Silicon dioxide - Wikipedia, the free encyclopedia
Silicon dioxide, also known as silica (from the Latin silex), is a chemical compound that is an oxide of silicon with the chemical formula Si O 2. It has been known ...
Compound of the two most abundant elements in the Earth's crust, silicon and oxygen, SiO 2. The mass of the Earth's crust is 59 percent silica, the main ...
S. S wave (min), onda S, onda transversal, véase P wave. sabotage, sabotaje. sack of cement (const), saco de cemento, bolso de cemento, [Es] bolsa de cemento, [Mx ...
SILICA DUST, CRYSTALLINE, IN THE FORM OF QUARTZ OR...
SILICA DUST, CRYSTALLINE, IN THE FORM OF QUARTZ OR CRISTOBALITE Silica was considered by previous IARC Working Groups in 1986, 1987, and 1996 ( IARC, 1987a,
History . Silica gel was in existence as early as the 1640s as a scientific curiosity. It was used in World War I for the adsorption of vapors and gases in gas mask ...