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Photoinitiator 819

Product Introduction

Chemical Name:	Bis(2,4,6-trimethylbenzoyl)-phenylphosphineoxide
CAS：	162881-26-7
Molecular Weight:	418.4645
Molecular Formula:	C₂₆H₂₇O₃P
Description:	Photoinitiator 819 is a versatile photoinitiator for radical polymerization of unsaturated resins upon UV and near visible light exposure. With the below three advantages,photoinitiator 819 has successfully solved the problems that often frustrate formulators: I.Good performance of curing pigmented formulations and in outdoor applications, it can be formulated with UV absorbers to gain good weather stability, while without harming the cure speed. II.Good through-curing of thick coating film. III.To give a clean white appearance in contrast to the off-white color associated withother long wavelength absorption photoinitiators.
Physical Properties:	Items	Standard
	Appearance	Pale yellow powder
	Assay	≥98.5%
	Melting point	127.0~135.0℃
	Loss on drying	≤0.2%

Chemical Name:	Bis(2,4,6-trimethylbenzoyl)-phenylphosphineoxide
CAS：	162881-26-7
Molecular Weight:	418.4645
Molecular Formula:	C₂₆H₂₇O₃P
Description:	Photoinitiator 819 is a versatile photoinitiator for radical polymerization of unsaturated resins upon UV and near visible light exposure. With the below three advantages,photoinitiator 819 has successfully solved the problems that often frustrate formulators: I.Good performance of curing pigmented formulations and in outdoor applications, it can be formulated with UV absorbers to gain good weather stability, while without harming the cure speed. II.Good through-curing of thick coating film. III.To give a clean white appearance in contrast to the off-white color associated withother long wavelength absorption photoinitiators.
Physical Properties:	Items	Standard
	Appearance	Pale yellow powder
	Assay	≥98.5%
	Melting point	127.0~135.0℃
	Loss on drying	≤0.2%

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