2,4-Dihydroxybenzophenone丨CAS 131-56-6

2,4-Dihydroxybenzophenone丨131-56-6, commonly referred to as benzophenone-1, is a type of organic UV absorber and stabilizer. It is part of the benzophenone family, known for their ability to absorb UV radiation, thereby protecting materials and formulations from photodegradation.

1. UV Stabilizer in Polymers and Plastics
● Widely used in the plastics and polymer industry to protect materials from UV-induced degradation.
● Helps prevent discoloration, brittleness, and mechanical property loss in products such as:
oPolyvinyl chloride (PVC)
oPolystyrene
oAcrylic resins
oPolyesters
2. Sunscreen and Personal Care Products
● Cosmetic UV filter: Formerly used in sunscreens, lotions, and hair care products as a UVB absorber, protecting skin and hair from sun damage.
● Though less common today in consumer-facing sunscreens due to regulatory shifts and preference for newer ingredients, it may still appear in non-EU/US markets or in low-concentration cosmetic formulations.
3. Coatings and Paints
● Added to paints, varnishes, and coatings to increase UV resistance and extend the lifespan of surfaces exposed to sunlight.
● Helps preserve color vibrancy and surface integrity, especially in automotive, marine, and architectural applications.
4. Optical Applications
● Used in optical materials and coatings to enhance UV resistance in lenses, light filters, and display panels.
● Helps maintain transparency and performance over time under UV exposure.
5. Adhesives and Sealants
● Enhances UV resistance of industrial adhesives and sealants, especially those exposed to outdoor conditions, such as in construction and aerospace applications.

1. Effective UV Absorption
● 2,4-Dihydroxybenzophenone丨131-56-6 provides strong absorption in the UVB region (280–320 nm), protecting both living tissues and synthetic materials from harmful solar radiation.
● Acts as a light stabilizer, extending product life by reducing UV-induced damage.
2. Thermal Stability
● Thermally stable and retains its UV protective properties even under high processing temperatures, making it suitable for extrusion and molding processes.
3. Broad Compatibility
● Compatible with a wide range of polymers, resins, and cosmetic ingredients, allowing easy incorporation into various product formulations.
● Can be used in combination with other UV stabilizers or antioxidants for synergistic effects.
4. Cost-Effective Protection
● Offers an economical solution for improving the durability and longevity of products exposed to sunlight.
● Reduces maintenance costs and extends replacement intervals for treated materials.

Conclusion
2,4-Dihydroxybenzophenone丨131-56-6 or benzophenone-1, is a versatile UV absorber with wide-ranging applications in plastics, coatings, personal care products, and optical materials. Its ability to absorb UV radiation and enhance product durability makes it valuable across many industries. While regulatory and environmental factors are influencing its use in cosmetics, it continues to be a reliable and cost-effective solution for UV protection in industrial and commercial applications. Proper handling and environmental management ensure its benefits are maximized while minimizing potential risks.