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: Тинувин 326 (БАСФ), Chisorb 326

How It Works

УФ-поглотитель 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: Автомобильная промышленность, agricultural film, packaging with UV exposure
• ABS/HIPS: Корпуса для электроники, 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.

Связаться с СУНХЕМ

Request UV Absorber 326 samples with full COA, паспорт безопасности, and regulatory compliance documentation. Связаться с СУНХЕМ.