Chemical name: 1-Hydroxycyclohexyl Phenyl Ketone CAS No.:947-19-3 Molecular formula:C13H16O2 Molecular weight:204.26 Appearance: White crystalline powder Purity, %: ≥99 Melting point, ℃: 46 - 49 Volatility, %: ≤ 0.2 Light transmittance, %: 425nm ≥ 98 500nm ≥ 99 Photoinitiator 184 has a high light triggered activity, good thermal stability and does not produce the yellowing. It is the most commonly used photoinitiator maximum absorption wavelength of 333nm. It is used as an effective UV curing initiator and non - variable yellow photoinitiator. It is widely used in copying varnish, plastic coatings, wood paints, and so on. It is added with other photopinitiator.