Solubility test
The solubility test was determined according to the Eastman and Moore method (1984) with some modifications.
The purpose of this test is to study the performance of a certain amount of powder which can dissolve in water. A
50 mL of distilled water was transferred into a beaker and 1g of the powder sample was carefully added. The
mixture was left to operate at high velocity for 5 minutes. An aliquot of supernatant was then transferred and
placed to a pre-weight petri dish and dried immediately in an oven at (T=105 ºC for 2 h) .The solubility
percentage was calculated by the weight difference