69012-64-2
中文名称
硅粉
英文名称
Fumes, silica
CAS
69012-64-2
更新日期
2024/04/28 11:51:52
69012-64-2 结构式
基本信息
中文别名
硅灰硅粉
微硅粉
英文别名
SILICAFUMESFumes, 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
所属类别
无机化工:非金属矿物理化学性质
密度0.45-0.67[at 20℃]
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.
水溶解性135mg/L at 37℃
EPA化学物质信息Fumes, silica (69012-64-2)