Official EU label nameGlossary entry 17470

NINHYDRIN

This record confirms an official common ingredient name for EU cosmetic product labelling. It does not by itself confirm that the substance is permitted, unrestricted or safe.

Global evidence snapshot

The resolved identity has matching regulatory evidence in 0 of 13 indexed market datasets: 0 country records and 0 EU Annex records. Every result and evidence gap is listed below.

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Evidence gaps

Resolved identifiers

Resolved substance identity

CAS:485-47-2

EC:207-618-1

Ingredient index records:

NINHYDRIN

Cosmetic functions: REDUCING

2,2-Dihydroxy-1H-indene-1,3-(2H)-dione

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1 matched or reported name

NINHYDRIN

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name NINHYDRIN.

That is a statement about this inventory, not about the law: no imported rule is not evidence that a substance is permitted. A rule may exist under a different name, under a CAS or EC number this glossary entry does not carry, or in a dataset not yet imported.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 485-47-2

CAS 485-47-2PubChem CID 10236

Ninhydrin

Ninhydrin is a member of the class of indanones that is indane-1,3-dione bearing two additional hydroxy substituents at position 2. It has a role as a colour indicator and a human metabolite. It is a member of indanones, a ketone hydrate, a beta-diketone and an aromatic ketone. — ChEBI

IUPAC name: 2,2-dihydroxyindene-1,3-dione

Molecular formula: C9H6O4
Molecular weight: 178.14 g/mol
Exact mass: 178.02660867 Da
XLogP3: 0.1
Topological polar surface area: 74.6 Å²
Hydrogen-bond donors: 2
Hydrogen-bond acceptors: 4
Covalent units: 1
Defined stereocentres: 0

Also known as

Ninhydrin hydrate1,2,3-Indantrione monohydrate2,2-Dihydroxy-1H-indene-1,3(2H)-dione1H-Indene-1,3(2H)-dione, 2,2-dihydroxy-Triketohydrindene hydrate2,2-Dihydroxy-1,3-indandione2,2-Dihydroxy-1,3-indanedione1,2,3-Indantrione, 2-hydrate

16 more reported names

1,3-Indandione, 2,2-dihydroxy-HCL6S9K23ACHEBI:86374Indantrione MonohydrateMonohydrate, IndantrioneRefChem:854157207-618-1Ninhydrine2,2-Dihydroxyindane-1,3-dioneNinhydrin Spray2,2-dihydroxy-2,3-dihydro-1H-indene-1,3-dioneTrioxohydrindene monohydrate2,2-Dihydroxy-1,3-dioxoindanCCRIS 4849EINECS 207-618-1UNII-HCL6S9K23A

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External database identifiers

ChEBI:CHEBI:86374
ChEMBL:CHEMBL1221925
EPA DTXSID:DTXSID7025716
PubMed:35435491
PubMed:23105849
PubMed:22939137
PubMed:22925983
PubMed:22905533
PubMed:22732185
PubMed:22707862
PubMed:22693628
PubMed:22666225
PubMed:22666166
PubMed:22666103
PubMed:22655071

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

Additional authoritative substance research

Each link searches that source for this identity. A link is a research route, not a claim that the source holds an exact record. What each source is, and its legal weight

Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal US EPA CompTox CTX APIs

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Official source and scope

Imported from Commission Implementing Decision (EU) 2025/1175 (dataset version EU 2025/1175). The glossary supplies common ingredient names for the ingredient list required by Article 19(1)(g); it is not an approval or safety list.

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