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Merck

210056

Potassium periodate

99.8%, ACS reagent

Synonym(s):

Periodic acid potassium salt, Potassium (meta)periodate

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About This Item

Linear Formula:
KIO4
CAS Number:
7790-21-8
Molecular Weight:
230.00
NACRES:
NA.21
PubChem Substance ID:
329752072
UNSPSC Code:
12352300
EC Number:
232-196-0
MDL number:
MFCD00011407
Assay:
99.8%, 99.8-100.3% (ACS specification)
Grade:
ACS reagent
Form:
powder
Solubility:
water: soluble (0.42 g/l at 20 °C (68 °F))

Key Documents

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InChI key

FJVZDOGVDJCCCR-UHFFFAOYSA-M

InChI

1S/HIO4.K/c2-1(3,4)5;/h(H,2,3,4,5);/q;+1/p-1

SMILES string

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

grade

ACS reagent

assay

99.8%, 99.8-100.3% (ACS specification)

form

powder

reaction suitability

reagent type: oxidant

impurities

≤0.01% other halogens

pH

~5.1 (25 °C, 5 g/L)

mp

582 °C (lit.)

Quality Level

200

solubility

water: soluble (0.42 g/l at 20 °C (68 °F))

cation traces

Mn: ≤1 ppm

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General description

Potassium periodate is widely used as an oxidizing agent. It produces singlet oxygen (1O2) in alkaline medium via a non-photochemical pathway. This singlet oxygen can selectively oxidizes aqueous organic pollutants.

Application

Potassium periodate may be employed as a chromogenic reagent for the sensitive estimation of phenothiazine drugs (either in pure form or in pharmaceutical formulations). It may also be used in the following:
  • To compose silica-based slurries for polishing of ruthenium surface.
  • To prepare slurry containing glycine for ruthenium and copper polishing.
  • Spectrophotometric estimation of manganese in soil and fertilizer samples.4

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Danger

Hazard Classifications

Aquatic Acute 1 - Eye Dam. 1 - Ox. Sol. 1 - Skin Corr. 1C - STOT RE 1

target_organs

Thyroid

Storage Class

5.1A - Strongly oxidizing hazardous materials

wgk

WGK 3

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Certificates of Analysis (COA)

Lot/Batch Number
MKCQ8277
MKCP6157
MKCN6873
MKCM6798
MKCL5726

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Ruthenium polishing using potassium periodate as the oxidizer and silica abrasives.
Peethala BC and Babu SV.
Journal of the Electrochemical Society, 158(3), H271-H276 (2011)
Improved removal selectivity of ruthenium and copper by glycine in potassium periodate (KIO4)-based slurry.
Zeng X, et al.
Journal of the Electrochemical Society, 159(11), C525-C529 (2012)
Milne GWA.
Gardner's Commercially Important Chemicals: Synonyms, Trade Names, and Properties, 513-513 (2005)
Alok D Bokare et al.
Environmental science & technology, 49(24), 14392-14400 (2015-11-26)
A nonphotochemical generation of singlet oxygen ((1)O2) using potassium periodate (KIO4) in alkaline condition (pH > 8) was investigated for selective oxidation of aqueous organic pollutants. The generation of (1)O2 was initiated by the spontaneous reaction between IO4(-) and hydroxyl
Determination of some phenothiazine drugs based on colour reaction with potassium periodate.
Basavaiah K, et al.
Analytical Letters, 33(1), 43-51 (2000)
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