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Official EU label nameGlossary entry 10443

FAST GREEN FCF

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.

0 markets with evidence
Markets checked
13
Markets with evidence
0
Evidence gaps
13
Resolved identifiers
2

Resolved substance identity

CAS:2353-45-9
EC:219-091-5
Ingredient index records:
FAST GREEN FCF
Cosmetic functions: HAIR DYEING

Dihydrogen (ethyl)[4-[4-[ethyl(3-sulphonatobenzyl)amino](4-hydroxy-2-sulphonatobenzhydrylidene]cyclohexa-2,5-dien-1-ylidene](3-sulphonatobenzyl)ammonium, disodium salt (CI 42053)

Inventory restriction note: II/1357 (When used as a substance in hair dye products)

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1 matched or reported name
FAST GREEN FCF

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name FAST GREEN FCF.

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 2353-45-9
CAS 2353-45-9PubChem CID 16887

Fast Green FCF

Fast green FCF is an organic sodium salt having 2-{(4-{ethyl[(3-sulfonatophenyl)methyl]amino}phenyl)[4-{ethyl[(3-sulfonatophenyl)methyl]iminio}cyclohexa-2,5-dien-1-ylidene]methyl}-5-hydroxybenzene-1-sulfonate as the counterion. Used as a substitute for Light green SF yellowish in Masson's trichrome as it is less likely to fade, and is more brilliant in colour. Also used as a food colouring agent. It has a role as a fluorochrome, a histological dye and a food colouring. It contains a Fast green FCF(2-). — ChEBI

IUPAC name
disodium;2-[[4-[ethyl-[(3-sulfonatophenyl)methyl]amino]phenyl]-[4-[ethyl-[(3-sulfonatophenyl)methyl]azaniumylidene]cyclohexa-2,5-dien-1-ylidene]methyl]-5-hydroxybenzenesulfonate
Molecular formula
C37H34N2Na2O10S3
Molecular weight
808.9 g/mol
Exact mass
808.11709737 Da
Topological polar surface area
223.0 Ų
Hydrogen-bond donors
1
Hydrogen-bond acceptors
11
Covalent units
3
Defined stereocentres
0

Also known as

Food green 3Solid Green FCFFood Green No. 3FD & C Green no. 3C.I. Food Green 3C.I. 42053Zelen Stala FCFAizen Food Green No. 3
16 more reported names
C.I. FOOD GREEN 3, DISODIUM SALTZelen potravinarska 33P3ONR6O1SCHEBI:82468Green No. 3FDC Green No. 3F D & C Green No. 3RefChem:140009FD&C Green No. 3FAST GREEN FCF [MI]Fast Green FCF (Technical Grade)5-[[4-[ethyl-[(3-sulfophenyl)methyl]amino]phenyl]-[4-[ethyl-[(3-sulfophenyl)methyl]azaniumylidene]cyclohexa-2,5-dien-1-ylidene]methyl]-2-hydroxybenzenesulfonateSodium 2-((4-(ethyl(3-sulfonatobenzyl)amino)phenyl)(4-(ethyl(3-sulfonatobenzyl)iminio)cyclohexa-2,5-dien-1-ylidene)methyl)-5-hydroxybenzenesulfonate1724 GreenZelen Stala FCF [Czech]Sodium 2-((E)-(4-(ethyl(3-sulfonatobenzyl)amino)phenyl)((E)-4-(ethyl(3-sulfonatobenzyl)iminio)cyclohexa-2,5-dien-1-ylidene)methyl)-5-hydroxybenzenesulfonate
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External database identifiers

Retrieved from NIH PubChem on 2026-09-02 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 assessmentsFDA Global Substance Registration SystemILO/WHO International Chemical Safety CardsJapan NITE-CHRIPNIOSH Pocket Guide to Chemical HazardsOECD eChemPortalUS 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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