Ammonium Fluoride

Ammonium fluoride is the inorganic compound with the formula NH4F. It has a sharp saline taste, and is soluble in water. It is used for preserving wood, as a mothproofing agent, in printing and dying textiles, and as an antiseptic in breweries and glass industry.

Specifications of Commercial Pure Ammonium Fluoride:
Melting Point: 100C (decomposes)
Solubility in water: 45.3 g/100 ml (25C)
Solubility: slightly soluble in alcohol, insoluble in liquid ammonia
Assay: 98.0% minimum
Appearance: White crystalline solid hygroscopic
pH: 6.8 to 8.0
Cd: 0.0005% maximum
Cl: 0.0005% maximum
Cu: 0.0005% maximum
Fe: 0.0005% maximum
K: 0.002% maximum
Na: 0.002% maximum
Pb: 0.0005% maximum
SO4: 0.005% maximum
Zn: 0.0005% maximum.

Ammonium Fluoride Analytical Reagent Grade:
NH4F --- Formula Wt 37.04 --- CAS Number 12125-01-8

REQUIREMENTS
Assay: 98% NH4F minimum.

MAXIMUM ALLOWABLE
Insoluble matter: 0.005%
Residue after ignition: 0.01%
Chloride (Cl): 0.001%
Sulfate (SO4): 0.005%
Heavy metals (as Pb): 5 ppm
Iron (Fe): 5 ppm.

For Original Monographs of IP Indian Pharmacopoeia BP British Pharmacopoeia USP US Pharmacopoeia FCC Food Grade Reagent Grade product, please check with the respective web-pages or books.