The Birch method of making methamphetamine is dangerous because the alkali metal and liquid ammonia are both extremely reactive, and the temperature of liquid ammonia makes it susceptible to explosive boiling when reactants are added. Gaseous ammonia was first isolated by Joseph Black in 1756 by reacting sal ammoniac ( ammonium chloride) with calcined magnesia ( magnesium oxide). Excess ammonia may accumulate and cause alteration of metabolism or increases in the body pH of the exposed organism.

It was first used on an industrial scale in Germany during World War I, [63] following the allied blockade that cut off the supply of nitrates from Chile. Intense effort has been directed toward understanding the mechanism of biological nitrogen fixation. L), deep blue solutions are formed: these contain metal cations and solvated electrons, free electrons that are surrounded by a cage of ammonia molecules. Old soap and hard water stains can make your bathroom look dirty, but with the help of ammonia, you can have it looking brand new again!The gas is flammable ( autoignition temperature: 651°C) and can form explosive mixtures with air (16–25%). Anhydrous ammonia corrodes copper- and zinc-containing alloys, which makes brass fittings not appropriate for handling the gas. This key material is generated via the Ostwald process by oxidation of ammonia with air over a platinum catalyst at 700–850°C (1,292–1,562°F), ≈9atm. Ammonia is an irritant and irritation increases with concentration; the permissible exposure limit is 25 ppm, and lethal above 500ppm. If you have any tough stains, you can use a small amount of the solution and a scrub brush to gently scrub the stain.

Pentavalent ammonia is known as λ 5-amine, nitrogen pentahydride, or more commonly, ammonium hydride [NH 4] +H −. Ammonia was first detected in interstellar space in 1968, based on microwave emissions from the direction of the galactic core.Since products don't always list their ingredients, it's wise to avoid mixing ammonia with any other cleaning product besides soap.