有类似乙酸气味。易吸湿,易聚合。见光色变深。除质纯而避光密封保存外,在贮存过程中易产生聚合、分解现象。能与水、醇、醚混溶。有腐蚀性。;Pyruvic acid was used to study the cultivation of previously undescribed soil bacteria as micro colonies using soil substrate membrane system. Pyruvic acid was used to develop a new method for simultaneous determination of organic acids in red wine and must using liquid chromatography.