Official EU label nameGlossary entry 6409

CI 45100

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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Resolved identifiers

Resolved substance identity

CAS:3520-42-1

EC:222-529-8

Ingredient index records:

CI 45100

Cosmetic functions: COLORANT, HAIR DYEING

Hydrogen 3,6-bis(diethylamino)-9-(2,4-disulphonatophenyl)xanthylium, sodium salt

Inventory restriction note: IV/71 III/193 (Acid Red 52)

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1 matched or reported name

CI 45100

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name CI 45100.

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 3520-42-1

CAS 3520-42-1PubChem CID 9916275

Acid Red 52

Lissamine rhodamine is an organic sodium salt having 4-[3,6-bis(diethylamino)xanthenium-9-yl]benzene-1,3-disulfonate as the counterion. It has a role as a fluorescent probe, a fluorochrome and a histological dye. It contains a lissamine rhodamine anion. — ChEBI

IUPAC name: sodium 4-[3-(diethylamino)-6-diethylazaniumylidenexanthen-9-yl]benzene-1,3-disulfonate

Molecular formula: C27H29N2NaO7S2
Molecular weight: 580.7 g/mol
Exact mass: 580.13138790 Da
Topological polar surface area: 147.0 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 8
Covalent units: 2
Defined stereocentres: 0

Also known as

C.I. Acid Red 52Acid Rhodamine BLissamine RhodamineKiton Rhodamine BXylene Red BAmido Rhodamine BAcid Red XBFood Red 106

16 more reported names

Fenazo Pink XXBSolar Rhodamine BAmacid Rhodamine BErio Acid Red XBErio Acid Red XBCRed No. 106Acid Leather Red KBAizen Food Red No. 106Pontacyl Brilliant PinkBrilliant Acid Rhodamine BCI 45100Red 106Brilliant Superlan Rhodamine BBrilliant Superlan Rhodamine 2B821LWZ3R6RVIBRACOLOR RED ARE52

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External database identifiers

ChEBI:CHEBI:52101
ChEMBL:CHEMBL1306565
EPA DTXSID:DTXSID7021235

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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