Phosphorous acid tris(m-methylphenyl) ester synthesis
- Product Name:Phosphorous acid tris(m-methylphenyl) ester
- CAS Number:620-38-2
- Molecular formula:C21H21O3P
- Molecular Weight:352.36
108-39-4
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Yield:620-38-2 95%
Reaction Conditions:
with phosphorus trichloride at 35 - 150; under 7.50075 Torr; for 10 h;Inert atmosphere;Flow reactor;Temperature;
Steps:
3
10 kg of m-cresol (reactant 1A) was added to the reactor (2). 3.84 kg of phosphorus trichloride (reactant 2B) was pumped to the mixer (5) by metering. The reactor (2) has a temperature of 150 ° C and a pressure of 1 kPag. Phosphorus trichloride (reactant 2B) feed capacity of 1l / h, circulating pump (4) of the circulation flow of 20l / h. The inert gas (C) was charged with a high purity nitrogen gas at a flow rate of 0.5 kg / h and passed through a distributor (3) in a reactor (2). The heat exchanger 2 (8) has a condensing temperature of 35 ° C and the condensate is returned to the top of the column (1). After 10 hours of reaction, the conversion was carried out by gas chromatography, and the conversion of phosphorus trichloride (reactant 2B) was 100% and the yield of tri-m-tolyl phosphite (E) was 95%.
References:
CN103724370,2016,B Location in patent:Paragraph 0049; 0050
