Its English name is Phenylphosphonic acid

CAS number: 1571-33-1

Molecular formula: C6H7O3P

Molecular weight: 158.09

EINECS number: 216-388-1

MDL No. : MFCD00002136

Stats

Melting point 162-164 °C (lit.)

Boiling point 241-243 °C(lit.)

Density 1.412 g/mL at 25 °C(lit.)

Vapor pressure 0-0Pa at 20-25℃

Refractive index n20/D 1.523(lit.)

Flash point >230 °F

Storage conditions Sealed in dry,Room Temperature

Acidity coefficient (pKa)pK1:1.83; pK2:7.07 (25°C)

Morphology Crystalline Powder

Color White to off-white

Water solubility 40.4 g/100 mL (25 oC)

BRN2245168

LogP-3.3-0.086 at 20-25℃ and pH4-7

Surface tension 71.2mN/m at 1g/L and 20℃

Safety information

hazard symbol (GHS)GHS hazard pictogramsGHS hazard pictograms

GHS05,GHS07

Danger

Hazard Description H302-H314

Precautions P260-P270-P280-P301+P312-P303+P361+P353-P305+P351+P338

Dangerous Goods Mark C,Xn

Hazard category code 34-37-41-37/38-22-38

Safety Instructions 26-39-37/39-45-36/37/39

Dangerous Goods Transport No. UN 3265 8/PG 2

WGK Germany3

RTECS number TD4393000

F10

TSCAYes

Danger level 8

Packaging Category III

Customs Code 29319090

Toxic mouse, LD50, intraperitoneal, 110 mg/kg (110 mg/kg), "the Summary Tables of in Tests," National Research Council Chemical-Biological Coordination Center. Vol. 2, Pg. 55, 1950.