69012-64-2
中文名稱
硅粉
英文名稱
Fumes, silica
CAS
69012-64-2
更新日期
2026/07/15 08:41:58
基本信息
中文別名
硅灰硅粉
微硅粉
英文別名
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
所屬類別
無(wú)機(jī)化工：非金屬礦物理化學(xué)性質(zhì)
密度0.45-0.67[at 20℃]
形態(tài)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化學(xué)物質(zhì)信息Fumes, silica (69012-64-2)
常見問(wèn)題列表
簡(jiǎn)介
微硅粉，又叫硅微粉，也叫硅灰、硅粉或二氧化硅超細(xì)粉。微硅粉是冶金電爐在2000℃以上高溫時(shí)產(chǎn)生的SiO2和Si氣體與空氣中的氧氣迅速氧化并冷凝而形成的一種超細(xì)硅質(zhì)粉體材料。
