CompoundList
Cosmetic ingredient (INCI)

CI 21100

Used in cosmetic products as colorant. CI 21100 is classed chemically as a disazo colour.

Listed in several EU annexes
  • Prohibited in EU cosmetics, Annex II/1351
  • Allowed colorant, Annex IV/47

Annex IV/47: Rinse-off products

The chemical behind this ingredient

Structure, properties, safety data and price information live on the chemical page.

Diarylide yellow chemical structure, C36H34Cl2N6O4, CAS 5102-83-0
Diarylide yellow
CAS 5102-83-0C36H34Cl2N6O4
37 suppliers
Diarylide yellow

IUPAC name: 2-[[2-chloro-4-[3-chloro-4-[[1-(2,4-dimethylanilino)-1,3-dioxobutan-2-yl]diazenyl]phenyl]phenyl]diazenyl]-N-(2,4-dimethylphenyl)-3-oxobutanamide

  • 2D structure and identifiers
  • Measured and computed properties
  • GHS safety summary
  • Suppliers, prices and trade data

CI 21100 suppliers

Companies with live listings for the linked chemical. Paid members appear first.

Frequently asked questions

What is CI 21100 used for in cosmetics?

CI 21100 is used in cosmetic products as colorant. CI 21100 is classed chemically as a disazo colour.

Is CI 21100 restricted in cosmetics in the EU?

CI 21100 is listed in the annexes of EU Cosmetics Regulation (EC) No 1223/2009: Annex II/1351 (prohibited in eu cosmetics), Annex IV/47 (allowed colorant). Annex IV/47: Rinse-off products Always check the full annex entry for the conditions of use.

What is the CAS number of CI 21100?

CI 21100 is listed with CAS number 5102-83-0 and EC number 225-822-9.

Where can I buy CI 21100?

8 suppliers list Diarylide yellow on CompoundList. Compare them below or post a buy request with your grade and quantity.