紫外線吸収剤 326: アプリケーション, 仕様とサプライヤーガイド

化学的性質

• CAS: 3896-11-5 | MW: 323.4 グラム/モル | MP: 137–141°C
• UV absorption maximum: ~340 nm
• 外観: Light yellow to yellow powder or granules
• Commercial equivalents: ティヌビン 326 (BASF), Chisorb 326

How It Works

紫外線吸収剤 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.

アプリケーション

• PP/PE: Automotive, agricultural film, packaging with UV exposure
• ABS/HIPS: Electronics housings, outdoor furniture, garden products
• Rigid PVC: Window profiles, pipe fittings, cladding
• コーティング: Solvent-borne and water-borne industrial topcoats, 印刷インク
• ゴム: EPDM, SBR, natural rubber outdoor applications

紫外線 326 vs UV 327 vs UV 328

• 紫外線 326 (MW 323): Cost-effective, broad polymer compatibility
• 紫外線 327 (MW 358): Higher MW, 低ボラティリティ, similar applications
• 紫外線 328 (MW 351): Different substitution, favoured in coatings and engineering polymers

Typical Usage Levels

• ポリオレフィン: 0.1–0.5% | ABS/PVC: 0.2–0.5% | コーティング: 0.5–2.0%
• Combine with HALS at 1:1 に 1:2 ratio for outdoor applications

Key Sourcing Specifications

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

よくある質問

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.