Quick Product Information

Product NameSUNSORB®328
CAS Number25973-55-1
Chemical FormulaC22H29N3O
Supply OriginChina
DocumentsCOA / SDS / TDS / Specification available upon request
InquiryRequest Quotation →

Product Overview

SUNSORB® 328 is a benzotriazole UV absorber (equivalent to Tinuvin® 328) providing excellent light stabilization for polyolefins, polyurethanes, and coating applications. Its medium molecular weight and good compatibility offer reliable UV protection and color stability in a range of polymer and coating systems. SUNCHEM supports international buyers with SUNSORB® 328 sourcing from qualified Chinese producers, with quality documentation, export coordination, and logistics support.

Applications & Uses

  • UV absorber for polyolefins and polyurethanes
  • Light stabilizer in coatings and adhesives
  • Color and gloss retention in outdoor applications
  • UV protection in packaging films and sheets
  • Compatible absorber for a wide polymer range
  • Cosmetic sunscreen active ingredient
  • Synergistic stabilizer with HALS additives

Why Source SUNSORB®328 Through SUNCHEM?

SUNSORB®328 sourcing requires careful verification of manufacturers, compliance with export documentation, and proper logistics management. SUNCHEM supports global customers by connecting them with qualified Chinese producers and managing the key steps from sourcing to shipment.

Qualified Producer Selection

We help customers identify suitable Chinese manufacturers based on product specifications, production scale, quality records, and export capability.

Quality & Document Support

We coordinate documents including COA, MSDS, TDS, product specifications, and other export-related documents required for international trade.

Export & Logistics Coordination

SUNCHEM works with experienced logistics partners to ensure safe and compliant shipment arrangements, including proper handling for regulated materials.

Flexible Sourcing Solutions

Whether you require regular commercial supply, trial orders, or long-term procurement support, we match suitable supply sources to your requirements.

Long-Term Supply Management

We help manage supplier communication, quality follow-up, shipment schedules, and supply chain stability.

Ready to Source SUNSORB®328 from China?

Send us your required purity, quantity, destination port, and documentation needs. Our team will respond with quotation details and available product documents.

Basic Info

Chemical Synonym(s)2-(3,5-Di-tert-amyl-2-hydroxyphenyl)benzotriazole;HRsorb-328;2-(3',5'-di-t-aMyl-2'-hydroxyphenyl)benzotriazole;2-(2H-benzotriazol-2-yl)-4,Chemicalbook6-bis(1,1-dimethylpropyl)-Phenol;2-(2H-Benzotriazol-2-yl)-4,6-di-t;UV-328;2-(2H-Benzotriazol-2-yl)-4,6-di-tert-amylphenol;UVABSORBERUV-328
CAS Number25973-55-1
Chemical Formula

C22H29N3O

Frequently Asked Questions

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