here to download a detailed manual on aqua
Aqua ammonia, also called ammoniacal liquor, ammonia
liquor or ammonia water is produced by dissolving
ammonia gas in water. Its proper chemical name is
The grades, or strength
of Ammonium Hydroxide usually available commercially
are 26° and 21° Baumé. However, Tanner
Industries, Inc. can produce any strength
to meet our customers requirements. The Baumé
reading refers to a specific gravity scale. A 26°
Baumé solution is equivalent to 29.4% and 21°
Baumé solution is equivalent to 19.68%, both
by weight of ammonia dissolved in water. Since the
Baumé reading varies with temperature, the
reading is standardized at 60°F. The density of
the material compared to water is 0.8974 (to see a
table with more data download our aqua ammonia manual
Aqua ammonia is corrosive
to copper, copper alloys, aluminum alloys and galvanized
surfaces. Aqua ammonia is an excellent acid neutralizer.
Its pH varies with concentration. Typical values are
11.7 at 1%, 12.2 at 5%, 12.4 at 10% and 13.5 at 30%.
The freezing point of
a 26° Baumé solution is about -110°F.
See the freezing point of other concentrations by
downloading our aqua
ammonia manual (pdf).
An aqua ammonia solution
has a vapor pressure which varies with temperatures.
At ambient temperatures, the vapor pressure of 26°
Baumé material just about equals atmospheric
pressure. Aqua ammonia should be stored in a closed
container and kept cool, otherwise, the ammonia gas
will come out of solution and the material strength
will be reduced.