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Merck

215929

Potassium iodate

ACS reagent, 99.5%

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About This Item

Linear Formula:
KIO3
CAS Number:
7758-05-6
Molecular Weight:
214.00
NACRES:
NA.21
PubChem Substance ID:
329752178
UNSPSC Code:
12352302
EC Number:
231-831-9
MDL number:
MFCD00011406
Assay:
99.4-100.4% (ACS specification), 99.5%
Grade:
ACS reagent
Form:
powder
Solubility:
water: soluble

Key Documents

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Quality Level

200

InChI key

JLKDVMWYMMLWTI-UHFFFAOYSA-M

InChI

1S/HIO3.K/c2-1(3)4;/h(H,2,3,4);/q;+1/p-1

SMILES string

[K+].[O-]I(=O)=O

grade

ACS reagent

assay

99.4-100.4% (ACS specification), 99.5%

form

powder

impurities

≤0.005% N compounds, ≤0.005% insolubles

pH

5.0-8.0 (25 °C, 5%)

mp

560 °C (lit.)

solubility

water: soluble

density

3.93 g/mL at 25 °C (lit.)

anion traces

chloride, bromide (as Cl)-: ≤0.01%, iodide (I-): ≤0.001%, sulfate (SO42-): ≤0.005%

cation traces

Fe: ≤0.001%, Na: ≤0.005%, heavy metals: ≤5 ppm (by ICP-OES)

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General description

KIO3 can be used as a substitute of KI in radiation protection. A kinetic study of thermal degradation of KIO3 by γ-rays suggests that rate of decomposition increases while activation energy decreases upon irradiation.

Application

Potassium iodate (KIO3) may be used as an oxidizing agent in the estimation of hydrolyzable tannins (gallotannins and ellagitannins) in plant samples. It may also be used in the preparation of polyaniline, poly(o-anisidine), poly[aniline-co-(o-anisidine) and TiO2 nanoparticles.

signalword

Danger

Storage Class

5.1B - Oxidizing hazardous materials

wgk

WGK 1

flash_point_f

does not flash

flash_point_c

does not flash

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Ox. Sol. 2 - Repr. 2

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Group 1: Oxidizing solids + Iodates + Hazardous rank I + 1st oxidizing solid

fsl

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

215929-VAR: + 215929-500G:4548173993034 + 215929-BULK: + 215929-12KG:4548173993027 + 215929-100G:4548173993010 + 215929-2.5KG: + 215929-4X2.5KG: + 215929-5G:4548173993041

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Certificates of Analysis (COA)

Lot/Batch Number
MKCQ8066
MKCQ4324
MKCQ4322
MKCP8519
MKCP8518

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Mechanistic study of osmium (VIII) promoted oxidation of crotonic acid by aqueous alkaline solution of potassium iodate
Singh B, et al.
Indian Journal of Chemistry, 54, 1387-1393 (2015)
Thermal decomposition kinetics of potassium iodate.
Muraleedharan K.
Journal of Thermal Analysis and Calorimetry, 114(2), 491-496 (2013)
Synthesis and properties of polyaniline, poly (o-anisidine), and poly [aniline-co-(o-anisidine)] using potassium iodate oxidizing agent
Neetika M, et al.
High Performance Polymers (2016)
Yawen Wang et al.
Journal of colloid and interface science, 430, 31-39 (2014-07-07)
In this paper, we report a novel polyol process to synthesize highly water-dispersible anatase titanium dioxide (TiO2) nanoparticles (∼5 nm) by the introduction of inorganic oxidizing agent--KIO3. The obtained TiO2 nanoparticles are well dispersible in water at pH≥5.0 and the
Paul W Hartzfeld et al.
Journal of agricultural and food chemistry, 50(7), 1785-1790 (2002-03-21)
A widely used method for analyzing hydrolyzable tannins afer reaction with KIO(3) has been modified to include a methanolysis step followed by oxidation with KIO(3). In the new method, hydrolyzable tannins (gallotannins and ellagitannins) are reacted at 85 degrees C
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