CI 26100 (sudan III)
Official label name (INCI name, EU glossary of cosmetic ingredient names), No 6388
- Prohibited in hair dyes (Annex II)
- Colorant allowed under conditions (Annex IV)
CI 26100 (sudan III): Prohibited in hair dyes (Annex II, entry 1353); colorant allowed under conditions, with limits depending on the product type (Annex IV, entry 51), under Regulation (EC) No 1223/2009.
In plain words
What it is used for
Functions declared by manufacturers:
Colorant: colours cosmetics and/or imparts colour to the skin and/or its appendages.
What the rules say
Prohibited as a substance in hair dye products. This entry does not cover other uses, which may fall under another annex.
An ingredient can be used as a colorant only if it appears on the list of Annex IV. <function plain_language.<locals>.name at 0x7f7805a65260> is on it with a maximum concentration and with a warning to print.
The text of the annexes
Prohibited in hair dyes
CosIng links the name CI 26100 to this entry. The cases of prohibition are explained above, in “In plain words”; the official title is given below.
- Entry
- Annex II, No 1353
- Substance
- 1-((4-Phenylazo)phenylazo)-2-naphthol (Solvent Red 23; CI 26100) when used as a substance in hair dye products
- CAS
- 85-86-9
- EC
- 201-638-4
Dates in the act (3)
- Entry into force on 15 May 2013
- Application from 11 July 2013
It shall apply from 11 July 2013.
- Entry into force on 11 July 2013
Excerpts from the English text published in the Official Journal. A date may concern only some substances of the act: the excerpt says so.
Colorant allowed under conditions
- Entry
- Annex IV, No 51
- Substance
- 1-(4-(Phenylazo)phenylazo)-2-naphthol
- Glossary names
- CI 26100 /SOLVENT RED 23
- CAS
- 85-86-9
- EC
- 201-638-4
- Maximum concentration
- Not to be used in products applied on mucous membranes
- Warnings
- Purity criteria: anilin
Dates in the act (10)
- Entry into force on 11 January 2010
- Application from 1 December 2010
It shall apply from 11 July 2013, with the exception of: — Article 15(1) and (2) which shall apply from 1 December 2010, as well as Articles 14, 31 and 32 to the extent that they are necessary to apply Article 15(1) and (2); and — Article 16(3) second subparagraph, which shall apply from 11 January 2013.
- Entry into force on 1 December 2010
- Condition applicable from 11 January 2012
As from 11 January 2012, by way of derogation from Directive 76/768/EEC, notification carried out in accordance with Article 13 of this Regulation shall be considered to comply with Article 7(3) and Article 7a(4) of that Directive
- Application from 11 January 2013
July 2013, with the exception of: — Article 15(1) and (2) which shall apply from 1 December 2010, as well as Articles 14, 31 and 32 to the extent that they are necessary to apply Article 15(1) and (2); and — Article 16(3) second subparagraph, which shall apply from 11 January 2013.
- Entry into force on 11 January 2013
- Application from 11 July 2013
It shall apply from 11 July 2013, with the exception of: — Article 15(1) and (2) which shall apply from 1 December 2010, as well as Articles 14, 31 and 32 to the extent that they are necessary to apply Article 15(1) and (2); and — Article 16(3) second subparagraph, which shall appl
- Entry into force on 11 July 2013
- Placing on the market before 11 July 2013
Article 39 Transitional provisions By way of derogation from Directive 76/768/EEC, cosmetic products which comply with this Regulation may be placed on the market before 11 July 2013.
- Placing on the market from 11 July 2013
As from 11 July 2013, a distributor who makes available in a Member State a cosmetic product already placed on the market in another Member State and translates, on his own initiative, any element of the labelling of that product in order to comply with national law, shall submit, by electronic means, the following info
Excerpts from the English text published in the Official Journal. A date may concern only some substances of the act: the excerpt says so.
Identity
- CosIng identifier
- 32744
- CAS (according to CosIng)
- 85-86-9
- EC (according to CosIng)
- 201-638-4
- Declared functions
- Colorant
- Wikidata
- Q1187765
- ECHA InfoCard
- 100.001.490
The CAS number cited by CosIng also covers 1 other INCI name: it designates a family of substances, not this ingredient alone.
EU product alerts (Safety Gate)
1 alert on cosmetic products cite this name in their hazard description. An alert targets a specific product, not the ingredient itself; each alert states the reason (prohibited substance, limit exceeded, missing labelling, and so on).
- 5 August 2016: Hair dye pomade, Morgan's Pomade, Sweden (“Serious risk”) alert
Elsewhere in the world
Information on other jurisdictions. What is covered, and what is not yet.
United Kingdom (Great Britain)
- Prohibited in hair dyes (Annex II)
- Colorant allowed under conditions (Annex IV)
Same entries as in the European Union. Conditions (concentrations, warnings) may differ: they are not compared here.
Switzerland
Regulation (EC) No 1223/2009 applies in Switzerland (Article 54 of the Ordinance on Foodstuffs and Utility Articles).
United States, federal rules
None of the integrated sections of the federal code (21 CFR 700.11 to 700.27 and 250.250) targets this name. The FDA does not publish a list of allowed ingredients.
South Korea
- Allowed colorant: 적색 225 호 (수단 Ⅲ, Sudan III)* CI 26100 (Sudan III)
색소 고시 별표 1 (allowed colorants), entry 11, page 1. Conditions (source text, in Korean): 눈 주위 및 입술에 사용할 수 없음 | 비고: 타르색소
China
- Prohibited: 1-（（4-苯偶氮）苯偶氮）-2-萘酚 （溶剂红 23；CI 26100） (Solvent Red 23 （CI 26100） （CAS No. 85-86-9）)
表1 化妆品禁用原料目录 (prohibited substances, 2021年第74号), entry 1141, page 附件2 (.doc) table row 1141 ; TID reprint p.43.
Brazil
- Prohibited: 1-((4-fenilazo)fenilazo)-2-naftol (CI 26100), quando usado como substância que entra na composição de corantes capilares
RDC 529/2021, Anexo (prohibited substances), entry 1353, page 47. Conditions (source text, in Portuguese): N° UE: 1353
Recorded cosmetics that contain it
21 recorded products list it, according to Open Beauty Facts contributors. Records are dated: the formula may have changed. See the list (page in French).
Glossary: Commission Implementing Decision (EU) 2025/1175. Page updated on 21 October 2026.