UV ABSORBER UV P CAS NO.2440-22-4
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China [CN] Chemical name: 2-(2'-Hydroxy-5'-methylphenyl)benzotriazole
CAS No.：2440-22-4
Molecular formula:C13H11N3O
Molecular weight: 225.3
Molecular structure
Specification
Appearance: White to yellowish crystal powder
Melting point，℃:128-132
Assay (HPLC), %: ≥99
Ash, %: ≤0.1
Volatility, %: ≤0.5
Light transmittance, %: 440nm≥94%
500nm≥97%
Solubility (20℃, g/100ml solvent)
Acetone:3 Benzene:7 Butyl Acetate:3 Carbitol:2 Chloroform:13
Ethanol:0.2 Ethyl Acetate:3.5 n-Hexane:0.8 Cyclohexane:1 Methanol:0.2
Methylene Chloride:16 MEK:4 Styrene:7 Toluene:6 Water ＜0.01
Application
UV ABSORBER HOSORB-UVP is a benzotriazole type ultraviolet light absorber (UVA). The max absorbing wavelength range is 270-380nm. It is widely used in a variety of polymers including polypropylene polycarbonate, polyethylene, polyurethane, unsaturated resin, ABS resin, epoxy resin, PMMA, PVC, elastomer, adhesive etc. It almost does not absorb visible light, especially for colorless and transparent products.
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