Description

Uvinul 4050 H CAS NO 124172-53-8 is a high-performance, broad-spectrum ultraviolet (UV) absorber belonging to the hydroxyphenyl triazine class of organic compounds. This advanced light stabilizer is engineered to provide exceptional protection against UV-A and UV-B radiation, preventing photodegradation and extending the service life of sensitive materials. It is an essential additive for formulators and manufacturers in the plastics, coatings, and personal care industries seeking to enhance the durability and performance of their products under demanding environmental conditions.

Application

• Plastics & Polymers: A key light stabilizer for polyolefins (PP, PE), PVC, polycarbonates, and engineering plastics to prevent yellowing, embrittlement, and loss of mechanical properties caused by UV exposure.
• Coatings & Paints: Used in automotive, industrial, and architectural coatings to maintain color integrity, gloss, and film integrity, protecting substrates from weathering and fading.
• Personal Care & Cosmetics: Incorporated into sunscreens and skincare formulations as a highly effective, photostable organic UV filter to protect skin from harmful ultraviolet rays.
• Adhesives & Sealants: Enhances the long-term performance and adhesion of UV-sensitive adhesive systems by mitigating the damaging effects of sunlight.
• Automotive Components: Protects interior and exterior plastic parts, such as dashboards, bumpers, and trim, from color change and material degradation.
• Packaging Materials: Stabilizes plastic films and containers against UV-induced degradation, ensuring product integrity and shelf life for light-sensitive contents.

Basic Information

Product Name	Uvinul 4050 H
CAS No.	124172-53-8
Molecular Formula	C42H57N3O5
Molecular Weight	683.93 g/mol
Synonyms	Bis(2,4-dihydroxyphenyl)methane[1,3,5]triazine; 2,2'-Methylenebis(6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol); Octrizole; UV-360; Bumetrizole; 2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol (related structure); Hydroxyphenyl benzotriazole UV absorber; Light stabilizer 360
EINECS	Contact for details

Quality Control

Our Uvinul 4050 H is produced under a strict quality management system to ensure batch-to-batch consistency and high purity. Quality control protocols include comprehensive analytical testing to confirm identity, potency, and the absence of critical impurities. While specific grades may vary, our production adheres to relevant industry guidelines for chemical additives. Certificates of Analysis (COA) detailing key specifications are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials. The product is light-sensitive and should be stored away from direct light exposure to maintain stability.

Specification

Item	Specification
Appearance	Off-white to light yellow powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Melting Point	180 - 190 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
UV Absorption	Conforms

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.