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Annex III Entry 263 09/09/2013

Disperse Black 9

Ethanol, 2,2′-[[4-[(4-aminophenyl) azo]phenyl]imino]bis-

Disperse Black 9 is listed in Annex III and may only be used under the conditions shown in this record. Maximum concentration in this record: 0,3% (of the mixture in the ratio 1:1 of 2,2' -[4-(4-aminopheny-lazo)pheny-limino]diethanol and lignosulfate).

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Restricted substance— Annex III, EU Regulation 1223/2009
Max conc.: 0,3%
Entry: 263

Chemical identity and properties

PubChem 2D chemical structure for CAS 20721-50-0
CAS 20721-50-0PubChem CID 88669

Disperse Black 9

Disperse Black 9 is an organic molecular entity. It has a role as a dye. — ChEBI

IUPAC name
2-[4-[(4-aminophenyl)diazenyl]-N-(2-hydroxyethyl)anilino]ethanol
Molecular formula
C16H20N4O2
Molecular weight
300.36 g/mol
Exact mass
300.15862589 Da
XLogP3
1.8
Topological polar surface area
94.4 Ų
Hydrogen-bond donors
3
Hydrogen-bond acceptors
6
Covalent units
1
Defined stereocentres
0

Also known as

2,2'-((p-((p-Aminophenyl)azo)phenyl)imino)diethanol7GKC99M24TCOLOREX DBL9LOWADENE BLACK 9Ethanol, 2,2'-[[4-[(4-aminophenyl)azo]phenyl]imino]bis-EINECS 243-987-52,2'-((4-((4-Aminophenyl)azo)phenyl)imino)bisethanol2,2'-[[4-[(4-aminophenyl)azo]phenyl]imino]bisethanol
16 more reported names
2,2'-((4-((4-Aminophenyl)azo)phenyl)imino)bis(ethanol)Ethanol, 2,2'-((4-((4-aminophenyl)azo)phenyl)imino)bis-Ethanol, 2,2'-((4-(2-(4-aminophenyl)diazenyl)phenyl)imino)bis-2,2'-[4-(4-Aminophenylazo)phenylimino]diethanol4-(4'-ANILINOAZO)-N,N-BIS(2-HYDROXYETHYL)ANILINE4-AMINO-4'-(BIS(.BETA.-HYDROXYETHYL)AMINO)AZOBENZENEEthanol, 2,2'-[[4-[2-(4-aminophenyl)diazenyl]phenyl]imino]bis-2,2'-(4-(4-aminophenylazo)phenylimino)diethanolRefChem:589574DISPERSE BLACK 9 [INCI]4-AMINO-4'-(BIS(BETA-HYDROXYETHYL)AMINO)AZOBENZENE810-919-6C.I. Disperse Black 92,2'-((4-((4-Aminophenyl)diazenyl)phenyl)azanediyl)diethanol2,2'-4-(4-Aminophenyl)azophenyliminobis(ethanol)UNII-7GKC99M24T
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

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

Record details

Maximum concentration

0,3% (of the mixture in the ratio 1:1 of 2,2' -[4-(4-aminopheny-lazo)pheny-limino]diethanol and lignosulfate)

Product type

Hair dye substance in non-oxidative hair dye products

INCI glossary name

Disperse Black 9

Chemical name

Ethanol, 2,2′-[[4-[(4-aminophenyl) azo]phenyl]imino]bis-

Chemical / IUPAC name

Ethanol, 2,2′-[[4-[(4-aminophenyl) azo]phenyl]imino]bis-

Regulatory information

Regulation

(EU) 2013/658

See every entry this act set

Key data

CAS
20721-50-0
EC
243-98-5
Annex
III
Entry number
263

Inventory links for Disperse Black 9

Annex III 190
Shared product type

ACID BLUE 9

CAS: 3844-45-9 - 2650-18-2 - 68921-42-6
EC: 223-339-8 - 220-168-0 - 272-939-6
Annex III 191
Shared product type

CURRY RED

CAS: 25956-17-6
EC: 247-368-0
Annex III 192
Shared product type

ACID RED 18

CAS: 2611-82-7 - 12227-64-4
EC: 220-036-2 - 235-438-3
Annex III 193
Shared product type

ACID RED 52

CAS: 3520-42-1
EC: 222-529-8
Annex III 195
Shared product type

ACID BLUE 62

CAS: 4368-56-3
EC: 224-460-9
Annex III 204
Shared product type

DIHYDROXYINDOLINE

CAS: 29539-03-5 - 138937-28-7
EC: - - 421-170-6

What Annex III means for Disperse Black 9

Disperse Black 9 is a restricted substance under Annex III of EU Cosmetics Regulation 1223/2009. Its use in cosmetics is only permitted under the specific conditions set out in the entry above, including applicable concentration limits, product type restrictions and required warning statements.

When including this substance in a formulation, all conditions — maximum concentration, product scope and warning labels — must be met simultaneously. Compliance with one condition does not override the others.

This record is linked to 1 CosIng inventory ingredient for name and identifier cross-reference. The page also surfaces 12 related annex records with overlapping identifiers, annex logic or naming patterns.

Compliance checklist

  • Ensure formulation concentration does not exceed: 0,3% (of the mixture in the ratio 1:1 of 2,2' -[4-(4-aminopheny-lazo)pheny-limino]diethanol and lignosulfate)
  • Confirm product type compatibility: Hair dye substance in non-oxidative hair dye products
  • Document conditions of use in the Product Information File (PIF).

Frequently asked questions

Disperse Black 9 is listed in Annex III of EU Regulation 1223/2009 as a restricted substance. It may only be used under the conditions specified in the entry, including any maximum concentration, product type limitation and required warning statements shown above.

CAS 20721-50-0 is the unique numerical identifier assigned to Disperse Black 9 by the Chemical Abstracts Service. In cosmetic compliance work, the CAS number is used to cross-reference the substance across regulatory databases, raw material specifications and safety assessment reports. Multiple EU annex entries may share the same CAS number if the same substance appears under different conditions or in different annexes.

The maximum concentration of 0,3% (of the mixture in the ratio 1:1 of 2,2' -[4-(4-aminopheny-lazo)pheny-limino]diethanol and lignosulfate) applies to the concentration of the substance in the ready-to-use cosmetic product. When the substance is supplied as part of a blend or mixture, the calculation must account for the contribution of all sources in the formulation. The combined concentration must not exceed the stated limit.

Use the INCI Checker tool on this site to paste your full ingredient list (INCI) and scan it against all Annex II–VI entries. The tool highlights any ingredients that match restricted, prohibited or allergen-flagged records. This is useful for rapid compliance screening of finished product formulas or raw material declarations.
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Source note for Annex III record Disperse Black 9

This page summarizes one Annex III record for Disperse Black 9 from public European Commission cosmetic materials and adds linked inventory or identifier matches when available.

Use this record page to review Annex III conditions for Disperse Black 9, but confirm any final regulatory decision against the current official annex wording and source files.

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