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Cosmetic ingredient (INCI)

Direct Red 81

Used in cosmetic products as hair dyeing. Disodium 7-benzamido-4-hydroxy-3-[[4-[(4-sulphonatophenyl)azo]phenyl]azo]naphthalene-2-sulphonate (CI 28160)

Listed in several EU annexes
  • Prohibited in EU cosmetics, Annex II/1267
  • Prohibited in EU cosmetics, Annex II/1270

The chemical behind this ingredient

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

C.I. Direct Red 81 disodium salt chemical structure, C29H19N5Na2O8S2, CAS 2610-11-9
C.I. Direct Red 81 disodium salt
CAS 2610-11-9C29H19N5Na2O8S2
21 suppliers
C.I. Direct Red 81 disodium salt

IUPAC name: disodium, 7-benzamido-4-hydroxy-3-[[4-[(4-sulfonatophenyl)diazenyl]phenyl]diazenyl]naphthalene-2-sulfonate

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

Direct Red 81 suppliers

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Frequently asked questions

What is Direct Red 81 used for in cosmetics?

Direct Red 81 is used in cosmetic products as hair dyeing. Disodium 7-benzamido-4-hydroxy-3-[[4-[(4-sulphonatophenyl)azo]phenyl]azo]naphthalene-2-sulphonate (CI 28160)

Is Direct Red 81 restricted in cosmetics in the EU?

Direct Red 81 is listed in the annexes of EU Cosmetics Regulation (EC) No 1223/2009: Annex II/1267 (prohibited in eu cosmetics), Annex II/1270 (prohibited in eu cosmetics). Always check the full annex entry for the conditions of use.

What is the CAS number of Direct Red 81?

Direct Red 81 is listed with CAS number 2610-11-9 and EC number 220-028-9.

Where can I buy Direct Red 81?

8 suppliers list C.I. Direct Red 81 disodium salt on CompoundList. Compare them below or post a buy request with your grade and quantity.