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.
Acrylics dry in less than thirty minutes. In contrast, oil does not become dry to the touch for 48 hours. Acrylic paint dries differently from oil paint. Acrylic paint dries by evaporation of solvent of water. Oil paints dry by the interaction with oxygen from the air with their binder and evaporation of solvent. Acrylic films are not as hard as oil films. The surfaces of the soft acrylic films hold onto dust and dirt. The paint may even flow around the particles, over time, so that they are incorporated into the film. A variety of additives are added to the acrylic paint to achieve a desirable working.