Hydrofluoric Acid

IUPAC: Hydrogen fluoride

CAS: 7664-39-3

Übersicht

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

Zusammensetzung

Element	Symbol	Atome	Atommasse
Hydrogen	H	1	1,0080
Fluorine	F	1	18,9980

Elementare Zusammensetzung

Hydrogen ×1

5,0%

Fluorine ×1

94,9%

Verwendung

• Glass etching
• Semiconductor cleaning
• Fluorocarbon production

Wissenswertes

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

Sicherheit

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

Structure

SMILES

F

Eigenschaften

Typ: acid
Zustand: gas
Molmasse: 20,01 g/mol
Dichte: 0,0012 g/cm³
Schmelzpunkt: -83,6 °C
Siedepunkt: 19,5 °C
Löslichkeit: Miscible

Molecular Descriptors

Exact Mass: 20,0062
XLogP: 0,6
TPSA: 0,0 Å²
H-Bond Donors: 1
H-Bond Acceptors: 1
Rotatable Bonds: 0
Heavy Atoms: 1
Complexity: 0,0

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).