Extremely fine amorphous silica particles dispersed in water. Colloids do not settle out of suspension over time. Colloidal silica is used commercially as binders and stiffeners and as polishing agents
US Department of Labor, Silica eTool - Glossary, Occupational Safety & Health Administration OSHA, Washington, D.C., USA 2010. https://www.osha.gov/dsg/etools/silica/glossary/gl ossary.html, (OSHA/ Silica - Amer) {625}