ammoniac


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ammoniac

or

gum ammoniac

(əmō`nēăk'), yellowish substance with a sickening, bitter taste, obtained from the milky exudate of the injured stem of a plant (Dorema ammoniacum) found in Iran, India, and S Siberia. It is a gum resin, soluble in alcohol and ether. It is used in industry in the manufacture of porcelain cements and in medicine as an expectorant. When gum ammoniac is distilled, it yields a liquid, oil of ammoniac.

ammoniac

[ə′mōn·ē‚ak]
(inorganic chemistry)
(materials)
A gum resin obtained from the stems of the ammoniac plant; used in medicine, perfume, plaster, concrete, and adhesive.
References in periodicals archive ?
The researcher and her team have proved that these and other compounds originate from the cyanide liberated by the salt Prussian blue when it is subjected for several days to conditions of pH12 and relatively high temperatures (70-150 degrees C) in a damp, oxygen-free ammoniac environment, similar to early conditions on Earth.
ii) Although the words were chosen because of their challenging morphology, algebre, ammoniac, vermicelles and alcoolemie are not uncommon, while most French adults will have heard of halogene, algorithme and alchimie.
I see where you're going, Ammoniac," said Alluriel.
This is accomplished by treating the hair with alkaline reducing agents such as ammonium thioglycolate in an ammoniac solution (pH of about 9.
Not far from the upper-class horsemen of the country estate, William works near the stables, enduring the "steaming scent of dung, the ammoniac whiff of horse-piss"(25); he is engaged in the tedious labour of sorting Harald's collections of specimens of frogs and beetles, which lie in a heap of negligence, reflecting the aging aristocrat's obvious decay.
Among them were mercury and sal ammoniac (ammonium chloride), the latter being a white or colorless crystalline salt found in volcanic regions.
5% solution called "AdBlue" in Europe is turned into ammoniac in the exhaust gas flow using hydrolysis.
From the start, every surface had to be meticulously clean and smooth before being immersed in a flux of sal ammoniac prior to a coat of molten tin.
In order to meet demand for the basic materials required by the ammoniac industry, KPI agreed in mid-July 1999 to buy 365 billion standard cubic feet of natural gas from Pertamina over a period of 20 years.
It will have a capacity of more than 3,300 tonnes of ammoniac products and other fertilisers per day.
Thus, in the case of oxygen, nitrogen, ammoniac, argon, and helium, a decreased contact angle on water, i.