Hydrofluoric Acid

HF

IUPAC: Hydrogen fluoride

CAS: 7664-39-3

Aperçu

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

Composition

Élément Symbole Atomes Masse atomique
Hydrogen H 1 1,0080
Fluorine F 1 18,9980

Composition élémentaire

H
Hydrogen ×1
5,0%
F
Fluorine ×1
94,9%

Usages

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

Le saviez-vous

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

Sécurité

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

Structure

SMILES

F

Propriétés

Type
acid
État
gas
Masse molaire
20,01 g/mol
Densité
0,0012 g/cm³
Point de fusion
-83,6 °C
Point d'ébullition
19,5 °C
Solubilité
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

Composés associés

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).