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.
Acrylic vs. Enamel Craft Paint. Acrylic Paint. Acrylic paint is a pigment mixed with an acrylic polymer. You can paint with an acrylic paint directly out of the tube for an opaque effect, or you can dilute the paint by mixing it with water to create a lighter wash of color.