Isopropylphenyl phosphate CAS Number: 68937-41-7

Characteristics

Isopropylphenyl phosphate is low viscosity, low toxicity, odourless and non-polluting.

Uses

Isopropylphenyl phosphate, is a flame retardant.

Application

Isopropylphenyl phosphate is commonly used as a plasticising, lubricating, toughening and flame retardant additive in industrial applications.

Synthesis

Triisopropylphenol and POCl3 were synthesized to synthesize triisopropylphenyl phosphate with the reaction formula:

3C3H7C6H5OH+POCl3??(C3H7C6H5)3PO4+3HCl

(1) 230Kg of triisopropylphenol was loaded into the three-necked flask of 250mL with a stirrer, a thermometer, a reflux condenser tube, and a dispensing funnel. Begin to raise the temperature to 70-100 ??, add 550Kg POCl3, control the temperature 75 ?? ~ 130 ??, add calcium and magnesium catalyst 1.15kg, 30-720mmHg under vacuum conditions, the reaction temperature of 75-150 ??, the reaction at the same time the negative pressure discharge of acid, a total of 7-10 hours of reaction;

(2) for distillation under reduced pressure, the pressure of 0.09 -0.1Mpa, take 270-280 ?? fraction for the finished product, get 480g product, yield 87% (in trichlorophosphorus), colorless transparent liquid, that is, triisopropylphenyl phosphate.

Acid value 0.06mgKOH/g, heating reduction 0.05%, flash point 230 ?? (open cup), refractive index 1.554.