Physical properties of sodium silicate-based substances make them very attractive for commercial/industrial use. Liquids and solids based on sodium silicate and produced by PQ Corporation have a density from 1.6g/cubic cm. to about 1.4 g/cubic cm.
A very big difference between acrylic and oil paint is the drying time. Acrylics dry in a matter of minutes to hours and oils dry in a matter of hours to weeks! This is a huge factor when choosing whether or not to choose oils versus acrylics.
Both impasto and glazing can be achieved in considerably less time than oils. On a scale of 1 to 10 â where 1 is pure plastic and 10 is oil â I would say that acrylics are about a 3 and alkyds are an 8. Some painters describe some of the alkyd colors as sticky. Fully compatible with oils.