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 paint consists of pigment that uses mineral spirits and acrylic resin for mixture and suspension. In contrast to oil paints, acrylic paints are extremely fast-drying and, in some cases, require only 60 seconds to provide a dry surface. Many acrylics are noted as drying down at a slightly darker color.