Overview
Diphenyl Benzophenone, also known as Benzophenone, is an organic compound widely recognized for its role as a photoinitiator in UV-curable applications. It is a crystalline solid with a distinct ketone functional group, making it highly reactive under UV light. This compound is synthesized through the Friedel-Crafts acylation of benzene with benzoyl chloride. Its stability and efficiency in absorbing UV light have made it a staple in industries requiring rapid polymerization processes.
Physical and Chemical Properties
Diphenyl Benzophenone exhibits a melting point range of 47-51°C and a boiling point of 305°C. It is soluble in common organic solvents such as ethanol and acetone but remains insoluble in water, which limits its use in aqueous systems. The compound's density is 1.11 g/cm³, and it appears as a white to light yellow powder. Its key chemical property is its ability to absorb UV light and initiate polymerization reactions, making it invaluable in coatings and adhesives.
Main Applications
The primary use of Diphenyl Benzophenone is in UV curing systems, where it acts as a photoinitiator to harden inks, coatings, and adhesives upon exposure to ultraviolet light. It is also employed in the pharmaceutical industry as an intermediate in drug synthesis. Additionally, its UV-absorbing properties make it useful in sunscreens and plastic stabilizers to prevent degradation from sunlight. The compound's versatility ensures its demand across multiple high-tech and industrial sectors.
Safety and Storage
Diphenyl Benzophenone should be handled with care to avoid inhalation or skin contact, as it may cause irritation. Proper personal protective equipment (PPE), such as gloves and goggles, is recommended during handling. Storage conditions require a cool, dry environment away from direct light and moisture to maintain stability. Containers should be tightly sealed to prevent contamination and degradation over time.
B2B Procurement Guide
When procuring Diphenyl Benzophenone, buyers should verify the CAS number (119-61-9) and request certificates of analysis to confirm purity levels. Reputable suppliers often provide technical data sheets and material safety data sheets (MSDS). Price ranges typically fall between $20-$50 per kg, depending on quantity and purity. Bulk purchases may qualify for discounts, but buyers should assess supplier reliability and compliance with industry standards before finalizing orders.
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