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Ammonium bifluoride

[Name] Ammonium bifluoride [1341-49-7 ]
[Molecular formula] NH4HF2
[Molecular weight] 57.04
[UN] 1727
[IMDG Code]83019
[Product Specifications]

Item Index Name Item Index Name
Appearance White or colourless transparent crystal Sulphate(SO4) max0.1%
Purity min98% Ignition Residue max0.2%
Fluorosilicate[(NH4)2SiF6] max2.0% Loss on Drying max1.2%

[Character] It is a colorless rhombus or flake crystal with specific gravity of 1.52, mp 124.6°C. It is deliquescent and agglomerative easily. It is soluble in water. Its stable liquor is acidity in dry condition. It etches glass. It has toxic. 
[Uses]It is used as glass etchant, aseptic, disinfector and analytical reagent, in solution in the production of metal beryllium from beryllium oxide, in the treatment of the surface of silicon steel plate, for pottery and magnesium alloy, in chemical cleaning of boilers and evaporators, in acidify treatment of sand in oil field, as fluorination reagent in organic synthesis, in extraction of rare element. 
[Packing] Packing with plastic weaven bag lined with polythene plastic bag. 25kg per bag.