1. Basic information
1. Chemical name: UV absorber UV-531
2. Chinese aliases: UV-531; BP-12; UV-81; 2-Hydroxy-4-n-octyloxybenzophenone
3. English name: Octabenzone
4. Molecular formula: C21H26O3
5. Molecular weight: 326.43
6. CAS number: 1843-05-6
7. EINECS number: 217-421-2
8. Appearance: Light yellow crystalline powder or flaky
II. Technical Parameters
project
indicator
Appearance
Light yellow crystalline powder or flaky solid
Purity (HPLC) /% ≥
ninety-nine
Melting point range / ℃
47.0~50.0
Loss on heating (105℃±2℃) /% ≤
zero point two zero
Ash content (650℃±25℃) /% ≤
zero point one zero
Solution clarity (toluene solvent)
clarify
Light transmittance/% ≥
440 nm
eighty-four
460 nm
ninety-six
500 nm
ninety-seven
(The above parameters are reference values, and the specific details shall be subject to the factory inspection sheet.)
III. Packaging Specifications
20kg/carton, 25kg/fiber drum