Detailed Product Description:
A white crystalline powder. Soluble in cold water.
Commonly used for etching glass or in electropolishing.
This is Reagent Grade material with a minimum purity of 99%.
Ammonium fluoride can be derived by neutralizing ammonia with
hydrofluoric acid. It crystallizes as small prisms, having a sharp saline
taste, and is exceedingly soluble in water.
Ammonium fluoride decomposes silicates, and thus glass, on being
heated with them, a property shared among all soluble fluorides. For
this reason it cannot be handled in glass test tubes or apparatus during
laboratory work. It also sublimes when heated—a property common
among ammonium salts.
Ammonium fluoride adopts the wurtzite crystal structure, in which both
the ammonium cations and the fluoride anions are stacked in ABABAB
layers, each being tetrahedrally surrounded by four of the other. There are
NH...F hydrogen bonds between the anions and cations.
On passing hydrogen fluoride gas (in excess) through the salt, ammonium
fluoride absorbs the gas to form the addition compound ammonium hydrogen
fluoride (ammonium bifluoride).
This substance is commonly called "commercial ammonium fluoride". The
word "neutral" is sometimes added to "ammonium fluoride" to represent the
neutral salt. As the acid salt contains a higher percentage of fluoride by mass,
it is usually used in preference to the neutral salt in the etching of glass.
It is also used for preserving wood, as a mothproofing agent, in printing and
dying textiles, and as an antiseptic in breweries.
Toxic. May be fatal if ingested, or inhaled. Corrosive to tissue. May be
absorbed through skin. Download, read and understand the precautions
associated with this compound before use.
Click here to download copy of MSDS (Material Safety Data Sheet)
Contents of 200 grams comes packed in 250ml sized wide-mouth
HDPE Nalgene bottle.