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.
Classic vs. Modern. To many artists and art lovers, oil paintings are synonymous with a classic medium, while acrylic works are a modern art form. Think oil, and the first thing that comes to mind is a masterpiece. Think acrylic and see bold, contemporary colors. Painting with oil on canvas probably originated in the 13th century and continues to be a favorite option for many. The current medium dates to the 15th century and Belgian Jan van Eyck.