This section is from the book "Laboratory Manual Of Pharmacology", by A. D. Bush. Also available from Amazon: Laboratory manual of pharmacology.
White Arsenic, or Arsenous Acid, is a sublimation product obtained by roasting arsenical ores.
Properties: | |
Appearance................................................................................................ | Solubility: |
Color.................................................................... | H2O................................................................................. |
Odor ........................................................... | C2H5OH................................................................................ |
Do not taste........................................................................................... | C3H5(OH)3................................................................................. |
HC1 ................................................................................. |
FeCl3, T. S........................................................................................... | AgN03 , T. S.........................................,........................................ |
KI, T. S...................................................................................................... | Ac. Tannic .................................................................................... |
MgS04, T. S........................................................................................... |
What is the Marsh test for the identification of Arsenic?........................................................................
Incompatibilities: To Arsenous Acid, T. S., add
The principal utility of Arsenous Acid is for chorea. Dose, 0.0006 Gm. An unofficial salt, arsenobenzol or salvarsan, containing about 35% arsenic, is extensively used in the treatment of syphilis, relapsing fever, and frambesia or yaws. The dose is about 0.4 Gm., intramuscularly.
Official preparations made from White Arsenic:
Liquor Acidi Arsenosi. Dose, 0.2 mil.
Liquor Potassii Arsenitis (Fowler's Solution). Dose, 0.2 mil.
Other official preparations of Arsenic are: Sodii Arsenas; dose, 0.005 Gm. Sodii Arsenas Exsiccatus; dose, 0.003 Gm. Liquor Sodii Arsenatis; dose, 0.2 mil. Arseni Iodidum; dose, 0.005 Gm. This last salt combines the action of Arsenic and Iodine. The others have the characteristic action of Arsenic.
 
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