150-13-0 to screen it directly, then review every linked annex record and supplier document.

CAS 1 record

CAS 150-13-0

Q: How do I use CAS 150-13-0 for compliance screening?

Cross-reference CAS 150-13-0 against your raw material specification sheets and CoA documents. When it appears in Annex II, verify absence. When it appears in Annex III, verify that concentration limits and product type conditions are met. All annex entries sharing this CAS number are listed on this page.

CAS 150-13-0 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 150-13-0

CAS 150-13-0PubChem CID 978

4-Aminobenzoic Acid

4-aminobenzoic acid is an aminobenzoic acid in which the amino group is para to the carboxy group. It has a role as an allergen, a plant metabolite and an Escherichia coli metabolite. It is functionally related to a benzoic acid. It is a conjugate base of a 4-carboxyanilinium. It is a conjugate acid of a 4-aminobenzoate. It is a tautomer of a 4-ammoniobenzoate. — ChEBI

IUPAC name: 4-aminobenzoic acid

Molecular formula: C7H7NO2
Molecular weight: 137.14 g/mol
Exact mass: 137.047678466 Da
XLogP3: 0.8
Topological polar surface area: 63.3 Å²
Hydrogen-bond donors: 2
Hydrogen-bond acceptors: 3
Covalent units: 1
Defined stereocentres: 0

Also known as

p-aminobenzoic acidPABAVitamin BXp-Carboxyanilinepara-aminobenzoic acidSunbrella4-CarboxyanilineParaminol

16 more reported names

PabacydAmbenBenzoic acid, 4-amino-p-CarboxyphenylaminePabafilmPabamineParanateRomavitVitamin H'Bacterial vitamin H11-Amino-4-carboxybenzeneAnticanitic vitaminChromotrichia factorRVPaba LipstickTrichochromogenic factorPapacidum

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:194474
ChEBI:CHEBI:30753
ChEMBL:CHEMBL542
EPA DTXSID:DTXSID6024466
PubMed:22994574
PubMed:22980818
PubMed:22954377
PubMed:22935493
PubMed:22900588
PubMed:22882831
PubMed:22849329
PubMed:22849295
PubMed:22835378
PubMed:22813077
PubMed:22701563
PubMed:22693451

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 150-13-0

1 total

Annex

Entry

167

4-Aminobenzoic acid and its esters, with the free amino group

205-753-0

How CAS 150-13-0 is used on this site

CAS 150-13-0 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 150-13-0 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.

Frequently asked questions

A substance identified by CAS 150-13-0 may appear in multiple EU cosmetic regulation annexes when it is subject to different conditions in different contexts. For example, a substance might be restricted under Annex III with specific conditions, and the same CAS might also appear in Annex IV as an approved colorant under separate entry conditions. Each entry must be reviewed individually.

Cross-reference the CAS number against your raw material specification sheets and CoA documents. When a CAS appears in Annex II, verify absence. When it appears in Annex III, verify that concentration limits and product type conditions are met in your formulation. All annex entries sharing this CAS number are listed above.

A CAS number is assigned by the Chemical Abstracts Service (USA) and is globally recognised. An EC number is a European Commission identifier from inventories such as EINECS, ELINCS or the NLP list. Both identifiers may appear in EU cosmetic annex entries. Some substances have both, some have only one, and some older entries may have neither.

The INCI Checker accepts ingredient names, CAS numbers and EC numbers. Check this CAS number directly, then verify the result against supplier specification sheets and every linked annex condition.

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Tools & next steps

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