Description

Bisoctrizole CAS NO 103597-45-1 is a high-performance, broad-spectrum ultraviolet (UV) light absorber belonging to the hydroxyphenyl benzotriazole class. This compound is critically important for providing exceptional photostability and long-term protection to materials susceptible to UV degradation. It is primarily needed by formulators and manufacturers in the personal care, coatings, plastics, and polymer industries seeking to enhance product durability and performance.

Application

• Sunscreen & Personal Care Products: A key organic UV filter (UV-A and UV-B absorber) in sunscreens, day creams, lip balms, and other cosmetic formulations to protect skin from harmful ultraviolet radiation.
• Plastics & Polymer Stabilization: Used as a light stabilizer in polyolefins (PP, PE), PVC, polycarbonates, and other polymers to prevent yellowing, embrittlement, and loss of mechanical properties caused by UV exposure.
• Coatings & Paints: Incorporated into automotive, industrial, and architectural coatings to protect the underlying substrate and maintain color, gloss, and film integrity.
• Adhesives & Sealants: Enhances the weatherability and service life of adhesive and sealant products used in outdoor applications.
• Packaging Materials: Protects sensitive contents (e.g., food, pharmaceuticals) by stabilizing plastic packaging against UV-induced degradation.
• Synthetic Fibers & Textiles: Applied to improve the UV resistance and colorfastness of fibers, fabrics, and technical textiles.

Basic Information

Product Name	Bisoctrizole
CAS No.	103597-45-1
Molecular Formula	C₄₁H₄₉N₃O₂
Molecular Weight	615.85 g/mol
Synonyms	Methylene Bis-Benzotriazolyl Tetramethylbutylphenol; Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine; Tinosorb® M; Bisoctrizole (INCI); 2,2'-Methylene-bis(6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol); UV Absorber Bisoctrizole; Eversorb 80
EINECS	Contact for details

Quality Control

Our Bisoctrizole is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for assay and purity, to ensure it meets stringent specifications for use in cosmetic and industrial applications. Certificates of Analysis (COA) are provided with each shipment to guarantee traceability, consistency, and compliance with relevant guidelines.

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 incompatible materials and sources of heat.

Specification

Item	Specification
Appearance	Off-white to pale yellow powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Melting Point	194 - 200 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Particle Size (D90)	Contact for details

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