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Ultraviolet absorbent UV-531

Chemical Name: 2-hydroxy-4-(octyloxy)benzophenone 
Molecular formula: C21H26O3
Molecular weight: 326
CAS NO.1843-05-6
Chemical Structural formula:

Sales code: PS-531
Appearance: light yellow crystalline powder 
Assay: ≥ 99% 
Melting point: 47-49℃
Loss on dry: ≤ 0.5% 
Ash: ≤ 0.1%

Light transmittance:

Wavelength nm

Light transmittance %

460

≥ 96

500

≥ 97