title: [Preparation and quantitative analysis of methyl phenyl carbonate standard sample].
abstract: The preparation and quantitative analytical method for high-purity methyl phenyl carbonate (MPC) was developed. Dimethyl carbonate (DMC) and diphenyl carbonate (DPC) were firstly used as reactants to synthesize MPC catalyzed by TiO2/SiO2 because the disproportionation of MPC is reversible and the reverse reaction is thermodynamically favorable. The high-purity MPC standard sample was obtained by reduced pressure distillation and the removal of minor phenol with dilute sodium hydroxide solution. The qualitative analysis by gas chromatography-mass spectrometry (GC-MS) showed there were minor phenol and diphenyl carbonate in the MPC sample. The mass percent concentration of water in the MPC sample was 0.26%, which was determined by Karl Fischer titration. A gas chromatographic method with an OV-101 capillary column was established for quantifying the minor phenol and DPC in the MPC sample. The quantitative results showed the mass concentrations of phenol and DPC were 2.04% and 1.59%, respectively. The difficulty to analyze MPC, the intermediate product of the transesterification of DMC and phenol, was solved with the self-made MPC standard sample.
authors.affiliation: School of Chemical Engineering and Technology, Tianjin University, China. xingaihua@eyou.com
authors.forename: Aihu
authors.initials: A
authors.lastname: Xing
authors.forename: Minqing
authors.initials: M
authors.lastname: Zhang
authors.forename: Zhimin
authors.initials: Z
authors.lastname: He
authors.forename: Jianping
authors.initials: J
authors.lastname: Zhang