Description

2,2'-Methylenebis[4-tert-Butyl-6-(2H-Benzotriazol-2-Yl)Phenol] is a high-performance, sterically hindered phenolic antioxidant and ultraviolet light absorber. This compound is critical for protecting polymers and coatings from oxidative degradation and UV-induced yellowing, thereby extending product lifespan and maintaining aesthetic properties. It is essential for manufacturers in the plastics, synthetic fibers, and high-durability coatings industries who require long-term thermal and light stability for their formulations.

Application

• Primary UV stabilizer and antioxidant for polyolefins (PP, PE), polyurethanes, and engineering plastics.
• Enhances the light fastness and color retention of synthetic fibers, films, and automotive coatings.
• Protects adhesives and sealants from thermal-oxidative degradation during processing and service life.
• Used as a stabilizer in masterbatches and polymer concentrates for consistent additive dispersion.
• Additive for elastomers and rubber products to prevent cracking and loss of mechanical properties.
• Stabilizing component in lubricants and greases to inhibit oxidation under high-temperature conditions.

Basic Information

Product Name	2,2'-Methylenebis[4-tert-Butyl-6-(2H-Benzotriazol-2-Yl)Phenol]
CAS No.	30786-49-3
Molecular Formula	C₄₁H₅₀N₆O₂
Molecular Weight	658.88 g/mol
Synonyms	2,2'-Methylenebis(6-(2H-benzotriazol-2-yl)-4-tert-butylphenol); Lowilite 36; Tinuvin 360; Bumetrizole; 2,2'-Methylenebis[6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol] (related variant); UV-360; Phenol, 2,2'-methylenebis[6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)-]; Bis(2H-benzotriazol-2-yl)-4-tert-butyl-m-cresol methylene derivative
EINECS	250-321-2

Quality Control

Our production of 2,2'-Methylenebis[4-tert-Butyl-6-(2H-Benzotriazol-2-Yl)Phenol] adheres to a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for assay and purity, to ensure it meets high-purity specifications suitable for demanding polymer applications. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and physical properties is provided with each shipment to guarantee batch-to-batch consistency and traceability.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep away from heat sources and incompatible materials. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Light yellow to off-white powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.5%
Melting Point	195°C - 205°C
Loss on Drying	≤ 0.5%
Ash Content	≤ 0.1%
Transmittance (425nm)	≥ 95%
Transmittance (500nm)	≥ 97%

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