UV Absorber UV-328 CAS NO.: 25973-55-1
| Chemical name | 2-(2′-Hydroxy-3′,5′-dipentylphenyl)benzotriazole |
| Molecular formula | C22H29N3O |
| Molecular weight | 351.5 |
| CAS NO. | 25973-55-1 |
Chemical structural formula
Specification
| Appearance | White to light yellow powder |
| Content | ≥ 99% |
| Melting Point | 80-83°C |
| Loss on drying | ≤ 0.5% |
| Ash | ≤ 0.1% |
Light transmittance
| Wave length nm | Light transmittance % |
| 440 | ≥ 96 |
| 500 | ≥ 97 |
Toxicity: low toxicity and used in food packing materials.
Use: This product is mainly used in polyvinyl chloride, polyurethane, polyester resin and others. Max absorption wave length range is 345nm.
Water solubility: Soluble in benzene, toluene, Styrene, Cyclohexane and other organic solvents.
Packing and Storage
Package: 25KG/CARTON
Storage: Stable in property, keep ventilation and away from water and high temperature.
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