UV Absorber 326: 애플리케이션, Specifications and Supplier Guide

Chemical Properties

• CAS: 3896-11-5 | MW: 323.4 g/mol | MP: 137–141°C
• UV absorption maximum: ~340 nm
• 모습: Light yellow to yellow powder or granules
• Commercial equivalents: Tinuvin 326 (바스프), 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.

애플리케이션

• PP/PE: Automotive, agricultural film, packaging with UV exposure
• ABS/HIPS: Electronics housings, outdoor furniture, garden products
• Rigid PVC: Window profiles, pipe fittings, cladding
• 코팅: Solvent-borne and water-borne industrial topcoats, 인쇄 잉크
• 고무: EPDM, SBR, natural rubber outdoor applications

UV 326 vs UV 327 vs UV 328

• UV 326 (MW 323): Cost-effective, broad polymer compatibility
• UV 327 (MW 358): Higher MW, 낮은 변동성, similar applications
• UV 328 (MW 351): Different substitution, favoured in coatings and engineering polymers

Typical Usage Levels

• 폴리올레핀: 0.1–0.5% | ABS/PVC: 0.2–0.5% | 코팅: 0.5–2.0%
• Combine with HALS at 1:1 에게 1:2 ratio for outdoor applications

Key Sourcing Specifications

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

자주하는 질문

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, SDS, and regulatory compliance documentation. Contact SUNCHEM.