https://www.avient.com/sites/default/files/2021-06/plastisol-storage-handling-technical-bulletin.pdf
The rate of increase is dependent upon a number of factors, including the plastisol formula, age and storage conditions.
As a result of these plastisol aging characteristics and the potential differences in testing methodology, it is strongly recommended that incoming quality control (QC) specifications not be established based on plastisol Technical Data Sheets (TDS), or Certificates of Analysis (COA).