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.
Quick Answer. Acrylic paint is water-based, so it is not flammable. Oil-based formulas, on the other hand, such as polyurethane, alkyd and varnish, are flammable. Both water- and oil-based media, however, contain pigments that are hazardous when not properly disposed. Continue Reading.