Description References
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Potassium periodate

Description References
Product Name
Potassium periodate
CAS No.
7790-21-8
Chemical Name
Potassium periodate
Synonyms
POTASSIUM METAPERIODATE;ACS， 99.8%-100.3%;POTASSIUM PERIODATE;Potassium ｍ-Perioda;POTASSIUM M-PERIODATE;PotassiumPeriodateKIO4;Potassium periodate 99%;PotassiumMetaperiodateGr;potassium periodate, acs;Potassium metaperiodiate
CBNumber
CB7738229
Molecular Formula
H2IKO4
Formula Weight
232.01
MOL File
7790-21-8.mol
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Potassium periodate Property

Melting point:
582 °C
Boiling point:
explodes [HAW93]
Density 
3.618
vapor density 
7.9 (vs air)
storage temp. 
2-8°C
solubility 
H2O: 0.01 M at 20 °C, clear, colorless
form 
Powder/Solid
color 
White to off-white
Specific Gravity
3.618
PH
pH (5g/l, 25℃) : 4.5～5.5
Odor
Odorless
PH Range
4.5 - 5.5
Water Solubility 
0.42 g/100 mL (20 ºC)
Merck 
14,7654
crystal system
square
Space group
I41/a
Lattice constant
a/nmb/nmc/nmα/oβ/oγ/oV/nm3
0.57260.57261.2607909090
Stability:
Stable. Strong oxidizer - contact with combustible materials may cause fire. Incompatible with organic material, combustible material, strong reducing agents, powdered metals.
CAS DataBase Reference
7790-21-8(CAS DataBase Reference)
EPA Substance Registry System
Periodic acid (HIO4), potassium salt (7790-21-8)
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Safety

Hazard Codes 
O,Xi
Risk Statements 
8-36/37/38
Safety Statements 
17-26-36-37/39
RIDADR 
UN 1479 5.1/PG 2
WGK Germany 
3
F 
3
TSCA 
Yes
HazardClass 
5.1
PackingGroup 
II
HS Code 
28299000
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H271May cause fire or explosion; strong oxidiser

H314Causes severe skin burns and eye damage

H372Causes damage to organs through prolonged or repeated exposure

H400Very toxic to aquatic life

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
210056
Product name
Potassium periodate
Purity
ACS reagent, 99.8%
Packaging
100g
Price
$217
Updated
2025/07/31
Sigma-Aldrich
Product number
210056
Product name
Potassium periodate
Purity
ACS reagent, 99.8%
Packaging
500g
Price
$353.6
Updated
2025/07/31
GFS CHEMICALS
Product number
61501
Product name
Potassium (meta)periodate
Packaging
100g
Price
$74.15
Updated
2021/12/16
Usbiological
Product number
288051
Product name
Potassium periodate meta
Packaging
500g
Price
$418
Updated
2021/12/16
GFS CHEMICALS
Product number
61404
Product name
POTASSIUMPERIODATE,COMM
Packaging
10Kg
Price
$2666.97
Updated
2021/12/16
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Potassium periodate Chemical Properties,Usage,Production

Description

Potassium periodate (chemical formula: KIO4) is a kind of inorganic salt composed of a potassium cation and a periodate anion. It can be used for the determination of potassium and cerium owing to its low solubility of KIO4. It can be used an oxidizing agent, and as a source of oxygen. It can also be used for the determination of the concentration of other compounds through measuring the reaction between DPC (sc-202590) and KIO4. It can be synthesize through the oxidation of potassium iodate through chlorine and potassium hydroxide, or by the electrochemical oxidation of potassium iodate.

References

https://www.scbt.com/scbt/product/potassium-periodate-7790-21-8
https://en.wikipedia.org/wiki/Potassium_periodate

Chemical Properties

colourless crystals or white crystalline powder

Physical properties

Colorless tetragonal crystals; density 3.618 g/cm3; melts at 582°C; slightly soluble in water at ordinary temperatures, 0.42 g/100mL at 20°C; moderately soluble in hot water, 4.4 g/100mL at 80°C.

Uses

For the colorimetric determination of Mn (oxidizes manganese compounds to permanganates), as oxidizing agentPotassium periodate is used as an oxidizing agent in organic synthesis and an analytical reagent for the determination of potassium and cerium. It is also used in colorimetric estimation of manganese. It reacts with ammonium cerium(IV) nitrate to prepare tris[trinitratocerium(IV)] paraperiodate which finds application as an oxidant.

Uses

Powerful oxidizer in acid solution, oxidizing manganese Compounds to permanganate; used for this purpose in analytical chemistry (colorimetric estimation of Mn), also for the oxidation of some organic Compounds.

Preparation

Potassium periodate can be prepared by oxidation of potassium iodate with a powerful oxidizing agent such as potassium permanganate, chlorine or bromine in basic solution:
IO3ˉ+ Cl2+ 2OHˉ→IO4ˉ+ 2Clˉ+ H2O
Also, the salt may be prepared by electrolysis.

Production Methods

Potassium periodate, KlO4, white solid, formed by electrolysis of potassium iodate under proper conditions.

General Description

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

Hazard

Fire risk in contact with organic materials, strong oxidizing agent. Strong irritant to tissue.

reaction suitability

reagent type: oxidant

Purification Methods

Crystallise it from distilled water. Its solubility in H2O is 0.2% at 0o, 0.4% at 20o, 4.4% at 80o. and 7.9% at 100o. [Hill Inorg Synth I 171 1939, Schmeisser in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 325 1963.]

Potassium periodate Preparation Products And Raw materials

Raw materials

iodine Periodic acid Potassium hydroxide solution Iodine Potassium nitrate

Preparation Products

potassmm iodate for food XANTHOTOXOL
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Belgium 1 Canada 2 China 187 Czech Republic 1 Europe 3 France 2 Germany 3 India 25 Japan 5 Switzerland 1 United Kingdom 9 United States 42 Global 281
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View Lastest Price from Potassium periodate manufacturers

Hebei Chuanghai Biotechnology Co., Ltd
Product
Potassium periodate 7790-21-8
Price
US $1.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
10 mt
Release date
2024-11-21
Zhuozhou Wenxi import and Export Co., Ltd
Product
Potassium periodate 7790-21-8
Price
US $15.00-10.00/KG
Min. Order
1KG
Purity
99%+ HPLC
Supply Ability
Monthly supply of 1 ton
Release date
2021-06-27
Career Henan Chemical Co
Product
Potassium periodate 7790-21-8
Price
US $1.00/KG
Min. Order
1KG
Purity
98% HPLC
Supply Ability
10t
Release date
2019-12-20

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