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Pigment yellow 1

CAS 2512-29-0 · 20/100 · High conf.

Also registered as 7 other CAS numbers

1089943-13-4 · 7383-22-4 · 11129-85-4 · 39310-24-2 · 102723-11-5 · 106177-71-3 · 477904-35-1

Concern score

20/100Minor concern based on regulatory listings.
High confidence

Pigment yellow 1 in plain language

What it is

On cosmetic ingredient lists it appears as “CI 11680”.

Also known as CI 11680 · C.I. Pigment Yellow 1 · .alpha.-(o-nitro-p-tolylazo)acetoacetanilide · C.I. 11680 · Japan yellow no. 401 · Pigment fast yellow

Show all 23 names

Pigment lightfast yellow · Pigment yellow 1, (±)- · Toluidine yellow · Accosperse Hansa Yellow G · Azo · Hancock yellow g · Hansa yellow g · Jaune covanor w 1605 · Monoazo · Monoazo dispersion · Pigment yellow 1, (+/-)- · Sanyo fast yellow g · azo dye · hansa yellow · organic yellow (sara iii) · yellow pigment · α-(o-Nitro-p-tolylazo)acetoacetanilide

What it does

Used in cosmetics as a colourant. CI 11680 is classed chemically as a monoazo colour.

  • Colorant
  • Colourant
Is it a concern?
Minor concern: no hazard classifications on record. It is listed for cosmetic use in the EU.

What the listings say

Permitted, with conditions — Pigment yellow 1 appears on published "allowed" regulatory lists rather than on a restriction list.

2-[(4-Methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide is listed in Annex IV of the EU Cosmetics Regulation (EC) 1223/2009 (colorants allowed in cosmetic products).

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

No restrictions found. Pigment yellow 1 appears in these published regulatory listings.

  • EU Annex IV — permitted colorant
  • EU permitted colorant

Recorded in these product areas

  • Found in consumer products
  • Cleaning
  • Industrial
  • EUCosIngActive3 entries
    • Cosmetics Regulation annex IV / ref 4.Source →
    • CI 11680 is classed chemically as a monoazo colour. It conforms to the formula: Restriction: IV/4Source →
    • Pigment Yellow 1 is classed chemically as a monoazo color. It conforms to the formula (To identify the colorant allowed for use in the European Union (EU), the INCI Name CI 11680 must be used, except for hair dye product)Source →
  • EUECallowed_listedAnnex IV of EU Cosmetics Regulation (EC) 1223/2009: colorants allowed in cosmetic products. Maximum concentration: Not to be used in products applied on mucous membranes
    • Annex IV of EU Cosmetics Regulation (EC) 1223/2009: colorants allowed in cosmetic products. Maximum concentration: Not to be used in products applied on mucous membranesSource →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 14 composition records across product categories including Specialty occupational products, Home maintenance, Cleaning products and household care. EPA CPDat classifies this chemical for functional uses including Dye, Pigment, titanium dioxides.
    • EPA CPDat observed this chemical in 14 composition records across product categories including Specialty occupational products, Home maintenance, Cleaning products and household care. EPA CPDat classifies this chemical for functional uses including Dye, Pigment, titanium dioxides.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 Pigment yellow 1. 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 Pigment yellow 1 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 January 7, 2008

    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 →

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

No fragrance-linked caution surfaced in the current profile.

Good fit

This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.

Where it has been recorded

How often EPA CPDat has listed Pigment yellow 1 in a product composition. These are source records, not Greenveil catalog products.

Source records

14

Named organisations

6

Specialty occupational productsHome maintenanceCleaning products and household care

Typical roles

ColorantColourant
See products using Pigment yellow 1 →

Catalog

Found in these products

Their ingredient lists include Pigment yellow 1; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 24 →Find products without it →