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UV-327(Benzotriazole UV Absorber )CAS: 3864-99-1

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Synonyms: 2,4-Di-tert-butyl-6-(5-chloro-2H-benzotriazol-2-yl)phenol; 2,4-di-tert-butyl-6-(5-chlorobenzotriazol-2-yl)phenol; Ultraviolet Absorbent UV-327; Dibutylhydroxyphenylchlorobenzotriazole; 2-(3,5-Di-tert-butyl-2-hydroxyphenyl)-5-chloro-2H-benzotriazole; UV-327; 2-(2'-Hydroxy-3',5'-di-tert-butylphenyl)-5-chlorobenzotriazole; 2-(2'-Hydroxy-3',5'-di-tert-Butyl Phenyl)-5-Chloro Benzotriazole; BHSORB-327; UV absorber-327 Classification: Other Chemicals
EINECS: 223-383-8 Molecular Formula: C20H24ClN3O
Melting Point: 150-158℃ Boiling Point: 469.2 oC at 760 mmHg
Stability: Water Solubility: Insoluble
Refractive index: 1.596 Flash Point: 237.6 oC
Purity: Appearance: Slightly yellowish powder
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 UV-327(Benzotriazole UV Absorber )

Chemical name : 2-(2'-Hydroxy-3',5'-di-tert-butylphenyl)-5-chlorobenzotriazole
Introduction: UV-327 is a benzotriazole type ultraviolet light absorber (UVA), imparting good light stability for plastics and other organic polymers. UV-327 is recommended in a variety of polymers and organic substrates, including acrylic polymers, polycarbonate, polyesters, styrene homo- and copolymers, unsaturated polyesters, polyvinyl chloride, polyolefins, polyvinyl butyral, elastomers, and adhesives.

Molecular formula: C17H18N3OCl
CAS NO : 3864-99-1
Structure :

Molecular Weight : 357.9  Appearance : slight yellow powder

Melting Range : 154-157 °C 

Transmittance (%) : 460nm≥95  500nm≥98


1. Unsaturated Polyester : 0.2-0.5wt% based on polymer weight

2.PVC: Rigid PVC : 0.2-0.5wt% based on polymer weight

Plasticized PVC : 0.1-0.3wt% based on polymer weight

3.Polyurethane : 0.2-1.0wt% based on polymer weight

4.Polyamide : 0.2-0.5wt% based on polymer weight

Packing:UV-327 is available in powder form in a 25 kg  fiber drum or 25kg carton with an inner PE liner.


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