PROBLEM TO BE SOLVED: To provide a method for producing a liquid high purity organic silicon compound or its composition useful for production on a commercial scale.SOLUTION: Provided is a method for producing a liquid high purity organic silicon compound or its composition, including: a capture step where a liquid organic silicon compound and an impurity-containing composition containing organic impurities derived from the organic modification agent of the organic silicon compound are contacted with sold grains including one or more substances selected from cross-linking type polymer organic compounds capable of capturing the organic impurities, and the organic impurities are captured to the sold grains and a separation step where the organic silicon compound and the solid grains are separated.SELECTED DRAWING: NoneCOPYRIGHT: (C)2016,JPO&INPIT【課題】商業的規模での生産に有用な、液状の高純度な有機ケイ素化合物又はその組成物の製造方法を提供すること。【解決手段】液状の有機ケイ素化合物及び該有機ケイ素化合物の有機変性剤に由来する有機性不純物を含有する不純物含有組成物を、該有機性不純物を捕捉可能な架橋型高分子有機化合物から選ばれる1以上の物質を含む固体粒子と接触させて、該有機性不純物を該固体粒子に捕捉させる捕捉工程、及び、前記有機ケイ素化合物及び前記固体粒子を分離する分離工程を含む、液状の高純度有機ケイ素化合物又はその組成物の製造方法。【選択図】なし
