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Photoinitiator PBZ CAS 2128-93-0

Photoinitiator PBZ CAS 2128-93-0

Chemical name: 4-Benzoylbiphenyl

Synonymous names:

p-Phenylbenzophenone

4-phenyl-(4-phenylphenyl)methanone

4-Phenybenzophenone

CAS No: 2128-93-0

EINECS : 218-345-2

Molecular formula: C19H14O

Content: ≥99%

Molecular weight: 258.31

Appearance: Light yellow to yellow powder

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Structural formula：

Product Description：

Item	Specifications
Appearance	Off white powder
Assay	99% min
Melting point (range)	99 -103°C
Ash	1% max
Flash Point	184℃
Melting point	99-102 °C(lit.)
Boiling point	419-420 °C(lit.)
Density	1.065 g/cm3

Properties and Usage:

Photoinitiator PBZ is mainly used for various inks and coatings. It is an initiator with a long-wave absorption molecular structure and is mainly used as a photocuring initiator in colored UV curing formulas. Also used as pharmaceutical intermediates.

The rapid charge transfer between PBP and TEA forms an exciplex, resulting in a photoreduction reaction. Exciplex intermediates are present. A BP series photoinitiator is used to initiate the photoinitiated polymerization of TMPTA. Among them, PBP-TEA are highly efficient and exhibit the same charge transfer induced free radical formation that initiates polymerization of acrylate type monomers.

Storage and transportation:

Store in a cool, ventilated warehouse. It should be stored separately from oxidants and edible chemicals, and should not be mixed. Keep the container sealed and away from fire and heat.

Packaging specifications:

Net weight 25KGS/ carton, can also be packaged according to customer requirements.