What does the restriction note for PONCEAU SX mean?

The restriction field for PONCEAU SX reads: II/1341 (Ponceau SX; CI 14700: when used as a substance in hair dye products). This is the restriction note from the CosIng inventory. For authoritative conditions and limits, always refer to the linked annex entries.

What other records share CAS 4548-53-2?

CAS 4548-53-2 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

How do I check if my formula contains PONCEAU SX?

Use the INCI Checker to screen a full ingredient list across selected markets, or use the substance market comparison to review this identity across all supported market datasets.

InventoryRef 3691713/08/2020

PONCEAU SX

Disodium 3-[(2,4-dimethyl-5-sulphonatophenyl)azo]-4-hydroxynaphthalene-1-sulphonate (14700)

PONCEAU SX is linked to 2 EU annex records on this page. Inventory note: II/1341 (Ponceau SX; CI 14700: when used as a substance in hair dye products).

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Regulatory evidence by market

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Market	Evidence status	Records	Source language
European Union	Evidence linked Prohibited entry found Open this evidence	2	English and EU languages
Great Britain	Source mapped Official source mapped; ingredient rule not imported	0	English
Canada	Source mapped Official source mapped; ingredient rule not imported	0	English and French
New Zealand	Source mapped Official source mapped; ingredient rule not imported	0	English
ASEAN	Source mapped Official source mapped; ingredient rule not imported	0	English and national languages
China	Source mapped Official source mapped; ingredient rule not imported	0	Chinese with selected English material
Japan	Source mapped Official source mapped; ingredient rule not imported	0	Japanese; official English translation available
South Korea	Source mapped Official source mapped; ingredient rule not imported	0	Korean with some English names
United States	Source mapped Official source mapped; ingredient rule not imported	0	English
Australia	Source mapped Official source mapped; ingredient rule not imported	0	English
Brazil	Source mapped Official source mapped; ingredient rule not imported	0	Portuguese with INCI crosswalks
India	Source mapped Official source mapped; ingredient rule not imported	0	English and Hindi
Saudi Arabia	Source mapped Official source mapped; ingredient rule not imported	0	Arabic and English

Chemical identity and properties

PubChem 2D chemical structure for CAS 4548-53-2

CAS 4548-53-2PubChem CID 62542

FD&C Red 4

IUPAC name: disodium;3-[(2,4-dimethyl-5-sulfonatophenyl)diazenyl]-4-hydroxynaphthalene-1-sulfonate

Molecular formula: C18H14N2Na2O7S2
Molecular weight: 480.4 g/mol
Exact mass: 480.00378170 Da
Topological polar surface area: 176.0 Å²
Hydrogen-bond donors: 1
Hydrogen-bond acceptors: 9
Covalent units: 3
Defined stereocentres: 0

Also known as

RefChem:200921Ponceau SXC.I. Food Red 1Food red 1Crimson 4RFD&C Red No. 4FD & C Red no. 4C.I. Food Red 1, disodium salt

16 more reported names

CI 14700FD and C Red No. 4X3W0AM1JLXC.I. 147001-Naphthalenesulfonic acid, 3-((2,4-dimethyl-5-sulfophenyl)azo)-4-hydroxy-, disodium salt3-((2,4-Dimethyl-5-sulfophenyl)azo)-4-hydroxy-1-naphthalenesulfonic acid, disodium saltRed 4Ponceau SX Lake4R purpleMaple Ponceau SX1-Naphthalenesulfonic acid, 4-hydroxy-3-((6-sulfo-2,4-xylyl)azo)-, disodium saltDisodium 3-((2,4-dimethyl-5-sulphonatophenyl)azo)-4-hydroxynaphthalene-1-sulphonatePurple 4RHexacol Ponceau SXRed shade #24Certicol Ponceau SXS

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEMBL:CHEMBL3185981
EPA DTXSID:DTXSID2021234

Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Inventory details for PONCEAU SX

INCI name

PONCEAU SX

Description

Disodium 3-[(2,4-dimethyl-5-sulphonatophenyl)azo]-4-hydroxynaphthalene-1-sulphonate (14700)

Record provenance

Inventory reference: 36917
Imported identity: PONCEAU SX
Source update: 13/08/2020

European Commission CosIng source notes

Annex records for PONCEAU SX

Annex II Restriction reference

Entry 1341

Disodium 3-[(2,4-dimethyl-5-sulphonatophenyl)azo]-4-hydroxynaphthalene-1-sulphonate (Ponceaux SX; C…

CAS: 4548-53-2

EC: 224-909-9

Annex IV Identified ingredient

Entry 18

PONCEAUX SX (CI 14700)

CAS: 4548-53-2

EC: 224-909-9

Key data

CAS

4548-53-2

224-909-9

Restriction

II/1341 (Ponceau SX; CI 14700: when used as a substance in hair dye products)

Function

HAIR DYEING: Imparting color to hair. Hair dyeing preparations may be temporary, semi-permanent, or permanent, depending on the length of time the colorant remains on the hair.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

#22475 · PONCEAU SX

Records sharing a CAS or EC identity

CI 14700

Ingredients with overlapping formulation functions

PIGMENT VIOLET 23COLORANT, HAIR DYEING

PIGMENT YELLOW 12HAIR DYEING

PIGMENT YELLOW 13HAIR DYEING

PIGMENT YELLOW 73HAIR DYEING

PYROCATECHOLHAIR DYEING

PYROGALLOLHAIR DYEING

RESORCINOLANTIOXIDANT, DENATURANT, HAIR DYEING, PERFUMING

SILVER NITRATEHAIR DYEING

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox 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

How PONCEAU SX appears in the CosIng inventory

The CosIng inventory lists PONCEAU SX as a cosmetic ingredient and this page links it to 2 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

PONCEAU SX is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

PONCEAU SX appears in the EU CosIng inventory and has linked annex records. Check the annex records above for applicable restrictions, concentration limits and conditions of use. Annex II listing means prohibited; Annex III means restricted; Annexes IV, V and VI mean permitted under specified conditions.

The restriction field for PONCEAU SX reads: "II/1341 (Ponceau SX; CI 14700: when used as a substance in hair dye products)". This is the restriction note recorded in the CosIng inventory for this ingredient. For authoritative conditions and limits, always refer to the linked annex entries above.

According to the EU CosIng inventory, PONCEAU SX carries the following function designation(s):

HAIR DYEING

CAS 4548-53-2 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

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Source note for PONCEAU SX

This page combines the CosIng inventory entry for PONCEAU SX with 2 linked Annex II–VI records from the local dataset built from public European Commission cosmetic ingredient materials.

Use this inventory page to research PONCEAU SX and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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