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Iodic acid
Ball-and-stick model of iodic acid
Space-filling model of iodic acid
Names
Other names
Iodic(V) acid
Identifiers
CAS Number
7782-68-5Y
3D model (JSmol)
Interactive image
ChEBI
CHEBI:24857Y
ChEMBL
ChEMBL1161636Y
ChemSpider
22761Y
ECHA InfoCard
100.029.056
PubChem CID
24345
UNII
6U8J18JSBMY
CompTox Dashboard (EPA)
DTXSID2064812
InChI
InChI=1S/HIO3/c2-1(3)4/h(H,2,3,4)Y
Key: ICIWUVCWSCSTAQ-UHFFFAOYSA-NY
InChI=1/HIO3/c2-1(3)4/h(H,2,3,4)
Key: ICIWUVCWSCSTAQ-UHFFFAOYAT
SMILES
O[I+2]([O-])[O-]
Properties
Chemical formula
HIO3
Molar mass
175.91 g/mol
Appearance
White solid
Density
4.62 g/cm3, solid
Melting point
110 °C (230 °F; 383 K)
Solubility in water
269 g/100 mL (20 °C)
Acidity (pKa)
0.75
Conjugate base
Iodate
Magnetic susceptibility (χ)
−48.0·10−6 cm3/mol
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
acid, corrosive, oxidant
GHS labelling:[1]
Pictograms
Signal word
Danger
NFPA 704 (fire diamond)
3
0
1
OX
Flash point
Non-flammable
Related compounds
Other cations
Lithium iodate Potassium iodate
Related halogen oxoacids
Chloric acid Bromic acid
Related compounds
Hydroiodic acid Iodine pentoxide Periodic acid
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
Iodic acid is a white water-soluble solid with the chemical formula HIO3. Its robustness contrasts with the instability of chloric acid and bromic acid. Iodic acid features iodine in the oxidation state +5 and is one of the most stable oxo-acids of the halogens. When heated, samples dehydrate to give iodine pentoxide. On further heating, the iodine pentoxide further decomposes, giving a mix of iodine, oxygen and lower oxides of iodine.
Iodicacid is a white water-soluble solid with the chemical formula HIO3. Its robustness contrasts with the instability of chloric acid and bromic acid...
reacting a potassium-containing base such as potassium hydroxide with iodicacid, for example: HIO3 + KOH → KIO3 + H2O It can also be prepared by adding...
Sodium iodate (NaIO3) is the sodium salt of iodicacid. Sodium iodate is an oxidizing agent. It has several uses. It can be prepared by reacting a sodium-containing...
two forms: orthoperiodic acid, with the chemical formula H5IO6, and metaperiodic acid, which has the formula HIO4. Periodic acid was discovered by Heinrich...
iodine-containing ores. Iodate salts are often colorless. They are the salts of iodicacid. Iodate is pyramidal in structure. The O–I–O angles range from 97° to...
iodine oxide is the anhydride of iodicacid, and the only stable oxide of iodine. It is produced by dehydrating iodicacid at 200 °C in a stream of dry air:...
schwefliger Säure" [On the duration of the reaction between iodicacid and sulfurous acid]. Berichte der Deutschen Chemischen Gesellschaft (in German)...
purpose of adding the nitric acid is to oxidise the carbon and hydrogen. Concentrated nitric acid only oxidises iodine to iodicacid and doesn't affect any...
important are the four oxoacids: hypoiodous acid (HIO), iodous acid (HIO2), iodicacid (HIO3), and periodic acid (HIO4 or H5IO6). When iodine dissolves in...
"period", but from "iodine": per-iodicacid (compare iodicacid, perchloric acid), and it is thus pronounced per-iodic /ˌpɜːraɪˈɒdɪk/ PUR-eye-OD-ik, and...
derivatives and hydrolysis of ethylene glycol with periodic acid. The produced iodicacid is detected with silver nitrate. Ethylene oxide is extremely...
compound can be prepared by reacting sulphuric acid with iodicacid or by the action of concentrated nitric acid upon dry powedered iodine. It forms yellow...
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...
obtained by reacting bismuth nitrate and iodicacid, dissolving the resulting precipitate in 7.8 mol/L nitric acid, and heating to volatilize and crystallize...
the salts can be prepared from preformed hypervalent iodines such as iodicacid, iodosyl sulfate or iodosyl triflate. The first such compound was synthesised...
important are the four oxoacids: hypoiodous acid (HIO), iodous acid (HIO2), iodicacid (HIO3), and periodic acid (HIO4 or H5IO6). When iodine dissolves in...
radium and iodicacid with the chemical formula Ra(IO3)2. Radium iodate is obtained by the reaction of a soluble radium salt and iodicacid:[citation needed]...
I2 + 9 O3 → I4O9 + 9 O2 It can also be produced by heating iodicacid and phosphoric acid together: 8 HIO3 → 2 I4O9 + 4 H2O + O2 Tetraiodine nonoxide...
chromate iodates. Iodate sulfates can be produced from water solutions of iodicacid and sulfate salts. Lu, Huangjie; Guo, Xiaojing; Wang, Yaxing; Diefenbach...
Iodine monochloride is soluble in acids such as HF and HCl but reacts with pure water to form HCl, iodine, and iodicacid: ICl + H2O → HCl + HI + 1⁄2O2 2...
obtained by the reaction of dysprosium nitrate or dysprosium chloride and iodicacid at 200 °C. It exists in two crystal forms: α-form and β-form. Its solubility...
investigations into the kinetics of the iodine clock reaction between iodicacid and sulfurous acid. From 1891 till his retirement in 1905, he served as director...
ozone depletion agents. Diiodine pentoxide (I2O5) is the anhydride of iodicacid and the only stable anhydride of an iodine oxoacid. Tetraiodine nonoxide...
oxidizer. Ammonium iodate can be obtained by neutralising a solution of iodicacid with ammonia. HIO3 + NH3 → NH4IO3 Using its low solubility in water, it...
dioscorine: 1) A solution of this alkaloid in sulfuric acid turns yellow when a small amount of iodicacid is added to it. From the edge, the yellow color changes...
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