Hazardous effects: Silicon will not be identified to generally be toxic, but when breathed in being a fine silica/silicate dust it could cause Long-term respiratory problems. Silicates such as asbestos are carcinogenic. Silicon is alloyed with aluminum for use in engines as the existence of silicon increases the metal’s castability. https://glasslinedpipe48147.birderswiki.com/1619460/carborundum_silicon_carbide_options