ChemicalBook >  Product Catalog >  Inorganic chemistry >  Inorganic salts >  Metal halide and Halogen salt >  Metal iodide and salt >  Potassium periodate

Potassium periodate

Basic information Description References Safety Related Supplier

Potassium periodate Basic information

Product Name:
Potassium periodate
CAS:
7790-21-8
MF:
IKO4
MW:
230
EINECS:
232-196-0
Mol File:
7790-21-8.mol
More
Less

Potassium periodate Chemical Properties

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
Odor
Odorless
PH
pH (5g/l, 25℃) : 4.5~5.5
PH Range
4.5 - 5.5
Water Solubility 
0.42 g/100 mL (20 ºC)
Merck 
14,7654
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)
More
Less

Safety Information

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
3
TSCA 
Yes
HazardClass 
5.1
PackingGroup 
II
HS Code 
28299000

MSDS

More
Less

Potassium periodate Usage And Synthesis

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

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.

Hazard

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

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

Preparation Products

Raw materials

More
Less

Potassium periodateSupplierMore

Alfa Aesar Gold
Tel:
400-610-6006; 021-67582000
Email:
saleschina@alfa-asia.com
Shandong Ono Chemical Co., Ltd. Gold
Tel:
0539-6362799(To 20)
Email:
861669111@qq.com
J & K SCIENTIFIC LTD.
Tel:
010-82848833- ;010-82848833-
Email:
jkinfo@jkchemical.com;market6@jkchemical.com
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel:
21-61259100-
Email:
sh@meryer.com
Energy Chemical
Tel:
021-58432009
Email:
sales8178@energy-chemical.com
Basic information Description References Safety Related Supplier