PROBLEM TO BE SOLVED: To provide a composition containing a phosphoric acid compound less in content of (meth)acrylic acid dieter, and capable of reducing adverse effects due to the (meth)acrylic acid dieter, and a manufacturing method therefor.SOLUTION: There is provided a composition containing a compound represented by the following general formula (1), in which a peak area by HPLC analysis of the compound represented by the following general formula (1) is 90.0% or more based on the total peak area, and a peak area by the HPLC analysis of a compound represented by the following general formula (2) is 5.0% or less based on the total peak area. In the formula (1) and the formula (2), R represents a methyl group or a hydrogen atom, and A represents an alkylene group having 6 to 20 carbon atoms.SELECTED DRAWING: NoneCOPYRIGHT: (C)2020,JPO&INPIT【課題】（メタ）アクリル酸ジエステルの含有量が少なく、（メタ）アクリル酸ジエステルに起因する悪影響を低下可能なリン酸化合物を含有する組成物、及びその製法を提供する。【解決手段】下記一般式（１）で表される化合物を含有する組成物であって、前記一般式（１）で表される化合物のＨＰＬＣ分析によるピーク面積が総ピーク面積に対して９０．０％以上であり、かつ、下記一般式（２）で表される化合物のＨＰＬＣ分析によるピーク面積が総ピーク面積に対して５．０％以下である、組成物。（式（１）及び式（２）中、Ｒは、メチル基又は水素原子を示し、Ａは、炭素数６から２０のアルキレン基を示す。）【選択図】なし
