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Moumoujus

PIGMENT YELLOW 13.

Avoid CAS 5102-83-0 / HAIR DYEING

Pigment Yellow 13 is an organic azo diarylide pigment specifically utilized for its bright yellow coloring properties. Its chemical structure is derived from 3,3'-dichlorobenzidine.

Summary

colorant

Science

Mechanism of Action

This compound functions purely as a colorant, imparting a vibrant yellow hue by selectively absorbing and reflecting light wavelengths. It exhibits no documented biological or functional mechanism of action on the skin itself.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Commonly dusted

Material Safety Data Sheets (MSDS) explicitly advise avoiding the generation of dust during handling. This is due to the potential for respiratory and ocular irritation if inhaled or exposed to the eyes.

The Formula

Formulation

Solubility
Oil
Optimal pH 6 – 7.5
0 7 14

Stability

Pigment Yellow 13 demonstrates robust stability, exhibiting good resistance to solvents and heat, remaining stable up to 150°C, with short-term stability extending to 180-200°C. It possesses superior migration resistance compared to Pigment Yellow 12, though it may show migration tendencies in plasticized PVC. Optimal stability is maintained under normal temperature and pressure conditions, requiring dry, well-sealed storage to prevent contamination and humidity absorption.

Conflicts

  • strong oxidizing agents
  • strong reducing agents
  • excess heat (especially when high light and heat fastness are critical)

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Moderate

While generally considered non-toxic in industrial settings and REACH-certified, Material Safety Data Sheets (MSDS) for Pigment Yellow 13 indicate several potential concerns. These include possible harm if swallowed, stomach discomfort, and respiratory irritation. Direct contact may lead to eye irritation (dust) and skin irritation, particularly in sensitive individuals or with prolonged exposure. Notably, there are mentions of 'possible risks of irreversible effects'. It is crucial to distinguish this from 'HC Yellow n° 13', a hair dye with unrelated SCCS opinions.

Your Skin

Skin Compatibility

No Normal
No Dry
No Oily
No Sensitive
Irritancy Medium
Comedogenicity Unknown

Our Assessment

Verdict

Avoid

This pigment, while offering vibrant color, lacks documented benefits for skin health and presents significant safety concerns including potential irritation and 'possible risks of irreversible effects', making it unsuitable for precision skincare formulations.

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