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Chemical name

2-(2'-Hydroxy -3' ,5'-ditert-butylphenyl)-5-chloro benzotriazole

CAS NO.

3864-99-1

Introduction

UV-327 is a benzotriazole type UV absorber. It has a high and absorption in the wavelength of 300-400nm.

UV-327 is also effective in polyethylene, unsaturated polyester, polypropylene and polycarbonate.

 

Physical properties

Molecular Weight: 357.5

Appearance: slightly yellowish powder

Melting Point: 154 -157 ?

Transmittance: 460nm: 93% min

500nm: 96% min

Ash Content: 0.3% max

 Advantage

• Odorless, does not bring smells to the polymers.

• Excellent stability to heat.

• Low volatility during high processing temperature.

• Good extraction resistance.

 

Applications

• Polyethylene: 0.2-0.4wt% based on solids.

• Polypropylene: 0.3-0.5wt% for rigid PVC based on solids.

• Styrenic Polymers: 0.2-0.5wt% for PS based on solids.

0.5-2.0wt% for ABS based on solids.

• Unsturated Polyester: 0.2-0.4wt% for PS based on solids.

 

Toxicity & Safety

 

UV-327 can be safely handled without irritation caused to the skin.

 

Package

 

In 25 kg carton drum with inner plastic bag.

 

Storage

 

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

 

UV ABSORBER: UV-327

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