UV Absorber 328 | CAS 25973-55-1
- CAS No.: 25973-55-1
- EINECS No.: 247-384-8
- Molecular Formula: C22H29N3O
Product Information of UV Absorber 328 (CAS 25973-55-1)
UV-328 is a high efficient and an excellent UV absorber, which can effectively absorb 270-340 nm UV light. Solubility for polymer is good, volatility is little, and its durability to washing is very good. Mainly used for PE, PP, PS, PVC, poly ester and ABS resins, and so on.
- Product Name: UV Absorber UV-328
- Chemical Name: 2-(2′-Hydroxy-3′,5′-di-tert-pentylphenyl)-benzotriazole
- Molecular Weight: 351.5 g/mol
- Synonyms: UV-328; Ultraviolet absorbent UV-328
- Category: Benzotriazole UV Absorber
Specifications of UV Absorber 328 (CAS 25973-55-1)
| Appearance | Light yellow powder | ||||
| Assay | ≥99% | ||||
| Boiling Point | 469.1°C at 760mmHg | ||||
| Flash Point | 229°C | ||||
| Melting Point | 80-88°C | ||||
| Ash | ≤0.1% | ||||
| Loss on drying | ≤0.5% | ||||
| Volatile matter | ≤0.5% | ||||
| Transmittance | 460nm≥97%; 500nm≥98% | ||||
| Recommended dosage | PS | PE | Polyester | PVC | PC |
| 0.2-0.5% | 0.2-0.4% | 0.3-0.5% | 0.2-0.5% | 0.15-0.3% | |
| Packaging | 20kg or 25kgs/drum or carton | ||||
Properties of UV Absorber 328 (CAS 25973-55-1)
It is soluble in benzene, toluene, styrene, cyclohexane, methyl methacrylate, ethyl acetate, ketones and other organic solvents, insoluble in water.
Applications or uses of UV Absorber 328 (CAS 25973-55-1)
UV-328 is suitable for polyolefin (especially polyvinyl chloride, PE), polyester, styrene, polyamide, polycarbonate, PC, elastomers and other polymers.
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