Description

5,5'-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 materials from photodegradation, thereby extending their service life and maintaining their physical properties under prolonged UV exposure. This product is essential for manufacturers in the polymer, coating, and specialty chemical industries seeking to enhance the weatherability and durability of their formulations. It is also utilized in applications requiring precise light stabilization for sensitive organic materials.

Application

• Primary use as a UV absorber and light stabilizer in plastics and polymers, including polyolefins, PVC, and engineering resins.
• Protective additive in coatings, paints, and varnishes to prevent yellowing, cracking, and gloss loss.
• Stabilizing agent in adhesives and sealants to ensure performance integrity under outdoor conditions.
• Component in specialty chemical formulations for photographic materials and optical films.
• Used in the stabilization of synthetic fibers and textiles against UV-induced degradation.
• Potential applications in cosmetic and personal care products requiring specific UV-filtering properties.
• Additive for rubber and elastomer products to improve resistance to weathering.
• Research and development applications in advanced material science and photochemistry.

Basic Information

Product Name	5,5'-Methylenebis(2-Hydroxy-4-Methoxybenzophenone)
CAS No.	68716-15-4
Molecular Formula	C29H24O8
Molecular Weight	500.50 g/mol
Synonyms	Methylenebis(2-hydroxy-4-methoxybenzophenone); Bis(2-hydroxy-4-methoxybenzophenone)methane; UV Absorber 68716-15-4; 2,2'-Methylenebis(6-methoxy-4-benzofuranone) (related structure); Light Stabilizer 68716-15-4; Benzophenone UV-14 (industry alias); 5,5'-Methylenebis(2-hydroxy-4-methoxybenzophenone); 4,4'-Methylenebis(2-hydroxy-4-methoxybenzophenone)
EINECS	Contact for details

Quality Control

Our production of 5,5'-Methylenebis(2-Hydroxy-4-Methoxybenzophenone) adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes rigorous analytical testing, including HPLC for assay and impurity profiling, to meet precise customer specifications. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and physical parameters is provided with every shipment. Our quality system is designed to support applications requiring reliable material performance and traceability.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Contact for details
UV Absorption	Conforms to typical profile

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