Omnistab UV 328 – CAS: 25973-55-1

About Omnistab UV 328 – CAS: 25973-55-1

Omnistab UV 328 (25973-55-1) is an UV absorber belonging to the hydroxyphenyl benzotriazole class, which imparts outstanding light stability to plastics and other organic substrates.

  • CAS number: 25973-55-1
  • Chemical name: 2-(2H-Benzotriazol-2-yl)-4,6 ditertpentylphenol
  • Moleculair formula: C22H29N3O
  • Molecular weight (g/mol): 351.49
  • Content (%): 99.00 min
  • Melting point/range (ºC): 79 - 87
  • Volatiles (%): 0.30 max
  • Ash (%): 0.10 max
  • Transmittance 460 nm (%): 96.00 min
  • Transmittance 500 nm (%): 97.00 min
  • Product form(s): Granular, Powder
  • Packaging option(s): Carton
Product Data Sheet
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Product Data Sheet

Omnistab UV 328 – CAS: 25973-55-1

Date: Tuesday, Jun 6, 2023

Product Composition

CAS number: 25973-55-1
Chemical name: 2-(2H-Benzotriazol-2-yl)-4,6 ditertpentylphenol
Moleculair formula: C22H29N3O
Molecular weight (g/mol): 351.49

Product Specification

Content (%) 99.00 min
Melting point/range (ºC) 79 - 87
Volatiles (%) 0.30 max
Ash (%) 0.10 max
Transmittance 460 nm (%) 96.00 min
Transmittance 500 nm (%) 97.00 min
Product form(s): Granular, Powder
Packaging option(s) Carton
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