Arsine


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arsine

[är′sēn]
(inorganic chemistry)
H3 As A colorless, highly poisonous gas with an unpleasant odor.

Arsine

 

AsH3, a colorless, odorless gas (impurities usually produce an odor of garlic). Boiling point, —62.4°C; melting point, -113.5°C. Discovered in 1775 by K. W. Scheele. Pure arsine is produced by the action of water on sodium arsenide, Na3As. The reduction of acid-soluble arsenic compounds by hydrogen results in the formation of a mixture of arsine and hydrogen at the moment of liberation—for example:

As2O3 + 6Zn + 6H2SO4 = 2AsH3 + 6ZnSO4 + 3H2O

If the mixture is passed through a glass tube heated to 400°-500°C, the arsine will decompose into hydrogen and arsenic, which forms a black film with a vitreous luster along the cool sections of the tube. The test is used to determine the presence of arsenic in various substances; it was developed in 1836 by the English chemist J. Marsh (1794–1846).

Arsine is one of the most poisonous commercial toxins known. It generally induces acute poisoning. It has a primarily hemolytic effect. The latent period lasts two to eight hours, toward the end of which headache, dizziness, rigor, vomiting, and abdominal pain occur. The skin takes on a sunburned appearance, and body temperature initially rises to 38°-39°C. The patient may go into a coma after a certain period of time. Preventive measures against arsine poisoning include the use of arsenic-free metals and acids, the mechanization of production processes, the sealing of industrial equipment, and the creation of an effective ventilation system.

References in periodicals archive ?
Korpela, "Analysis of gaseous arsenic species and stability studies of arsine and trimethylarsine by gas chromatography-mass spectrometry," Analytica Chimica Acta, vol.
Pollution problems in the metallurgical industry Industry Problems Iron and steelmaking Gases in coke production, slags, blast furnace, cyanides, electric furnace dust, pickle solution Ferroalloys production Arsine and phosphine, silica dust Aluminum industry Mercury, red mud, fluorine compounds, toxic organic compounds, cyanides Sulfide ores: copper, S[O.sub.2], mercury, lead, zinc, and nickel selenium, arsenic Hydrometallurgical Arsine, phosphine, cyanides processes: gold, silver, copper, and zinc Radioactive ores: Radon gas (radioactive) uranium and thorium Industrial minerals: Sulfur, ash, trace metals, coal, phosphate rock, nitrogen oxides, ilmenite, asbestos phosphogypsum, waste acid, toxicity of fibres, tailings Electroplating industry Chromium, copper, nickel Table No.
"The high level of lead and arsine used as ingredients in the product, which cause damage to human organs, is the sole reason for the ban and for the withdrawal from the local market," he added.
There are three other sources in the mitochondria that have been proposed as sources of ROS generations, firstly, the intermediary arsine species that may be formed (83).
N'importe quel disque qui sort, il les achete (Arsine, 60 ans, Montreal, novembre 2003).
Egoyan's wife and regular star Arsine Khanjian plays the art historian enlisted to advise on the portrayal of an artist whose mother's death in the holocaust when he was a young boy inspired his greatest work, and whose son by her first husband --executed as a terrorist - is having an affair with her stepdaughter who believes she killed her father.
First, the many cases of 'Gasio-gas' poisoning, in which arsenic trioxide in wallpaper glue was converted into volatile poisonous trimethyl arsine or 'Gasio-gas' [[(C[H.sub.3]).sub.3]As].
Some of the chemicals--including caustic hydrogen fluoride and deadly arsine gas--are toxic, and the fossil fuel consumed contributes to global warming, says Williams.
Since the explosion on Monday morning, gases including hydrogen, phosphine and arsine, a derivative of arsenic, have started venting from the cargo hold.
Ap Sam and David Buckram mumble about life at Manchester United under manager Sir Alex Freemason, while dirty Diego Meridian reveals why he turned down Arsine Wiener and even considered Brighton and Hove Albino.
A risk-free electrowinning process has been developed in Chile which avoids arsine generation and which claims optimum yield of both copper and arsenic(51).
Now all five ion implantation gases including Arsine, Phosphine, Boron Trifluoride and Silicon Tetrafluoride are available as Safe Delivery Source products from Matheson EPG.