ammonium chloride, sal ammoniac(noun)
a white salt used in dry cells
a rare mineral composed of ammonium chloride found around volcanic fumaroles and guano deposits.
Sal ammoniac is a rare mineral composed of ammonium chloride, NH4Cl. It forms colorless to white to yellow-brown crystals in the isometric-hexoctahedral class. It has very poor cleavage and a brittle to conchoidal fracture. It is quite soft, with a Mohs hardness of 1.5 to 2, and has a low specific gravity of 1.5. It is water-soluble. Sal ammoniac is also the archaic name for the chemical compound ammonium chloride. The Romans called the ammonium chloride deposits they collected from near the Temple of Jupiter Amun in ancient Libya 'sal ammoniacus' because of proximity to the nearby temple. Salts of ammonia have been known from very early times; thus the term Hammoniacus sal appears in the writings of Pliny, although it is not known whether the term is identical with the more modern sal-ammoniac. In any case, this salt ultimately gave ammonia and ammonium compounds their name. It typically forms as encrustations formed by sublimation around volcanic vents. It is found around volcanic fumaroles, guano deposits and burning coal seams. Associated minerals include sodium alum, native sulfur and other fumarole minerals. Notable occurrences include Tajikistan; Mt. Vesuvius, Italy; and Parícutin, Michoacan, Mexico.
The numerical value of sal ammoniac in Chaldean Numerology is: 6
The numerical value of sal ammoniac in Pythagorean Numerology is: 2
Images & Illustrations of sal ammoniac
Translations for sal ammoniac
From our Multilingual Translation Dictionary
Get even more translations for sal ammoniac »
Find a translation for the sal ammoniac definition in other languages:
Select another language:
Discuss these sal ammoniac definitions with the community:
Word of the Day
Would you like us to send you a FREE new word definition delivered to your inbox daily?
Use the citation below to add this definition to your bibliography:
"sal ammoniac." Definitions.net. STANDS4 LLC, 2017. Web. 16 Aug. 2017. <http://www.definitions.net/definition/sal ammoniac>.