Manufacture supply Oxybenzone Cas 131-57-7 with high quality

Details:

UV Absorber UV-9: Overview

1. Chemical Identity

• Chemical Name: 2-Hydroxy-4-methoxybenzophenone

• Synonyms: Benzophenone-3, Oxybenzone (common in sunscreens)

• CAS Number: 131-57-7

• Molecular Formula: C??H??O?

2. Mechanism of Action
UV-9 operates by absorbing ultraviolet (UV) radiation (primarily UV-A and UV-B, 280–350 nm) and converting it into harmless heat through intramolecular proton transfer. This prevents UV-induced degradation in materials like polymers or skin in sunscreens.

3. Key Applications

• Plastics & Polymers: Protects PVC, polyethylene, and coatings from yellowing and brittleness caused by UV exposure.

• Coatings & Adhesives: Enhances durability of automotive paints, wood varnishes, and industrial adhesives.

• Personal Care: Used in sunscreens (as Oxybenzone) to shield skin from UV rays.

• Packaging: Extends lifespan of UV-sensitive products (e.g., food packaging).

4. Performance Characteristics

• High Compatibility: Blends well with most polymers and organic matrices.

• Low Volatility: Stable under processing temperatures (up to ~200°C).

• Broad UV Absorption: Effective across critical UV wavelengths.

5. Safety & Regulatory Considerations

• Health Concerns:

  • In sunscreens, linked to potential hormone disruption and coral reef damage, leading to bans in regions like Hawaii and Palau.

  • Industrial use generally deemed safe with proper handling.

• Regulatory Status:

  • Restricted under EU REACH for certain consumer products.

  • FDA-approved for sunscreen use (up to 6% concentration in the U.S.).

6. Industrial vs. Cosmetic Use

• Industrial: Prioritizes material protection; minimal human exposure.

• Cosmetic: Faces scrutiny due to direct skin contact and environmental impact.

7. Alternatives

• Benzotriazoles (e.g., UV-326, UV-327): For high-temperature applications.

• Triazines: Enhanced UV stability in extreme conditions.

• Mineral UV Filters (e.g., Zinc Oxide): Safer for eco-sensitive applications.

8. Key Suppliers

• BASF, Songwon, Mayzo, and other specialty chemical manufacturers.

Summary
UV-9 (2-Hydroxy-4-methoxybenzophenone) is a versatile UV absorber critical for protecting materials and skin from UV damage. While effective in industrial applications like plastics and coatings, its use in cosmetics requires careful consideration of health and environmental regulations. Always verify compliance with local guidelines for your specific application.