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Iodic acid

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Products Intro: Product Name:Iodic acid
CAS:7782-68-5
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CAS:7782-68-5
Purity:99% Package:1kg;1USD
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CAS:7782-68-5
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Products Intro: Product Name:Iodic acid, 99.5%, ACS reagent
CAS:7782-68-5
Purity:99.5% Package:100G;500G
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Products Intro: Product Name:Iodic acid, for analysis ACS
CAS:7782-68-5
Purity:99.6% Remarks:42381

Lastest Price from Iodic acid manufacturers

  • Iodic acid
  • US $1.00 / kg
  • 2018-12-21
  • CAS:7782-68-5
  • Min. Order: 1kg
  • Purity: 99%
  • Supply Ability: Customized
Iodic acid Basic information
Physical Properties Uses Preparation
Product Name:Iodic acid
Synonyms:IODIC (V) ACID;IODIC ACID;HYDROGEN IODATE;10dicacid;Iodic acid, 99% min.;Iodic acid ACS reagent, >=99.5%;iodic;iodicacid(hio3)
CAS:7782-68-5
MF:HIO3
MW:175.91061
EINECS:231-962-1
Product Categories:Pharmaceutical Intermediates;Inorganics;Acids&Bases;ACS GradeChemical Synthesis;Essential Chemicals;Inorganic Acids;Synthetic Reagents
Mol File:7782-68-5.mol
Iodic acid Structure
Iodic acid Chemical Properties
Melting point 110°C (dec.)
density 4.62
form Solid
color White to off-white
Water Solubility 269 g/100 mL (20 ºC)
Sensitive Light Sensitive
Merck 14,5012
Stability:Stable. Incompatible with strong reducing agents, alcohols, organic materials. Light-sensitive.
InChIKeyICIWUVCWSCSTAQ-UHFFFAOYSA-N
CAS DataBase Reference7782-68-5(CAS DataBase Reference)
EPA Substance Registry SystemIodic acid (HIO3)(7782-68-5)
Safety Information
Hazard Codes O,C
Risk Statements 8-34
Safety Statements 17-26-36/37/39-45
RIDADR UN 3085 5.1/PG 2
WGK Germany 3
8
TSCA Yes
HazardClass 5.1
PackingGroup II
HS Code 28111980
MSDS Information
ProviderLanguage
Iodic acid English
SigmaAldrich English
ACROS English
ALFA English
Iodic acid Usage And Synthesis
Physical PropertiesWhite stable crystalline solid; rhombohedral crystals; occurs in two forms: the normal HIO3, and pyroiodic acid HI3O8.
UsesAqueous solutions of iodic acid serve as strong oxidizing agents. The acid also is used in redox titrations.
PreparationIodic acid may be prepared by the reaction of sulfuric acid with barium iodate. The solution is filtered to remove barium sulfate and then crystallized to obtain iodic acid:
Ba(IO3)2 + H2SO4 → BaSO4 + 2HIO3
It also may be produced by oxidation of iodine with concentrated nitric acid:
3I2 + 10HNO3 → 6HIO3 + 10NO + 2H2O
Also, iodic acid may be obtained by oxidation of iodine with chlorine in dilute acidic solutions:
I2 + 5Cl2 + 6H2O → 2HIO3 + 10HCl
Another method of preparation involves oxidation of iodine with hydrogen peroxide:
I2 + 5H2O2 → 2HIO3 + 4H2O
It also may be prepared by treating hypoiodous acid with a base:
3HIO + 2OH¯ → HIO3 + 2H2O + I¯
Hypoiodous acid may be obtained by alkaline hydrolysis of iodine at pH 12:
I2 + H2O → HIO + H+ + I¯
Iodic acid dehydrates to iodine pentaoxide when heated at 180°C:
2HIO3 → I2H5 + H2O
Iodic acid is a relatively weak monoprotic acid, the Ka value at 25°C is 1.6 x 10–1. Several species have been detected in concentrated aqueous solutions, which include IO3¯, H+, HIO3, (HIO3)2 and (HIO3)3. Its solution turns blue litmus red and then bleaches the litmus paper because of its strong oxidizing properties.
When heated with potassium iodate, potassium hydrogen iodate is formed:
HIO3 + KIO3 → KH(IO3)2
An aqueous solution of iodic acid is a strong oxidizing agent. It liberates iodine from iodides:
IO3¯ + 5I¯ + 6H+ → 3I2 + 3H2O or,
HIO3 + 5HI → 3I2 + 3H2O
In an aqueous solution, iodic acid oxidizes hydrogen sulfide to sulfur:
2HIO3 + 5H2S → I2 + 6H2O + 5S
The solid iodic acid reacts vigorously with sulfur, phosphorus and other nonmetals.
Chemical Propertiescolorless, rhomb crystal(s) or white, crystal(s) powder(s); darkens on exposure to light; it is a moderately strong acid; used in analytical chemistry and in medicine [HAW93] [MER06]
UsesA strong acid in analytical chemistry.
HazardToxic by ingestion, strong irritant to eyes and skin.
Purification MethodsDissolve iodic acid in the minimum volume of hot dilute HNO3, filter and evaporate in a vacuum desiccator until crystals are formed. Collect the crystals and wash them with a little cold H2O and dry them in air in the dark. It is soluble in H2O: 269g/100mL at 20o and 295g/100mL at 40o. It is soluble in dilute EtOH and darkens on exposure to light. It is converted to HIO3.I2O5 on heating at 70o, but at 220o complete conversion to HIO3 occurs. [Lamb et al. J Am Chem Soc 42 1636 1920, Bray & Caulkins J Am Chem Soc 53 44 1931.]
Tag:Iodic acid(7782-68-5) Related Product Information
IODIC ACID ACS REAGENT Iodic acid (HIO3), calcium salt, hexahydrate IODIC ACID ANHYDRIDE Iodic acid (HIO3), magnesium salt, tetrahydrate Iodic acid cesium salt Iodic acid ACETIC ACID Potassium periodate Ascoric Acid phosphoric acid PERIODIC ACID Iodic acid potassium salt Folic acid Calcium iodate Hydriodic acid Citric acid Sodium iodate Sodium periodate