CI 13015

 CI 13015 – Bulk Monoazo Colorant for Cosmetic Formulations

CI 13015 (Disodium 2‑amino‑5‑[(4‑sulfonatophenyl)azo]benzenesulfonate), also known as Acid Yellow 9 or Fast Yellow SX, is a vibrant synthetic azo colorant used in hair, skin, nail, and cosmetic applications. Approved under EU CosIng and FDA regulatory frameworks for cosmetic use

What Makes CI 13015 Essential for Cosmetics?

• Provides bright yellow pigmentation in formulations—soaps, shampoos, nail lacquers, and hair serums .
• High-performing monoazo dye with reliable stability, color fastness, and compatibility in both aqueous and emulsified systems.
• Exists in FDA and EU regulatory positive lists for cosmetic colorants, with specified maximum concentrations by Annex IV

Technical Specifications & Safety

• CAS Number: 2706‑28‑7; EC/EINECS: 220‑293‑0
• Molecular formula: C₁₂H₉N₃Na₂O₆S₂; molecular weight ~401.33 g/mol
• Classified as Low–Moderate hazard by EWG (concerns: cancer, allergy, developmental toxicity—low)
• Not bioaccumulative; non-toxic to aquatic ecosystems.

Ideal for B2B Cosmetic Clients

• Formulators of shampoos, body washes, and color cosmetics
• Hair dye and nail polish manufacturers seeking consistent colorants
• OEM/ODM partners producing private-label personal care products
• Regulatory specialists needing compliant dyes under EU and FDA guidelines

Why Source CI 13015 via Pharmint?

• Bulk availability from certified industrial dye manufacturers.
• Full technical documentation: COA, MSDS, purity ≥95%.
• Supports EU Annex IV compliance, FDA-approved thresholds, and global export logistics.
• Ideal for color cosmetics OEM, hair care brands, nail lacquer producers, and cosmetic OEMs.

CI 13015 FAQs 

Is CI 13015 approved for use in leave-on and rinse-off cosmetics?

CI 13015 is permitted in rinse-off products in both EU (Annex IV) and FDA listings. For leave-on applications, formulation limits may apply depending on jurisdiction. Always consult local regulations.

Can CI 13015 be used in natural or clean-label formulations?

CI 13015 is a synthetic monoazo dye and not classified as natural or clean-label compliant. It’s typically excluded from “green” or organic cosmetic certifications like COSMOS or ECOCERT.

Does CI 13015 require special labeling on cosmetic packaging?

Yes, CI 13015 must be listed in the ingredient declaration on cosmetics under its Colour Index number, especially in regions like the EU and USA where INCI compliance is required.

What are the solubility and formulation compatibility properties?

CI 13015 is water-soluble and compatible with a range of aqueous systems. It is commonly used in emulsions, surfactant systems, and semi-solid formulations like gels and lotions.

Are there allergenic or environmental concerns linked to CI 13015?

CI 13015 has a low hazard profile with minimal allergenicity. It’s considered non-bioaccumulative and environmentally safe in permitted concentrations, but eco-labels may still restrict it.