Introduction: A Reliable UVB Protection Ingredient
Ethylhexyl Methoxycinnamate, commonly known as Octinoxate, is one of the most widely used UVB filters in the cosmetic industry. This effective organic UV absorber has been a key component of sun care formulations for decades, helping protect skin from sunburn and photoaging. Its liquid form offers excellent formulation flexibility and can be easily incorporated into a variety of cosmetic products.
While the ingredient is sometimes referred to by the brand name Uvinul MC 80, the standardized INCI name is Ethylhexyl Methoxycinnamate (Octinoxate). Understanding this distinction supports accurate technical communication and regulatory compliance.
Physicochemical Properties
| Property | Specification |
|---|---|
| INCI Name | Ethylhexyl Methoxycinnamate |
| CAS Number | 5466-77-3 |
| Molecular Formula | C₁₈H₂₆O₃ |
| Molecular Weight | 290.40 g/mol |
| Appearance | Clear to pale yellow viscous liquid |
| Purity | ≥ 98% |
| UV Absorption | λmax ~ 310 nm (UVB range) |
| Solubility | Soluble in oils and organic solvents |
| Specific Gravity | 1.00–1.05 (20°C) |
Mechanism of Action: Efficient UVB Energy Absorption
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Key Benefits: Proven Performance & Formulation Advantages
- Effective UVB Protection: Provides strong, specific absorption in the UVB range, helping prevent sunburn and reduce the risk of UV‑induced skin damage.
- Excellent Formulation Properties: Liquid form enables easy incorporation into various emulsion systems without pre‑dissolving.
- Good Solvent Capacity: Acts as a co‑solvent for other UV filters and actives, supporting formulation stability.
- Cosmetic Elegance: Helps create light‑textured, non‑greasy formulations for better consumer acceptance.
- Global Regulatory Acceptance: Approved for use in suncare products worldwide (subject to regional concentration limits).
- Cost‑Effective Performance: Delivers reliable UVB protection at a competitive cost.
Application & Formulation Guidance
1. Recommended Usage:
Concentration Range: 2.5-7.5% in final formulation (check local regulations)[1, 3]
Maximum Allowable: Typically 7.5-10% depending on regional regulations
2. Ideal Product Applications:
Broad-Spectrum Sunscreens (combined with UVA filters)
Daily Facial Moisturizers with SPF
Makeup & Foundation with Sun Protection
Lip Care Products with SPF
Anti-Aging & Day Creams
3. Formulation Tips:
Incorporate in the oil phase at room temperature or with mild heating (up to 45°C)[1]
Compatible with both O/W and W/O emulsion systems
Often used in combination with UVA filters like Avobenzone (requires stabilization)[2]
Suitable for all formulation types: sprays, lotions, creams, and sticks
Avoid formulation with strong oxidizing agents
Frequently Asked Questions (FAQ)
Q: What is the difference between Ethylhexyl Methoxycinnamate and Octinoxate?
A: They are the same compound. "Ethylhexyl Methoxycinnamate" is the INCI name, while "Octinoxate" is the United States Adopted Name (USAN). Both refer to the identical chemical substance.
Q: Why is Ethylhexyl Methoxycinnamate used in so many sunscreens?
A: Its proven efficacy, formulation flexibility, cost-effectiveness, and global regulatory acceptance make it a preferred choice for achieving effective UVB protection in cosmetic formulations.
Q: Can I use Ethylhexyl Methoxycinnamate in water-resistant formulations?
A: Yes, it can be used in water-resistant products. However, its moderate water resistance should be complemented with film-forming polymers and other water-resistant UV filters for enhanced performance.
Q: Are there any stability concerns with this ingredient?
A: While it demonstrates good inherent stability, it's recommended to use appropriate antioxidant systems in formulations. When combined with UVA filters like Avobenzone, stabilizers may be necessary.
Contact Us: Formulate Next-Generation Sun Protection
Trust the proven performance of Ethylhexyl Methoxycinnamate Liquid for your sun care formulations. Our high-quality ingredient ensures reliable UVB protection and excellent formulation characteristics.
Contact us today for technical data, formulation guidance, and competitive pricing! E-mail: ella.zhang@huilinbio-tech.com.
References
[1] BASF SE. (2020). Uvinul MC 80 Technical Information Sheet. Ludwigshafen, Germany.
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