Description

Uv Absorber 400 CAS NO 153519-44-9 is a high-performance, light-stabilizing additive designed to protect polymers and coatings from ultraviolet (UV) radiation degradation. Its primary value lies in extending the service life and maintaining the aesthetic and mechanical properties of materials exposed to sunlight and artificial UV sources. This product is essential for manufacturers in the plastics, coatings, adhesives, and specialty chemical industries seeking to enhance the durability of their formulations.

Application

• Stabilizer for engineering plastics (e.g., polycarbonate, polyamide, PET) to prevent yellowing and embrittlement.
• UV protection additive for automotive coatings, industrial paints, and wood finishes to maintain gloss and color.
• Light stabilizer in packaging films and agricultural films to improve weatherability.
• Additive for adhesives and sealants to prevent loss of elasticity and adhesion under UV exposure.
• Protective component in cosmetic and personal care formulations (e.g., sunscreens, hair care) where approved.
• Stabilizing agent for synthetic fibers and textiles to prevent photodegradation.

Basic Information

Product Name	Uv Absorber 400
CAS No.	153519-44-9
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	UV Absorber 400; Light Stabilizer 400; Benzotriazole UV Absorber; 2-(2H-Benzotriazol-2-yl)-4,6-di-tert-pentylphenol (related class); BZT derivative; Phenolic benzotriazole; Polymer light stabilizer; UV-400 (common industry designation)
EINECS	Contact for details

Quality Control

Our Uv Absorber 400 is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity, performance, and compliance with relevant industry specifications. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with every shipment to guarantee traceability and quality assurance for our global B2B clients.

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. Due to its light-sensitive nature, containers should be kept sealed when not in use to maintain product efficacy.

Specification

Item	Specification
Appearance	Off-white to light yellow powder or crystalline solid
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Ash Content	≤ 0.1%
UV Absorption	Conforms to typical profile

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