Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
Chemical compound
Selenious Acid
Clinical data
AHFS/Drugs.com
Monograph
License data
US DailyMed: Selenious_acid
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DrugBank
DB11127
CompTox Dashboard (EPA)
DTXSID9024300
ECHA InfoCard
100.029.067
Selenous acid (or selenious acid) is the chemical compound with the formula H2SeO3. Structurally, it is more accurately described by O=Se(OH)2. It is the principal oxoacid of selenium; the other being selenic acid.
^Lide DR (1998). Handbook of Chemistry and Physics (87 ed.). Boca Raton, Florida: CRC Press. pp. 4–81. ISBN 0-8493-0594-2.
selenium; the other being selenic acid. Selenousacid is analogous to sulfurous acid, but it is more readily isolated. Selenousacid is easily formed upon the...
dissolves in water to form selenousacid, H2SeO3. Selenousacid can also be made directly by oxidizing elemental selenium with nitric acid: 3 Se + 4 HNO3 + H2O...
hydrobromic acid as a side-product, which needs to be removed from the solution since they can reduce the selenic acid to selenousacid. To obtain the...
well as other compounds. It is composed of a mixture of selenousacid and concentrated sulfuric acid, which is dripped onto the substance being tested. The...
Selenium oxide may refer to either of the following compounds: Selenium dioxide, SeO2 Selenium trioxide, SeO3 Diselenium pentoxide, Se2O5 This set index...
An oxyacid, oxoacid, or ternary acid is an acid that contains oxygen. Specifically, it is a compound that contains hydrogen, oxygen, and at least one...
polymer. SeO2 is considered an acidic oxide: it dissolves in water to form selenousacid. Often the terms selenousacid and selenium dioxide are used interchangeably...
Sulfuric(IV) acid (United Kingdom spelling: sulphuric(IV) acid), also known as sulfurous (UK: sulphurous) acid and thionic acid,[citation needed] is the...
hydrogen tellurite, KHTeO3. In contrast to the analogous compound selenousacid, tellurous acid is only metastable. Most tellurite salts contain the TeO2− 3...
and one selenium atom. It is the sodium salt of the conjugate base of selenousacid. This compound finds therapeutic application for providing the essential...
produced by oxidation of selenium, first with nitric acid, producing selenousacid. The selenousacid is neutralized to form sodium selenite. The sodium...
Chlorine, by comparison, is +1.36 V and selenousacid is +0.74 V in oxidizing conditions. The anhydrous acid is stable in air at 100 °C but above this...
that operate in this manner will typically be labeled as containing selenousacid or selenium dioxide. It has also been investigated for use in the treatment...
anion is a selenium oxoanion with the chemical formula SeO32− Selenousacid, the conjugate acid, with the formula H2SeO3 Salts of this anion: Silver selenite...
dissolves in water to form selenousacid, H2SeO3. Selenousacid can also be made directly by oxidizing elemental selenium with nitric acid: 3 Se + 4 HNO 3 + H...
natural gas, to boost the removal of carbon dioxide, as have selenousacid and tellurous acid. Selenium acts as a catalyst in some microorganisms. Tellurium...
papers mainly concerned sulfides, arsenical sulfosalt minerals, and selenousacid, extending the work of Berzelius. In 1874 Nilson became professor of...
This reaction allows the separation of tellurium from selenium since selenousacid remains soluble at low pH. The intermediate in the protonation occurs...
this is not so for bismuth(III). Selenium(IV) is mostly present as selenousacid (H2SeO3) below pH 2; at higher pH this deprotonates to HSeO3− and then...
loss, anemia, and dermatitis. In many cases of selenium poisoning, selenousacid is formed in the body. Hydrogen selenide (H2Se) is highly toxic. Exposure...
with water and various acids. For example, it reacts with nitric acid to form selenousacid. It also reacts with various metals, such as calcium, to produce...
chloroform and ethyl bromide, but decomposes in water, so that it produces selenousacid in wet air. The compound is only stable under a bromine-saturated atmosphere;...
SeO3 + 2 KOH → K2SeO4 + H2O Alternatively, it can be made by treating selenousacid with potassium hydroxide, followed by oxidation of the resulting potassium...
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