Photoinitiator 819 CAS:162881-26-7

​Photoinitiator 819 (Phenylbis(2,4,6-trimethylbenzoyl)phosphine Oxide)

CAS No.: 162881-26-7
Appearance: Yellow powder.

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​Specifications

​Purity: ≥99.0%​Molecular Formula: C₂₆H₂₇O₃P​Molecular Weight: 418.46 g/mol​EINECS No.: 423-340-5​Melting Point: 131–135 °C (lit.)​Boiling Point: 590.0 ± 60.0 °C​Density: 1.17 ± 0.1 g/cm³

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​Applications

​UV-Curable Systems:​UV varnishes, ​lacquers, and ​printing inks for substrates like ​wood, ​paper, ​metal, ​plastics, and ​fiber optics.Used in ​prepreg systems for composite materials.

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​Packaging & Transportation

​Standard Packaging: 25 kg/drum.​Custom Packaging: Available per buyer’s requirement.

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​Storage

Store in a ​cool, ventilated place.Protect from ​sunlight, ​heat, and ​moisture.

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Summary:
Photoinitiator 819 is a ​high-performance photoinitiator for UV-curable coatings and composites. Its ​broad reactivity and ​thermal stability enable efficient curing across diverse industrial applications, while strict ​storage protocols ensure long-term stability.

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