氢氟酸是什么?

2025-01-27 14:03:04
推荐回答(4个)
回答1:

氢氟酸是氟化氢气体的水溶液,清澈,无色、发烟的腐蚀性液体,有剧烈刺激性气味。熔点-83.3℃,沸点112.2℃,密度0.988g/cm³。易溶于水、乙醇,微溶于乙醚。因为氢原子和氟原子间结合的能力相对较强,使得氢氟酸在水中不能完全电离,所以理论上低浓度的氢氟酸是一种弱酸。具有极强的腐蚀性,能强烈地腐蚀金属、玻璃和含硅的物体。剧毒,如吸入蒸气或接触皮肤会造成难以治愈的灼伤。实验室一般用萤石(主要成分为氟化钙)和浓硫酸来制取,需要密封在塑料瓶中,并保存于阴凉处。
中文名
氢氟酸
英文名
Hydrofluoric acid
别 称
氟氢酸、氟化氢、氟化氢溶液
化学式
HF
CAS登录号
7664-39-3
沸 点
112.2℃
密 度
1.15 g/mL
外 观
无色溶液
安全性描述
S:1/2-7/9-26-36/37-45
危险性描述
R:26/27/28-35
IUPAC名
Hydrofluoric acid
RTECS
MW7875000
摩尔质量
20.01
MSDS
duPont MSDS
主要危害
剧毒、腐蚀性强

回答2:

回答3:

HF弱酸

回答4:

HF

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