Specialty Additives Available — Bulk Only

4-Benzoylbiphenyl (PBZ)

PBZ
CAS 2128-93-0 · Formula C19H14O · MW 258.3 g/mol

Type II benzophenone-class photoinitiator with red-shifted absorption for high-throughput surface cure of UV coatings (Coatings & Construction) Used with amine synergists in UV/UV-LED inks (Industrial Manufacturing) Cures UV-curable plastics and adhesives (Plastics & Polymers)

Safety Data Sheet
CAS Number
2128-93-0
Formula
C19H14O
Molecular Weight
258.3 g/mol
Material Family
Specialty Additives
At a Glance
Material Family
Specialty Additives
Record Type
UVCB
Primary Role
Crosslinking / Curing
Functional Roles
Applications & Use Cases
  • Type II benzophenone-class photoinitiator with red-shifted absorption for high-throughput surface cure of UV coatings (Coatings & Construction)
  • Used with amine synergists in UV/UV-LED inks (Industrial Manufacturing)
  • Cures UV-curable plastics and adhesives (Plastics & Polymers)
Physical Properties
appearance
White to pale-yellow crystalline solid
molecular_weight
258.3 g/mol
melting_point
101-103 °C
log_p_xlogp
4.9
water_solubility
Practically insoluble in water
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

Chemical Identity
CAS Number
2128-93-0
Molecular Formula
C19H14O
Molecular Weight
258.3 g/mol
IUPAC Name
phenyl-(4-phenylphenyl)methanone
PubChem CID
InChI Key
LYXOWKPVTCPORE-UHFFFAOYSA-N
XLogP
4.9
Synonyms & Trade Names
4-Phenylbenzophenone p-Phenylbenzophenone 4-Benzoyldiphenyl p-Benzoylbiphenyl [1,1'-Biphenyl]-4-yl(phenyl)methanone Phenyl 4-biphenylyl ketone Trigonal 12
Full Description

Type II benzophenone-class photoinitiator with red-shifted absorption for high-throughput surface cure of UV coatings (Coatings & Construction) Used with amine synergists in UV/UV-LED inks (Industrial Manufacturing) Cures UV-curable plastics and adhesives (Plastics & Polymers)

Frequently Asked Questions

What is 4-Benzoylbiphenyl (PBZ) (CAS 2128-93-0)?

4-Benzoylbiphenyl (PBZ) (CAS 2128-93-0) is a crosslinking / curing agent supplied by RawSource in bulk. Type II benzophenone-class photoinitiator with red-shifted absorption for high-throughput surface cure of UV coatings (Coatings & Construction)

What is the molecular formula and weight of 4-Benzoylbiphenyl (PBZ)?

Molecular formula C19H14O, molecular weight 258.3 g/mol. IUPAC name: phenyl-(4-phenylphenyl)methanone

Is 4-Benzoylbiphenyl (PBZ) hazardous?

A full Safety Data Sheet (SDS) is available on request and supplied with every shipment; hazard classification is confirmed against the SDS for the grade you order

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.