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60450

Sigma-Aldrich

Potassium (meta)periodate

puriss. p.a., ACS reagent, ≥99.8% (dried material, RT)

Synonym(s):

Periodic acid potassium salt, Potassium periodate

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About This Item

Linear Formula:
KIO4
CAS Number:
7790-21-8
Molecular Weight:
230.00
EC Number:
232-196-0
MDL number:
MFCD00011407
UNSPSC Code:
12352300
PubChem Substance ID:
329758991
NACRES:
NB.24
Assay:
≥99.8% (dried material, RT)
form:
crystals

grade

ACS reagent
puriss. p.a.

Assay

≥99.8% (dried material, RT)

form

crystals

loss

≤0.1% loss on drying, 110 °C

pH

~5.1 (25 °C, 5 g/L)

anion traces

bromide, bromate, chloride, chlorate (as Cl-): ≤100 mg/kg
sulfate (SO42-): ≤50 mg/kg

cation traces

Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤50 mg/kg
Mg: ≤5 mg/kg
Mn: ≤1 mg/kg
Na: ≤2000 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

SMILES string

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

InChI

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

InChI key

FJVZDOGVDJCCCR-UHFFFAOYSA-M

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General description

Potassium (meta)periodate exhibits strong oxidizing properties in acidic medium.

Application

Potassium (meta)periodate may be employed as an oxidizing reagent for the oxidation of starch. It may be employed as oxidizer in the iodine bromide method for the volumetric determination of following compounds:
  • potassium iodide
  • arsenious oxide
  • antimonous oxide
  • stannous chloride
  • mercurous chloride
  • sodium sulphite
  • sodium thiosulphate
  • sodium tetrathionate
  • ferrous sulphate
  • potassium thiocyanate
  • hydrazine sulphate
  • phenylhydrazine hydrochloride
  • hydroquinone

Signal Word

Danger

Hazard Statements

H271,H314,H372,H400

Hazard Classifications

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

Target Organs

Thyroid

Storage Class Code

5.1A - Strongly oxidizing hazardous materials

WGK

WGK 3

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Certificates of Analysis (COA)

Lot/Batch Number
BCCB4625

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Potassium meta-periodate as volumetric reagent: Iodine bromide method.
Singh B and Singh A.
Analytica Chimica Acta, 9, 22-25 (1953)
Physicochemical studies on starches. Part II. The oxidation of starches by potassium metaperiodate.
Anderson DMW, et al.
Journal of the Chemical Society, 225-231 (1955)
Jianxiu Du et al.
Luminescence : the journal of biological and chemical luminescence, 25(1), 76-80 (2009-07-25)
A simple and sensitive chemiluminescence (CL) method combined with flow injection technique was developed for the determination of naproxen. It was based upon the weak CL signal arising from the reaction of KIO(4) with H(2)O(2) being significantly increased by naproxen
Zhenghua Song et al.
Journal of pharmaceutical and biomedical analysis, 28(3-4), 683-691 (2002-05-15)
A continuous flow sensor for the determination of thiamine was constructed by using controlled-reagent-release technology in a FIA-CL system. The analytical reagents, luminol and KIO(4), were both immobilized on an anion-exchange column. The CL signal produced by the reaction between
S Kaufmann et al.
Zeitschrift fur Ernahrungswissenschaft, 37(3), 288-293 (1998-11-04)
Iodine deficiency still exists in many countries worldwide, to a certain degree this is also true for Germany. Food of animal origin can be a good source for iodine depending on the feed. To investigate the possible use of laying
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