Hydrofluoric Acid

HF

IUPAC: Hydrogen fluoride

CAS: 7664-39-3

概述

Hydrofluoric acid is unique among hydrohalic acids — it is weak but extremely dangerous. It can dissolve glass and penetrate skin to attack bone calcium.

组成

元素 符号 原子 原子质量
Hydrogen H 1 1.0080
Fluorine F 1 18.9980

元素组成

H
Hydrogen ×1
5.0%
F
Fluorine ×1
94.9%

用途

  • • Glass etching
  • • Semiconductor cleaning
  • • Fluorocarbon production

趣味知识

  • ✦ HF is a weak acid (pKa 3.17) despite fluorine being the most electronegative element — due to the extremely strong H-F bond

安全性

  • ⚠ Extremely toxic
  • ⚠ Penetrates skin
  • ⚠ Causes calcium depletion in bones
  • ⚠ Contact can be fatal

Structure

SMILES

F

属性

类型
acid
状态
gas
摩尔质量
20.01 g/mol
密度
0.0012 g/cm³
熔点
-83.6 °C
沸点
19.5 °C
溶解度
Miscible

Molecular Descriptors

Exact Mass
20.0062
XLogP
0.6
TPSA
0.0 Ų
H-Bond Donors
1
H-Bond Acceptors
1
Rotatable Bonds
0
Heavy Atoms
1
Complexity
0.0

相关化合物

Acetic Acid

CH₃COOH

Hypochlorous Acid

HClO

Boric Acid

H₃BO₃

Chloric Acid

HClO₃

Chlorosulfonic Acid

ClSO₃H

Chlorous Acid

HClO₂

Carbonic Acid

H₂CO₃

Hydrogen Sulfide

H₂S

Hydrochloric Acid

HCl

Hydrogen Cyanide

HCN

Frequently Asked Questions

What is Hydrofluoric Acid?
Hydrofluoric Acid (HF) is a acid compound with the IUPAC name Hydrogen fluoride.
What is the molecular weight of Hydrofluoric Acid?
Hydrofluoric Acid has a molar mass of 20.01 g/mol.
What state is Hydrofluoric Acid at room temperature?
Hydrofluoric Acid is a gas at room temperature.
Is Hydrofluoric Acid organic or inorganic?
Hydrofluoric Acid is classified as an inorganic compound.
What elements make up Hydrofluoric Acid?
Hydrofluoric Acid (HF) is composed of Hydrogen (H), Fluorine (F).