UV Absorber for PVC UV-531

China UV Absorber for PVC UV-531, Find details about China Chimassorb 81, Cyasorb UV-531 from UV Absorber for PVC UV-531

Model NO.
UV531
Origin
China
Model NO.
UV531
Origin
China
Ingredients: 2-hydroxy-4-(octyloxy)benzophenone
Molecular formula:C21H26O3
Molecular weight:326
CAS NO.: 1843-05-6
Technical index:
Appearance:light yellow crystal powder
Content: ≥ 99% 
Melting point: 47-49°C
Loss on drying: ≤ 0.5% 
Ash: ≤ 0.1%
Light transmittance: 
Wave length nm Light transmittance % 
450≥ 90
500≥ 95

Toxicity: almost non-toxic,rattus norvegicus oral LD 50 =12g/Kg weight. 
Use: This product is mainly used in polyolefine, polystyrene, polyester, polyamide glue and others. Man absorption wave length range is 300-375nm. 
General dosage 0.2-0.6% .
Solubility: 25°C unit:g/100mLsolvent 
solvent Acetone Benzene Methyl alcoholn-Heptane Alcohol (95%) Hexane Water
Solubility 74 72 40 2.6 40.1 <0.5