PROBLEM TO BE SOLVED: To provide a dental composition which has excellent adhesiveness and an excellent storage stability.SOLUTION: The dental composition contains the organic phosphorus acid mixture which is a compound (A) and (B) represented by the following formula (where R represents an H or an alkyl group, and, x, y, and z represent integers of 5-20).COPYRIGHT: (C)2015,JPO&INPIT【課題】優れた接着性を有し、かつ保存安定性に優れる歯科用組成物の提供。【解決手段】下記式で表される化合物(A)および(B)である有機リン酸混合物を含有する歯科用組成物。(式中、RはHまたはアルキル基、x、y、zは5~20の整数を表す)。【選択図】なし