Ammonium Bifluoride (NH4HF2)

White orthorhombic crystal with specific gravity of 1.52.

Specifications of Ammonium Bifluoride are as following:

Molecular Formula

NH4HF2

Molecular Weight

57.04

Properties

It is a white orthorhombic crystal with specific gravity of 1.52. Melting Point 124.6 and boiling point 239.5. It is easily deliquescent and agglomerative in the air. It is soluble in water and the solution is acidic. The solubility in water is 63 g/100ml (20). It etches glass. It is slightly soluble in alcohol, can be decomposed in hot water and the solution appears to be strong acidic. It can sublimate in high temperature. It will corrupt skin and it is toxic when you touch it!

Usages

It is used as glass etchant, antiseptic, disinfector, analytical reagent, the solvent in beryllia producing beryllium metal and the treatment of the surface of silicon steel plate. It is also used as the oxidant in producing pottery and aluminum magnesium alloy, the cleaning agent of boiler water-supply system and evaporator system, the acidification treatment of sand in oil field, the fluorination reagent in organic synthesis and the extraction of rare element.

Execute Standard

HG/T3586-1999

Specification Parameter

High class Grade Grade

Ammonium Bifluoride (NH4HF2)

≥

97.0

95.0

Dry Loss ≤ 3.0 5.0

Residue on Ignition ≤ 0.2 0.2

Sulphate (SO4) ≤ 0.1 0.1

Ammonium Fluosilicate (NH42SiF6)

≤

2.0

4.0

Packing

In 25kg plastic woven bag lined with high pressure polyethylene plastic bag.