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Ponceau sx

CAS 1016649-45-8 · 100/100 · High conf.

Also registered as 1 other CAS number

4548-53-2

Concern score

100/100Critical concern based on regulatory listings.
High confidence

Ponceau sx in plain language

What it is

On cosmetic ingredient lists it appears as “CI 14700”.

Also known as CI 14700 · Ponceaux sx (CI 14700) · FD&C red no. 4 · FD&C Red 4 · AKA504 · Red 4

Show all 14 names

Crimson 4R · Fdc red no. 4 · Food red 1 · Scarlet gn · C.I. Red 4 · c.i. food red 1 · fd & c red no. 4 · red dye

What it does

Used in cosmetics as a colourant and a hair dye. CI 14700 is classed chemically as a monoazo colour.

  • Colorant
  • Hair dyeing
  • Colourant
  • Fragrance
Is it a concern?
Critical concern: no hazard classifications on record. It is banned in EU cosmetics.

Why it's flagged

Disodium 3-[(2,4-dimethyl-5-sulphonatophenyl)azo]-4-hydroxynaphthalene-1-sulphonate (Ponceaux SX; CI 14700) when used as a substance in hair dye products is prohibited in cosmetic products under Annex II of the EU Cosmetics Regulation (EC) 1223/2009.

RestrictedEU EC — banned

The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.

Regulation

Restrictions first, then routine listings from published regulatory sources.

  • EU Annex II — prohibited
  • EU Annex IV — permitted colorant
  • EU permitted colorant
  • EU prohibited in cosmetics

Recorded in these product areas

  • Found in consumer products
  • Beauty
  • Cleaning
  • Industrial

  • EUEC

    Annex II of EU Cosmetics Regulation (EC) 1223/2009: substances prohibited in cosmetic products.

    banned
    View source →
  • EUCosIngActive4 entries
    • CI 14700 is classed chemically as a monoazo colour. It conforms to the formula: Restriction: IV/18 ( CI 14700) II/1341 (Ponceau SX; CI 14700: when used as a substance in hair dye products)Source →
    • Cosmetics Regulation annex IV / ref 18.Source →
    • Cosmetics Regulation annex II / ref 1341.Source →
    • Ponceau SX is classed chemically as a monoazo colour. It conforms to the formula: Restriction: II/1341 (Ponceau SX; CI 14700: when used as a substance in hair dye products)Source →
  • EUECallowed_listedAnnex IV of EU Cosmetics Regulation (EC) 1223/2009: colorants allowed in cosmetic products.
    • Annex IV of EU Cosmetics Regulation (EC) 1223/2009: colorants allowed in cosmetic products.Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 449 composition records across product categories including Personal care, Laboratory supplies, Cleaning products and household care. EPA CPDat classifies this chemical for functional uses including Dye, Fragrance.
    • EPA CPDat observed this chemical in 449 composition records across product categories including Personal care, Laboratory supplies, Cleaning products and household care. EPA CPDat classifies this chemical for functional uses including Dye, Fragrance.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

No expert opinion on file for Ponceau sx. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

  • SCCS

    EU Scientific Committee on Consumer Safety

    No SCCS opinion on file.

  • CIR

    Cosmetic Ingredient Review (US expert panel)

    No CIR safety assessment on file.

Evidence & sources

No graded research studies for Ponceau sx yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

6 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →

  • EU CosIng Cosmetics Regulation Annexes

    regulatory · updated 2020-08-13

    Open →

  • EPA Chemical and Products Database

    exposure · updated september 3, 2013

    Open →

  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →

  • FDA GSRS UNII

    registry · updated 2026-02-26

    Open →

  • openFDA Substance

    registry · updated 2026-05-24

    Open →
Reference links (1)
Openfda substance

en.wikipedia.org

Read →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Food use

Food-use source coverage is present in the current record.

Good fit

The ingredient appears in food-oriented source coverage or allowed-use references, which makes food use easier to support than a context with no domain signal at all.

Fragrance avoidance

Not a strong fit for fragrance avoidance because it carries Fragrance.

Avoid

The ingredient itself is a fragrance-linked signal, so it is better treated as an avoid case when fragrance exposure is the main concern.

Where it has been recorded

How often EPA CPDat has listed Ponceau sx in a product composition. These are source records, not Greenveil catalog products.

Source records

449

Named organisations

6

Personal careLaboratory suppliesCleaning products and household careConstruction

Typical roles

ColorantHair dyeingColourantFragrance
See products using Ponceau sx →

Catalog

Found in these products

Cosmetic and personal-care products that list Ponceau sx are shown first. Their ingredient lists include Ponceau sx; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 391 →Find products without it →

Co-occurrence

Often appears with

Ingredients that frequently appear alongside Ponceau sx in the catalog.