2,2-Dimethoxy-2-phenylacetophenone, CAS No. 24650-42-8

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24650-42-8

Catalog No. EBD23012

CAS 24650-42-8

Name 2,2-Dimethoxy-2-phenylacetophenone

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Basic Information

Synonyms: Benzildimethylketal BenzilDimethylKetone UV-651 Photoinitiator-651 3-hydroxy-2-(hydroxymethyl)-2-methylpropanoicacid 2,2-dimethoxy-1,2-diphenylethanone 2,2-dimethoxy-1,2-diphenyl-ethanone Photoinitiator651 BDK 2,2-diethoxy-2-phenylacetophenone Benzilalpha,alpha-dimethylacetal 2,2-Dimethoxy-2-phenylacetophenone

Molecular Formula: C16H16O3

Molecular Weight: 256.3

MDL Number: MFCD00008475

Categories: Materials Chemistry > Optoelectronic and Organic Semiconductor Materials > OLED and Organic Optoelectronic Precursors Materials Chemistry > Polymers and Macromolecular Materials > Polymer Additives

Product Description:

Benzoin dimethyl ether (BDME), also known as 2,2-dimethoxy-2-phenylacetophenone, is a solid organic compound with the molecular formula C16H16O3. It is a derivative of benzoin and belongs to the class of aromatic ketones. It is a white to pale yellow crystalline powder. Its primary and most significant application is as a highly efficient photoinitiator in ultraviolet (UV) curing systems. Upon exposure to UV light, it undergoes cleavage (Norrish Type I reaction) to generate free radicals, which initiate the polymerization of monomers and oligomers, such as acrylates and methacrylates. This property makes it crucial for coatings, inks, adhesives, and photoresists. It is also used in the synthesis of certain organic materials. BDME is known for its high photosensitivity and good solubility in common organic solvents. As a photoinitiator, it is particularly valued in applications requiring surface curing. It is important to handle it with care, avoiding prolonged light exposure and skin contact.

Physical Properties

Melting Point: 67-70 °C(lit.)

Boiling Point: 169°C 7mm

Flash Point: >190 °C

Density: 1.122 g/cm3

Solubility: 20 mg/mL in Methylene chloride

Safety Information

Packing Level: III

Hazard Category: 9

Transport Codes: 3077

Analytical Data

Appearance: white crystal