UV absorber UV-531 (Domestic)
UV Absorber UV-531
Functional Additives| UV absorber
Basic Specifications
| Product Name | UV absorber UV-531 (Domestic) |
| English Name | UV Absorber UV-531 |
| CAS Registry Number | 1843-05-6 |
| Molecular formula | C21H26O3 |
| Molecular Weight | 326.4 |
| Product Categories | Functional Additives |
| Product Line | UV absorber |
| Appearance | Light yellow crystalline powder |
| Density | 1.16 g/cm³ |
Product Features
- Efficient UV Absorption — Strongly absorbs UV light in the 270–330 nm range
- Light color — Pale yellow powder, minimal impact on product appearance.
- Good compatibility — compatible with multiple resins, low volatility
- Low Migration — No Leaching with Long-Term Use
- Synergistic Effect – Enhanced Performance When Used with HALS
Application Areas
PolyolefinsPVCStyrene-basedEngineering PlasticsPaintPolyurethane / RubberPP Fiber / EVA
App Data
| Applicable Systems | Recommendation | Behavior Description |
|---|---|---|
| PE / PP | ✅ Recommended | Usage: 0.1–0.5% |
| PVC | ✅ Recommended | Usage: 0.1–0.5% |
| PS / ABS | ✅ Recommended | Suitable for light-colored items |
| PC | ✅ Recommended | Suitable for transparent products |
| Powder Coating | ✅ Recommended | Used in conjunction with HALS |
| polyurethane | ✅ Recommended | Usage: 0.1–0.5% |
| Rubber | ✅ Recommended | Noticeable anti-aging effect |
| PP Fiber / EVA | ✅ Recommended | Good compatibility |
| Usage Notes | ⚠️ Use with Caution | Works synergistically with HALS to significantly enhance weather resistance. |
Notes
- Please test with a sample first to confirm the optimal dosage and heat resistance conditions.
- The powder color chart may differ from the final product color. Please refer to the actual colored result.
- Evaluate weather resistance for long-term outdoor exposure.
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