Get a Free 5ml Mini Now Free 5ml Mini With Every Order of The Mantle
Moumoujus

CI 19140.

Optional CAS 1934-21-0 / COLORANT, HAIR DYEING

CI 19140, also known as Tartrazine, is a synthetic lemon yellow azo dye. It is primarily used as a colorant to impart a yellow hue to cosmetic products, hair, or nails.

Summary

Colorant

Science

Mechanism of Action

As a synthetic azo dye, CI 19140 functions by directly depositing yellow pigment onto the skin, hair, or nails. It serves as a cosmetic colorant or a functional fragrance ingredient.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 2 – 11
0 7 14

Stability

CI 19140 is stable across a wide pH range (2-11), and to heat, light, acid, and salt. However, it exhibits poor oxidation resistance and can degrade photocatalytically, potentially forming impurities.

Conflicts

  • strong oxidizing agents
  • alkali (pH > 11)
  • reducing agents
  • photocatalytic degradation

Safety

Safety Profile

CIR Status
Unknown
Max tested
0.5%
Sensitization risk Moderate

Approved by FDA for food, drugs, and cosmetics, and by European regulations for all cosmetic products. While generally safe for topical use, rare allergic reactions have been reported in sensitive individuals.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Optional

CI 19140 is a widely used yellow colorant, generally safe for topical application, but offers no direct skin benefits and may provoke reactions in sensitive individuals.

Related

Similar Ingredients

Finding similar ingredients…