Hydrofluoric Acid

Synonym(s)

: hydrogen fluoride, fluorine hydrofluoride

Mol. Formula

: FH

EC / List no.

: 231-634-8

CAS no.

: 7664-39-3

Molecular weight

: 20,0064

Hydrofluoric acid is a solution of hydrogen fluoride in water. It is a colorless smoky liquid that can cause painful burns. Hydrogen fluoride (Hydrofluoric acid) is a weak acid that is the precursor to nearly all fluorine compounds, including pharmaceuticals such as Prozac. It is used as a chemical reagent in various industrial processes such as oil refining. It is also used as abrasive, cleaning agent, a reagent to dissolve oxides and silicates.

Application

»   This substance is used in the following products: laboratory chemicals, metal surface treatment products, non-metal surface treatment products, semiconductors, washing and cleaning products.
»   This substance is used in the following areas: formulation of mixtures and/or repackaging.
»   Used in machine wash liquids/detergents, automotive care products, paints, coatings or adhesives, fragrances and air fresheners.

Product Specifications

Physical and Chemical Properties
» Hydrogen fluoride appears as an anhydrous, colorless smoky liquid.
» It has a strong, offensive odor.

Properties

Characteristics	Unit	Value	Condition
Boiling point	°C	19.35
Melting point	°C	-84.01
Solubility			Miscible in water
Density	g/cm3	0.97	20 °C
Vapor pressure	kPa	122	25 °C
Surface tension	mN/ m	8.6	20 °C
pKa		3.19	20 °C
Viscosity	mPa.s	0.256	20 °C
Autoignition temperature		Non flammable