CI 26100

Sudan III is a bis(azo) compound that is 2-naphthol substituted at position 1 by a 4-{[(2-methylphenyl)diazenyl]phenyl}diazenyl group. A fat-soluble dye predominantly used for demonstrating triglycerides in frozen sections, but which may also stain some protein bound lipids in paraffin sections. It has a role as a carcinogenic agent, a fluorochrome and a histological dye. It is a member of azobenzenes, a member of naphthols and a bis(azo) compound. It is functionally related to a 2-naphthol.

Source: PubChem

US FDA substance register · UNII ND733RX3JN · registered name D&C RED NO. 17 · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

CI 26100 is classed chemically as a disazo colour. It conforms to the formula:

Banned

China · European Union · United Kingdom

Restricted or banned

China · European Union · Taiwan

Restricted

European Union · Japan · South Korea · Taiwan · United States

Allowed colourant

Taiwan · United States

Source: ASEAN Cosmetic Directive · EU Cosmetics Regulation · MFDS (Korea) cosmetic regulatory information · UK cosmetics regulations (OPSS) · Health Canada Cosmetic Ingredient Hotlist · Taiwan FDA cosmetic ingredients · US FDA prohibited and restricted ingredients

Argentina · Brazil

• Field of application and/or use : Dye Substances allowed exclusively in products that do not have contact with mucosa in regular and predictable use conditions.
• Other limitations and requirements : Purity criteria: cortado

ASEAN

• Field of application : Colouring agents allowed exclusively in cosmetic products intended not to come into contact with the mucous membranes
• Other limitations and requirements : Purity criteria: aniline  0.2% 2-naphtol  0.2% 4-aminoazobenzene  0.1% 1-(phenylazo)-2-naphtol  3% 1-[2-(phenylazo)phenylazo]-2-naphtalenol  2%

Canada

• Conditions of Use by product type : (a) Not permitted in cosmetics intended to be used on or around mucosal membranes such as eyes, nose or mouth. Additionally see "Coal tar dye". (b) Hair dye product c) Other cosmetics
• Warnings and Cautionary Statements: (to the effect of) : (b) “Do not use to dye eyelashes or eyebrows.” “Do not use in or around the area of the eye, mouth or nose.” c) “Do not use in or around the area of the eye, mouth or nose.”

Not classified under Korea’s toxic-substance GHS list · existing chemical substance

Source: Korea toxic substances GHS register (NIER)

EU Cosmetics Regulation, Annex IV (allowed colourants), entry 51 · maximum concentration Not to be used in products applied on mucous membranes

Source: EU allowed colourants (Annex IV)

EU Cosmetics Regulation, Annex II (prohibited substances), entry 1353

Source: EU prohibited substances (Annex II)

Restriction II/1353 (Solvent Red 23; CI 26100: when used as a substance in hair dye products) · SCCS opinion: Opinion on CI 26100 (Solvent Red 23 not defended as hair dye)

Source: EU CosIng ingredient list

Restriction IV/51 (CI 26100) II/1353 (Solvent Red 23; CI 26100: when used as a substance in hair dye products) · SCCS opinion: Opinion on CI 26100 (Solvent Red 23 not defended as hair dye)

Source: EU CosIng ingredient list