2,2',4,4'-Tetrahydroxybenzophenone
2,2',4,4'-Tetrahydroxybenzophenone
Product Name: 2,2',4,4'-Tetrahydroxybenzophenone
CAS Number: 131-55-5
Specifications Model: 99.0%
Product Description: UV Absorber BP-2
Molecular Formula: C13H10O5
Molecular Weight: 246.22
Appearance: light yellow crystalline powder
Content: ≥ 99.0%
Loss on drying: ≤ 0.5%
Melting Point: ≥ 195.0 degree centigrade
Chroma: ≤ 3.0
Specific absorption : A1 / 1 (345nm): ≥ 580
Turbidity: 12NTU
Packing: 5kg bag
Storage: Sealed, dark
Performance and use: UV absorber, absorption wavelength range 320-400nm, there is symmetrical on both sides of the benzene ring and the hydroxyl, the thermal stability and photochemical properties, are superior to BP-1 (UV-O), now widely used in PET , paints and cosmetics among the last few years the application of the fabric by the textile industry, the importance attached to an increasingly wide range.
Duration: 2 years