Chemical name: 2-Hydroxy-2-methylpropiophenone CAS No.:7473-98-5                              Molecular formula:C10H12O2 Molecular weight:164.2                                                                                Appearance: Transparent yellow liquid Purity, %: ≥98.5 Transmittance, %: 425nm ≥ 98.0                  500nm ≥ 99.0 Color:  ≤100Hazen Volatility, %: ≤ 0.1 Ash, %: ≤ 0.1                                                                      Photoinitiator 1173 is a high efficiency UV photoinitiator and has the characteristics of low odor, non yellowing and good color stability. It can be conveniently combined with other photoinitiators.It is used in UV curing coatings and inks, clear coatings for wood, plastics and metal, overprint varnish. It is especially recommended for UV-curable coatings that require long-term exposure to sunlight and yellowing resistance. It is Highly efficient photoinitiator for UV curing system.  info at hhochem. com