Photoinitiator TPO/(2,4,6-trimethylbenzoyl)diphenylphosphine oxide CAS No.:75980-60-8

​Photoinitiator TPO (2,4,6-Trimethylbenzoyl)diphenylphosphine Oxide

CAS No.: 75980-60-8
Appearance: Yellow powder.

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​Specifications

​Purity: ≥99.0% (Tested: 99.62%)​Moisture: 0.14%​Loss on Drying: 0.35%​Density: 1.12 g/mL at 25 °C​UV Absorbance (260 nm): 0.03

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​Applications

​UV-Curable Inks & Coatings:​Screen printing inks, ​lithographic/flexographic inks, ​wood coatings.Effective curing on ​white or high-titanium dioxide pigmented surfaces.​Industrial Use:Widely applied in coatings due to ​excellent UV absorption and curing efficiency.

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​Packaging & Transportation

​Standard Packaging: 1 kg/bag; 25 kg/cardboard drum.​Custom Packaging: Available per buyer’s request.

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​Storage

Store in a ​dry, ventilated warehouse.Protect from ​sunlight, ​moisture, and ​open flames.

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Summary:
Photoinitiator TPO’s ​high reactivity and ​broad compatibility make it ideal for UV-curable inks and coatings, especially in pigmented systems. Its ​low moisture and ​thermal stability ensure reliable performance, while strict ​storage protocols mitigate degradation risks.

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