CAS号: 69012-64-2 英文名称: Fumes, silica 英文同义词: SILICAFUMES;Fumes, silica;Einecs 273-761-1;silica welding fumes;AMORPHOUS-FUMESILICA;AMORPHOUS SILICA FUME;Silica Fume (powder form);Silica, amorphous - Fume total dust;Silica, amorphous - Fume, respirable 中文名称: 硅粉 中文同义词: 硅灰;硅粉;微硅粉 分子式: 分子量: 0 Mol file 形态: Fine white powder with particle sizes generally below 1mm. This is not the same as the commercial products “fumes silica,” “silica gel,” “precipitated silica,” or “fused silica.” It is formed during the electric arc production of elemental silicon from quartz, which is reduced to silicon monoxide, escaping from the furnace and oxidized by air to silicon dioxide. This condenses to form spherical particles. For the production of ferrosilicon, iron metal is added to the charge; during charging there is also exposure to crystalline silica. EPA化学物质信息: Fumes, silica (69012-64-2)