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Moumoujus

SOLVENT RED 24.

Avoid CAS 85-83-6 / COLORANT

SOLVENT RED 24 is an oil-soluble azo dye, primarily employed for its ability to impart a red color to nonpolar substances. Its application is predominantly in industrial sectors and for biological staining, rather than cosmetic use.

Summary

Science

Mechanism of Action

As a fat-soluble azo dye, SOLVENT RED 24 functions by staining nonpolar materials such as oils, waxes, and hydrocarbon-based substances. In biological contexts, it is utilized to visualize triglycerides in frozen sections and may also stain certain protein-bound lipids.

Research

Clinical Evidence

Insufficient-data confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH 6 – 8
0 7 14

Stability

This compound demonstrates robust stability, exhibiting good resistance to heat (stable up to 200°C, melting point 184-185°C), light, and weathering. It maintains integrity under standard temperatures and pressures, and resists 5% hydrochloric acid and 5% sodium carbonate solutions.

Conflicts

  • strong oxidizers
  • strong reducing agents
  • excess heat

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk High

SOLVENT RED 24 is expressly not approved for use in cosmetic formulations. It is categorized by IARC as Group 3, indicating it is not classifiable as to its carcinogenicity in humans. Mutation data has been reported, and ongoing toxicological research is exploring potential carcinogenic, mutagenic, and teratogenic effects, though current evidence is limited.

Your Skin

Skin Compatibility

No Normal
No Dry
No Oily
No Sensitive
Irritancy High
Comedogenicity High

Our Assessment

Verdict

Avoid

Due to its explicit prohibition in cosmetics, high irritancy, and comedogenicity, SOLVENT RED 24 is unsuitable for skincare formulations.

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