June 30, 2026

UV Absorber 326: Приложения, Specifications and Supplier Guide

Дом | Темы | 

Химические свойства

  • КАС: 3896-11-5 | МВт: 323.4 г/моль | член парламента: 137–141°C
  • UV absorption maximum: ~340 nm
  • вид: Light yellow to yellow powder or granules
  • Commercial equivalents: Tinuvin 326 (БАСФ), Chisorb 326

How It Works

UV Absorber 326 absorbs UV radiation (280–380 nm) and converts it to harmless heat via intramolecular proton transfer. The compound then returns to its ground state ready to absorb again — effectively a catalytic UV filter.

Приложения

  • ПП/ПЭ: Automotive, agricultural film, packaging with UV exposure
  • ABS/HIPS: Electronics housings, outdoor furniture, garden products
  • Rigid PVC: Window profiles, pipe fittings, cladding
  • Покрытия: Solvent-borne and water-borne industrial topcoats, типографские краски
  • Резина: EPDM, СБР, natural rubber outdoor applications

УФ 326 vs UV 327 vs UV 328

  • УФ 326 (МВт 323): Cost-effective, broad polymer compatibility
  • УФ 327 (МВт 358): Higher MW, более низкая волатильность, similar applications
  • УФ 328 (МВт 351): Different substitution, favoured in coatings and engineering polymers

Typical Usage Levels

  • Polyolefins: 0.1–0.5% | ABS/PVC: 0.2–0.5% | Покрытия: 0.5–2.0%
  • Combine with HALS at 1:1 к 1:2 ratio for outdoor applications

Key Sourcing Specifications

  • Чистота: ≥99.0% | член парламента: 137–141°C | Transmittance (1% acetone/500 nm): ≥97%
  • Ash: ≤0.1% | Loss on drying: ≤0.5%
  • Упаковка: 25 kg fiber drum with poly lining

Часто задаваемые вопросы

Is UV 326 food-contact compliant?
Listed in EU Plastics Regulation 10/2011 with SML 1.5 mg/kg. Verify FDA status per specific application. Request regulatory documentation from supplier.

Contact SUNCHEM

Request UV Absorber 326 samples with full COA, паспорт безопасности, and regulatory compliance documentation. Contact SUNCHEM.

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