UV Absorber BP2 CAS 131-55-5

CAS: 131-55-5

Molecular Formula: C13H10O5

Molecular Weight: 246.22

EINECS: 205-028-9

Synonyms: 2,2,4,4-Tetrahydroxybenzophenol; 2,2’,4,4’-tetrahydroxy-benzophenon; 2,2’,4,4’-tetrehydroxybenzophenone; 2,2,4,4TETRAHYDROXYBENZOPHENONE; 2,4Chemicalbook,2',4'-Tetrahydroxybenzophenone; 2,4,2’,4’-tetrahydroxybenzophenone; Benzophenone,2,2',4,4'-tetrahydroxy-

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What is UV Absorber BP2 CAS 131-55-5?

2, 2 ', 4, 4 '-tetrahydroxybenzophenone is a highly efficient water-soluble ultraviolet absorber, belonging to the benzophenone ultraviolet absorber series products. 2, 2 ', 4, 4 '-tetrahydroxybenzophenone is flammable, and combustion produces toxic nitrogen oxide fumes.

Specification

Item	Specification
Melting point	198-200 °C(lit.)
Boiling point	349.21°C (rough estimate)
Density	1.216
Acidity coefficient (pKa)	6.98±0.35(Predicted)
Refractive index	1.4825 (estimate)
LogP	3.091 (est)

Application

At present, 2, 2 ', 4, 4 '-tetrahydroxybenzophenone is widely used in plastics, resins, coatings, synthetic rubber and other fields, 2, 2', 4, 4 '-tetrahydroxybenzophenone is used as pharmaceutical intermediates, photosensitive materials, cosmetics anti-ultraviolet additives and so on. In recent years, the application of fabrics has been paid attention to by the textile industry, and the scope is more and more wide.