Difference between revisions of "Iodic acid"
Physchim62 (talk | contribs) |
Physchim62 (talk | contribs) |
||
Line 3: | Line 3: | ||
| Section1 = {{Chembox Identifiers | | Section1 = {{Chembox Identifiers | ||
| CASNo = 7782-68-5 | | CASNo = 7782-68-5 | ||
+ | | CASNo_Ref = {{cascite}} | ||
| EINECS = 231-962-1 | | EINECS = 231-962-1 | ||
| ChemSpiderID = 22761 | | ChemSpiderID = 22761 | ||
Line 11: | Line 12: | ||
}} | }} | ||
| Section2 = {{Chembox Properties | | Section2 = {{Chembox Properties | ||
− | | Reference = <ref name="G&E">{{Greenwood&Earnshaw1st|page=1010}}.</ref> | + | | Reference = <ref name="G&E">{{Greenwood&Earnshaw1st|page=1010}}.</ref><ref>{{RubberBible62nd|page=B-106}}.</ref> |
| Formula = HIO<sub>3</sub> | | Formula = HIO<sub>3</sub> | ||
| MolarMass = 175.91 g mol<sup>−1</sup> | | MolarMass = 175.91 g mol<sup>−1</sup> | ||
| Appearance = white crystals | | Appearance = white crystals | ||
− | | Density = | + | | Density = 4.629 g cm<sup>−3</sup> |
| MeltingPt = 100 °C ''decomp.'' | | MeltingPt = 100 °C ''decomp.'' | ||
− | | Solubility = | + | | Solubility = 286 g/100 ml (0 °C)<br/>473 g/100 ml (80 °C) |
| SolubleOther = | | SolubleOther = | ||
| Solvent = | | Solvent = | ||
Line 24: | Line 25: | ||
| Section3 = {{Chembox Structure | | Section3 = {{Chembox Structure | ||
| Reference = <ref name="G&E"/> | | Reference = <ref name="G&E"/> | ||
− | |||
− | |||
| MolShape = pyramidal; ''r''(I=O) = 181 pm, ''r''(I–OH) = 189 pm, O=I=O = 101.4°, O=I–OH = 97° | | MolShape = pyramidal; ''r''(I=O) = 181 pm, ''r''(I–OH) = 189 pm, O=I=O = 101.4°, O=I–OH = 97° | ||
}} | }} |
Revision as of 10:29, 10 September 2010
Iodic acid | |
---|---|
IUPAC name | iodic acid |
Identifiers | |
InChI | InChI=InChI=1S/HIO3/c2-1(3)4/h(H,2,3,4) |
InChIKey | ICIWUVCWSCSTAQ-UHFFFAOYAT |
Standard InChI | InChI=1S/HIO3/c2-1(3)4/h(H,2,3,4) |
Standard InChIKey | ICIWUVCWSCSTAQ-UHFFFAOYSA-N |
CAS number | [ ] |
EC number | |
ChemSpider | |
Properties[1][2] | |
Chemical formula | HIO3 |
Molar mass | 175.91 g mol−1 |
Appearance | white crystals |
Density | 4.629 g cm−3 |
Melting point |
100 °C decomp. |
Solubility in water | 286 g/100 ml (0 °C) 473 g/100 ml (80 °C) |
Acidity (pKa) | 0.804 |
Structure[1] | |
Molecular geometry | pyramidal; r(I=O) = 181 pm, r(I–OH) = 189 pm, O=I=O = 101.4°, O=I–OH = 97° |
Hazards[3] | |
EU index number | not listed |
GHS pictograms | |
GHS signal word | DANGER |
GHS hazard statements | H272, H314, H318 |
GHS precautionary statements | P210, P220, P221, P260, P264, P280, P301+330+331, P303+361+353, P363, P304+340, P310, P321, P305+351+338, P370+378 |
Flash point | non-flammable |
Related compounds | |
Other anions | Hydriodic acid Periodic acid |
Other compounds | Chloric acid Bromic acid |
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
Iodic acid, HIO3, is a moderately strong oxoacid of iodine. It forms a series of salts called iodates.
Iodic acid may be prepared by the oxidation of suspensions of iodine in water, either by electrolysis or with nitric acid.[1] Unlike chloric and bromic acids, it can be isolated as a white crystalline air-stable solid. The solid decomposes on heating, first to HIO3·I2O5 at about 100 °C, then to iodine pentoxide at about 200 °C.[1]
Notes and references
Notes
References
- ↑ 1.0 1.1 1.2 1.3 Greenwood, Norman N.; Earnshaw, A. Chemistry of the Elements; Pergamon: Oxford, 1984; p 1010. ISBN 0-08-022057-6.
- ↑ CRC Handbook of Chemistry and Physics, 62nd ed.; Weast, Robert C., Ed.; CRC Press: Boca Raton, FL, 1981; p B-106. ISBN 0-8493-0462-8.
- ↑ HSNO Chemical Classification Information Database, <http://www.ermanz.govt.nz/Chemicals/ChemicalDisplay.aspx?SubstanceID=12620> (accessed 9 September 2010), New Zealand Environmental Risk Management Authority.
External links
See also the corresponding article on Wikipedia. |
Error creating thumbnail: Unable to save thumbnail to destination |
This page is currently licensed under the Creative Commons Attribution 3.0 Unported license and any later versions of that license. |