Syna PI 1173

Syna PI 1173

Chemical Name: 2-Hydroxy-2-methyl-1-phenyl-1-propanone
Molecular Formula: C10H12O2
Molecular Weight:  164.2 g/mol
CAS No: 7473-98-5
EC No: 231-272-0
Synonyms: Irgacure® 1173, Darocur® 1173

Molecular Structure


Syna-PI 1173 is a general-purpose radical photoinitiator that can be used alone or in combination with other photoinitiators. It is used in formulations containing unsaturated materials such as acrylates, methacrylates, vinyls and unsaturated polyesters. With exposure to UV light, Syna-PI 1173 undergoes a photochemical reaction that generates radicals. These radicals will initiate polymerization through the unsaturated groups present in the system.

            Product Specification:

Term Specification
Appearance Colorless to Light Yellow
Transparent Liquid Content
Purity >= 99.0%
Ash <= 0.1%
Boiling Point ºC 80 – 81
(10g 1173/100ml Toluene)
425nm:   99.0%
500nm:   99.0%
Volatiles <= 0.1 %
Absorption 244,278,322
Package 200kg Steel Drum
Shelf Life Two Years
Printable TDS Version SDS