Time salts Sodium chloride Potassium chloride Calcium chloride 0.1N 0.5N 1N 2N 0.1N 0.5N 1N 2N 0.1N 0.5N 1N 2N 2 days 48 48 48 48 48 48 48 48 48 48 48 48 7 days 51 52 52 53 51 51 51 52 51 51 52 53 15 days 54 54 54 55 53 54 54 54 54 55 55 55 30 days 59 59 59 58 58 58 59 59 59 58 58 59 45 days 60 60 59 60 58 59 59 59 59 59 59 59 60 days 60 60 60 60 59 59 59 60 59 59 60 60

Table 3: Hardness (Shore-D) testing of polyvinyl acetate-Epoxy blend foam after soaking of different salts at different times.