Description

3,3''-Methylenebis(2-Hydroxy-4-Methoxybenzophenone) is a specialized organic compound belonging to the benzophenone class, functioning as a highly effective ultraviolet (UV) light absorber and stabilizer. Its core value lies in its ability to protect sensitive materials from photodegradation, thereby extending product lifespan and maintaining performance integrity under UV exposure. This chemical is essential for manufacturers in the polymer, coating, and specialty chemical industries who require advanced light stabilization for their formulations.

Application

• Polymer Stabilizer: A primary UV absorber in plastics and polymers such as polyolefins, PVC, and polyurethanes to prevent yellowing, embrittlement, and loss of mechanical properties.
• Coating & Paint Additive: Incorporated into industrial and automotive coatings, lacquers, and varnishes to protect against color fading and surface degradation caused by sunlight.
• Adhesive & Sealant Formulations: Used to enhance the weatherability and long-term stability of adhesives and sealants exposed to outdoor conditions.
• Specialty Chemical Intermediate: Serves as a key building block or additive in the synthesis of other advanced light-stabilizing agents and functional materials.
• Packaging Materials: Applied in films and sheets to protect packaged goods, particularly food and pharmaceuticals, from harmful UV radiation.

Basic Information

Product Name	3,3''-Methylenebis(2-Hydroxy-4-Methoxybenzophenone)
CAS No.	69119-80-8
Molecular Formula	C29H24O8
Molecular Weight	500.50 g/mol
Synonyms	UV-360; Bis(2-hydroxy-4-methoxyphenyl)(3H)methanone, 3,3'-methylenebis-; 2,2'-Methylenebis[6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol] (related stabilizer class); Light Stabilizer 360; 3,3'-Methylenebis(2-hydroxy-4-methoxybenzophenone); Benzophenone UV absorber derivative; Bis-methoxybenzophenone stabilizer; 2-Hydroxy-4-methoxybenzophenone methylene dimer
EINECS	Contact for details

Quality Control

Our production of 3,3''-Methylenebis(2-Hydroxy-4-Methoxybenzophenone) adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with industry specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory 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 incompatible materials and sources of heat or ignition. Due to its light-sensitive nature, containers should be kept in the original packaging or opaque containers until use.

Specification

Item	Specification
Appearance	Off-white to pale yellow powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	140 - 150 °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.