UV-1164 CAS 2725-22-6

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CAS:2725-22-6

Molecular Formula:C33H39N3O2

Molecular Weight:509.68

EINECS:412-440-4

UV-1164, also known as cyasorb uv 1164, UV ABSORBER-1164, and Absorber UV-1164, is a highly efficient UV absorber belonging to the hydroxyphenylbenzotriazole class. It provides strong and long-lasting protection against harmful UV radiation in polymers, coatings, adhesives, and engineering plastics.

This UV absorber is widely used in high-performance and long-term outdoor applications due to its outstanding light stability, low volatility, and excellent thermal resistance. UV-1164 is particularly suitable for processing environments requiring high temperatures, such as extrusion, injection molding, and film production.

UV-1164 is a chemical with the formula C33H39N3O2 and a molecular weight of 509.68. UV absorber UV-1164 is a triazine UV absorber, light yellow powder at room temperature, with very low volatility and good compatibility with polymers and other additives.

Item	Specification
Melting point	88-91°C
Boiling point	695.2±65.0 °C
Density	1.088±0.06 g/cm3
LogP	7.792 at 25℃
Acidity coefficient (pKa)	8.45±0.40

UV-1164 absorbs UV radiation effectively over a wide range, helping prevent polymer degradation such as discoloration, cracking, loss of gloss, and mechanical property decline. Its molecular design offers high permanence in the polymer matrix, ensuring long-term weatherability and durability.

25kg/drum or according to customer requirements.