Plastic Raw Materials UV Absorber UV-531 for Plastics PVC PE PP PS PC PMMA

• Customization: Available
• CAS No.: ---
• Formula: C21h26o3
• Model NO.: UV Absorber
• EINECS: ---
• Appearance: Powder
• Usage: Rubber Auxiliary Agents, Plastic Auxiliary Agents
• Color: White
• Transport Package: 25kg/Drum
• Specification: purity: 99% minimum
• Trademark: UV Absorbers
• Origin: Shandong
• HS Code: 3812391000
• Production Capacity: 500000

Product Description

Product Description

Product Name: UV-Absorber
Chemical Name: 2-Hydroxy-4-Octyloxybenzophenone; Octabenzone
CAS No.: 1843-05-6
MF: C21H26O3
.Storage&Packing: Store in a sealed, dark can. Packed in 25kg fiber can, 20kg, 25kg carton.

UV-Absorber UV 531 (Benzophenone-3) is widely used in plastics and rubber to prevent UV-induced degradation. It effectively absorbs UV radiation (290-360 nm) and dissipates it as heat, protecting polymers from yellowing, embrittlement, and loss of mechanical properties. Commonly applied in polyolefins, PVC, coatings, and rubber products like automotive parts and outdoor materials, it enhances weatherability while maintaining material clarity.

Specification

Item	Index
Appearance	light yellow needle-like powder
Content	≥99%
Melting point	47-49ºC
Ash	<0.1%
Light transmittance	450nm>90%
	500nm>95%

Application

UV absorbers are widely used in plastics and rubber to enhance durability by preventing photodegradation caused by UV radiation. These additives absorb harmful UV rays and convert them into harmless heat, thereby reducing discoloration, brittleness, and mechanical property loss. Common types include benzophenones and benzotriazoles, which are effective in polyolefins, PVC, and coatings. In rubber applications, UV absorbers protect against cracking and surface degradation, extending the lifespan of products like tires, seals, and outdoor footwear. They are often combined with antioxidants for synergistic effects. Their versatility and efficiency make them essential in industries requiring long-term UV resistance, such as automotive, construction, and packaging.

Company Profile

Qingdao new sanda Industrial Co., Ltd. is a high-tech enterprise focused on chemical research and development and international trade, specializing in fundamental raw materials for industries such as coatings, rubber, plastics, water treatment, pigments, and construction chemicals. Our company boasts independent R&D and inspection centers, enabling us to track and control all product processes, from small-scale testing and pilot testing to industrial production. Furthermore, we have invested in leading-edge laboratories and testing facilities, and established a comprehensive testing and quality assurance system, laying a solid foundation for providing high-quality products to our customers.

Why Choose Us

Our advantages:

1. Lower price 
2. Stable supplier and consistent quality 
3. Faster delivery (stock in the warehouse closest to Qingdao Port, over 1,000 tons available) 
4. Over 20 years of UV absorbers trading experience .