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As2O3 ARSENIC TRIOXIDE

Inhaled arsine is oxidized to form elemental trivalent arsenic (As ) and arsenous oxide (AS2O3), two human carcinogens. Excess cancers from trivalent arsenic and arsenic trioxide have been associated with cumulative lifetime arsenic exposure. Exposure to arsine above 0.004ppm is associated with increased urinary arsenic excretion, indicating exposure to arsenic. Current exposure limits may not prevent potential chronic toxicity. ... [Pg.58]

Temperature and air feed is carefully controlled in the process to suppress any formation of antimony tetroxide (86204). Antimony trioxide is separated from any arsenic trioxide (AS2O3) that may be present as an impurity by volatilization, as the latter is much more volatile than the former. It may be also prepared by alkaline hydrolysis of antimony trichloride and subsequent dehydration of hydrous oxide under controlled heating (rapid or vigorous heating may partially oxidize 8b(III) to Sb(V). [Pg.57]

A unique use of arsenic, in the form of arsenic trioxide (AS2O3), is for the treatment of cancer. Relapsed or refractory cases of acute promyelocytic leukemia have been successfully treated with this arsenical. Its use in the United States was approved by the US Food and Drug Administration (FDA) in 2000 (Antman, 2001). [Pg.239]

Arsenic Trioxide (Arsenous Acid, Arsenous Acid Anhydride, Arsenious Oxide, Arsenic Sesqui-oxide. White Arsenic). AS2O3, mw 197.82 ... [Pg.449]

The different labelled arsenic compounds have been used to investigate their liquid-liquid distribution in order to develop procedures for the separation of the various arsenic species found in natural waters in human urine and plasma and in plants . Only trimethylarsine, dimethylarsine and methylarsine are completely extracted (more than 98%) into benzene from neutral solutions. All trivalent arsenic species (arsenic trioxide, AS2O3, methyiarsonous acid 74 and dimethylarsinous acid 77) are quantitatively extracted into 0.01 M diethylammonium salt of diethyldithiocarbamic acid in benzene, etc.2 ... [Pg.612]

What weight of arsenic trioxide, AS2O3, is required to prepare 1 L of... [Pg.188]

Arsenic trioxide (AS2O3) or white arsenic, was first shown in 1733 by Brandt as being the oxide of the element. Arsenic trioxide is tasteless and odorless, which favors its use as a lethal poison (see numerous historical and more actual cases recently described in some detail by Bentley and Chasteen... [Pg.1322]

Most arsenic is used in the form of compounds for which AS2O3 is the sole basic material. The largest consumers of arsenic trioxide are the USA, Malaysia and the UK. Arsenic compounds still are or were used in the following fields. [Pg.1328]

Arsenic trioxide (arsenous oxide) Arsenite AS2O3 (or AsaOe) ASO3. As02 ... [Pg.292]

Arsenic has properties between those of metals and non-metals, as well as many similarities to phosphorns. Arsenic is present in almost all natnral metal sulfides, especially those of copper, tin and nickel. It is a highly toxic element. The toxic dose of arsenic trioxide (AS2O3) is on the order of 2 mg/kg body weight. Concentrations of... [Pg.105]

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Arsenic trioxide

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