6월 30, 2026
자외선 흡수제 326: 애플리케이션, 사양 및 공급업체 가이드
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
- 상업적 등가물: 티누빈 326 (바스프), Chisorb 326
작동 방식
자외선 흡수제 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: 자동차, 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
자외선 326 vs UV 327 vs UV 328
- 자외선 326 (MW 323): Cost-effective, broad polymer compatibility
- 자외선 327 (MW 358): Higher MW, 낮은 변동성, similar applications
- 자외선 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.
썬켐에 문의하세요
Request UV Absorber 326 samples with full COA, SDS, and regulatory compliance documentation. 썬켐에 문의하세요.