Tabun


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tabun

(tä`bən), liquid chemical compound used as a nerve gasnerve gas,
any of several poison gases intended for military use, e.g., tabun, sarin, soman, and VX. Nerve gases were first developed by Germany during World War II but were not used at that time.
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. It boils at 240°C; with some decomposition. The liquid is colorless to brownish; its vapors have a fruity odor similar to that of bitter almonds. The liquid is absorbed through the skin, but the vapor is not. Although tabun is destroyed by its reaction with bleaching powder, the poisonous gas cyanogen chloride is produced. Chemically, tabun is cyanodimethylaminoethoxyphosphine oxide.

Tabun

 

(Russian, of Turkic origin), a herd of horses or camels assembled by man. A tabun contains animals of the same sex and age, for example, 80–120 mares with colts born in the current year or 120–150 head of young stock, with mares and colts separated. It may be formed for year-round livestock maintenance (in regions where herd horse breeding is practiced) or only for the pasturing period.


Tabun

 

also ethyl phosphorodimethylamidocyanidate [(CH3)2N(C2H5O)P(O)CN]; a colorless liquid with a melting point of – 50°C, a boiling point of about 230°C (with decomposition), a volatility (at 20°C and with maximum concentration) of 0.6 milligram per liter (mg/l), and a density of 1.087 g/cm3 (20°C). Tabun dissolves in water to a concentration of approximately 12 percent; it is readily soluble in organic solvents.

The compound is slowly hydrolyzed by water; it reacts vigorously with aqueous solutions of alkalies, ammonia, and amines, a characteristic used in degassing. The products from the degassing of Tabun are toxic because they contain cyanides. Tabun is prepared through a sequence of reactions of phosphorous oxychloride (POCl3) with dimethylamine hydrochloride, ethyl alcohol, and KCN.

Tabun is a war gas that affects the nervous system. The lethal concentration of Tabun in air is 0.4 mg/l (1 min). When brought into contact with the skin in liquid form, the lethal concentration is 50–70 mg/kg. In a concentration of 0.01 mg/l (2 min), Tabun induces pronounced miosis. Gas masks are used to protect against Tabun. The compound was first prepared just before World War II but was not used in the war.

REFERENCE

Franke, S., P. Franz, and W. Warnke. Khimiia otravliaiushchikh veshchestv, vols. 1–2. Moscow, 1973. (Translated from German.)

tabun

[′tä‚bu̇n]
(organic chemistry)
(CH3)2NP(O)(C2H5O)(CN) A toxic liquid with a boiling point of 240°C; soluble in organic solvents; used as a nerve gas.
References in periodicals archive ?
Mientras en el Proximo Oriente tenemos una triple cronologia, la mas antigua del unico enterramiento neandertal en Tabun (TL: 160.
in 1961, the Kennedy administration increases chemical spending from $75 - $330 million; it authorizes Project 112 - a secret program (from 1962 - 1973) to test the effects of biological and chemical weapons on thousands of unwitting US servicemen; Project SHAD was a related project; subjects were exposed to VX, tabun, sarin and soman nerve gases plus other toxic agents;
It has a rapid and broad range of action against various toxic OPs including soman, sarin and tabun, is readily absorbed from injection sites and has a long circulatory retention time.
In mid-May 2003, a month after the aluminium pipes were seized on the Ville de Virgo, North Korea nearly succeeded in acquiring 33 tons of sodium cyanide, a chemical used in making the deadly nerve agent tabun.
Tabun is a colourless, odourless, and relatively volatile liquid.
A pesar de lo que se creia, ciertos estudios revelaron que posee similar grado de proteccion contra el Tabun que la obidoxima.
Members of the chemical, biological, radiological, nuclear, high-explosive (CBRNE) defense community have warned for years about the possible use of toxic industrial chemicals such as chlorine, which may not be as deadly as the weaponized gases such as sarin, VX or tabun, but are easier to acquire.
The nerve agents present are tabun, sarin, soman and VX, the most well known nerve agents.
BChE functions as a natural bioscavenger, like a sponge, to absorb toxins such as organophosphorous (OP), nerve agents (sarin, soman, tabun, VX) and certain pesticides, before they can cause irreversible neurological damage and death.
Tucker points out that the Al-Abud terrorist network in Iraq tried and failed to manufacture mustard gas and tabun in 2004.
com; "Medical Management Guidelines (MMGs) for Nerve Agents: Tabun (GA), Sarin (GB), Soman (GD), and VX," Agency for Toxic Substances and Disease Registry, 2004, http://www.
Tambien, hay "agentes nerviosos" que son sustancias que interfieren con el Sistema Nervioso Central como son: tabun, sarin, soman y vx, que contagian a traves del contacto con liquidos.