UV Absorber BP-1 CAS 131-56-6

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CAS:131-56-6

Molecular Formula:C13H10O3

Molecular Weight:214.22

EINECS:205-029-4

2,4-Dihydroxybenzophenone (UV absorber BP-1)has a colorless or yellowish crystal appearance. It can dissolve in gasoline, benzene, acetone and other organic solvents. 2,4-Dihydroxybenzophenone has very little solubility in water and is not decomposed by concentrated alkali and concentrated acid. 2,4-Dihydroxybenzophenone can be ionized with heavy metals to form salts. Can absorb 270 ~ 280nm wavelength of ultraviolet light. Melting point 130 ~ 131℃.

Item	Specification
Melting point	144.5-147 °C(lit.)
Boiling point	194 °C (1 mmHg)
Density	1,32 g/cm3
Vapor pressure	0Pa at 25℃
Refractive index	1.5090 (estimate)
Flash point	125 °C
LogP	2.964 at 25℃
Acidity coefficient (pKa)	7.72±0.35(Predicted)