Chemical Name: 2-(2'-Hydroxy-5'-methylphenyl)-benzotriazole

CAS No. : 2440-22-4

Molecular Formula: C13H11N3O

Molecular Weight: 225.25

Structural Formula:

 

 

 

 

Solubility: UV-P is particularly effective in styrenic polymers, PVC, unsaturated polyesters, polyurethanes, acrylic polymers and polycarbonates.

 

Attribute: white to yellowish crystal powder

 

Property Specification

Appearance white to yellowish crystal powder

Melting Point 129 -132 Deg. C

Assay 99% min (HPLC)

Transmittance(440nm) 97% min

(500nm) 98% min

Ash content 0.3% max

 

Applications:

UV-P is a benzotriazole type UV absorber. Characterized by its strong, broad range UV absorption property, UV-P brings an excellent photostability to polymers against UV light exposure in many ways i.e. retarding color yellowing , preventing embrittlement, maintaining of mechanical properties etc.

* Styrenic polymers: 0.2-0.5wt% for PS based on polymer wt.

0.3-0.5wt% for ABS based on polymer wt.

0.5-2.0wt% for HIPS based on polymer wt.

* Polyvinyl chloride: 0.2-0.5wt% for PVC based on polymer wt.

* Polyurethane: 0.3-1.0wt% for PS based on polymer wt.

* Polyacrylate: 0.15-0.3wt% for PS based on polymer wt.

* Polycarbonate: 0.15-0.3wt% for PS based on polymer wt.

* Unsturated Polyester: 0.2-0.4wt% for PS based on polymer wt.

 

ADVANTAGE

* Very high photostability for its strong ability to absorb light especially in UV region(270-340nm)

* Odorless, does not bring smells to the polymers.

* Very stable to heat, and can be used in plastics which require high processing temperature.

* Low vapor pressure, very little or no loss during processing.

 

TOXICITY & SAFETY

UV-P can be safely handled without irritation caused to the skin.

 

Stability and Storage:

In a closed system and dry, dark place without any light exposure.

 

Package: In 25 kg carton drum with inner plastic bag

 

Shelf life: 24 months