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The material selection platform
Cosmetics Ingredients
The material selection platform
Cosmetics Ingredients

CI 26100

CAS Number 85-86-9
Chem/IUPAC Name: C-Ext. Rot 56, D&C Red No. 17,1-[4-(phenylazo)phenylazo]-1-Naphtol,Solvent Red 23,Sudan III,Red 17 (CI 26100)
EINECS/ELINCS No: 201-638-4
COSING REF No: 32744
CI 26100
Solvent red 23 (C22H16N4O) is also known as CI 26100 and used as a colorant in cosmetic product formulations. It has a molecular weight of 352.396.

What is CI 26100 used for?

As a cosmetic colorant, CI 26100 is used to impart a red color to cosmetic formulations. It is commonly used in hair treatment/serum, polish remover, nail polish, facial moisturizer/treatment, body oil, mask, hair color and bleaching, body spray, nail treatment, bar soap, serums & essences, fragrance for women, hair styling aide, recreational sunscreen, sunless tanning, tanning oil, fragrance for men.

Origin

CI 26100 is synthetically made by coupling aminoazobenzene with β-naphthol.

What does CI 26100 do in a formulation?

  • Cosmetic colorant

Safety profile

According to EWG, CI 26100 scored 2-6. This ingredient’s score is higher if used in products intended for damaged skin, around mouth, on lips, around the eyes due to increased risk of absorption. It is suspected to be an environmental toxin and be persistent or bioaccumulative. In few studies it has been found to cause weak endocrine disruption.

Technical profile

Property Values
Boiling Point 584.6°C
Melting Point 195°C
Specific Gravity 1.2266
Solubility Insoluble in water
Soluble in methanol, ethanol, DMSO and other organic solvents
6

Commercial Selection : Grades containing solely CI 26100

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