Spontaneity for physicochemical properties testing
Spontaneity for Physicochemical Properties Testing determines how rapidly the test substance is dispersed when diluted with water. As per the CIPAC MT 160 test method: the mean measured minimum active spontaneity of dispersion or dispersibility should be 60%-105%. If a substance is outside these limits, there should be evidence that the substance is homogeneous on application through appropriate application equipment with no blockages.