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
- Molecular Weight:
- 232.01
- MDL Number:
- MFCD00011407
- MOL File:
- 7790-21-8.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| 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 | ||||||||||||||
| Oxidising Properties | The substance or mixture is classified as oxidizing with the subcategory 2 | ||||||||||||||
| Water Solubility | 0.42 g/100 mL (20 ºC) | ||||||||||||||
| Merck | 14,7654 | ||||||||||||||
| crystal system | square | ||||||||||||||
| Space group | I41/a | ||||||||||||||
| Lattice constant |
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| Stability | Stable. Strong oxidizer - contact with combustible materials may cause fire. Incompatible with organic material, combustible material, strong reducing agents, powdered metals. | ||||||||||||||
| InChI | 1S/HIO4.K/c2-1(3,4)5;/h(H,2,3,4,5);/q;+1/p-1 | ||||||||||||||
| InChIKey | FJVZDOGVDJCCCR-UHFFFAOYSA-M | ||||||||||||||
| SMILES | [K+].[O-]I(=O)(=O)=O | ||||||||||||||
| CAS DataBase Reference | 7790-21-8(CAS DataBase Reference) | ||||||||||||||
| FDA UNII | Q3LOC6P66L | ||||||||||||||
| EPA Substance Registry System | Periodic acid (HIO4), potassium salt (7790-21-8) | ||||||||||||||
| UNSPSC Code | 12352300 | ||||||||||||||
| NACRES | NB.24 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS03,GHS07 |
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|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H272-H315-H319-H335 | |||||||||
| Precautionary statements | P264-P280-P261-P271-P302+P352-P332+P313-P362+P364-P305+P351+P338-P337+P313-P304+P340-P312-P403+P233-P405-P501 | |||||||||
| target organs | Thyroid | |||||||||
| 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 | TSCA listed | |||||||||
| HazardClass | 5.1 | |||||||||
| PackingGroup | II | |||||||||
| HS Code | 28299000 | |||||||||
| Storage Class | 5.1A - Strongly oxidizing hazardous materials | |||||||||
| Hazard Classifications | Aquatic Acute 1 Eye Dam. 1 Ox. Sol. 1 Skin Corr. 1C STOT RE 1 |
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| NFPA 704 |
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Potassium periodate price More Price(41)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 210056 | Potassium periodate ACS reagent, 99.8% | 7790-21-8 | 100g | $228 | 2026-04-30 | Buy |
| Sigma-Aldrich | 210056 | Potassium periodate ACS reagent, 99.8% | 7790-21-8 | 500g | $466 | 2026-04-30 | Buy |
| Usbiological | 288051 | Potassium periodate meta Asreported | 7790-21-8 | 500g | $418 | 2026-06-03 | Buy |
| Usbiological | 241343 | Potassium periodate, 99.8-100.3% ACS 99.8-100.3%(Titration) | 7790-21-8 | 100g | $206 | 2026-06-03 | Buy |
| Usbiological | 288051 | Potassium periodate meta Asreported | 7790-21-8 | 1kg | $645 | 2026-06-03 | Buy |
Potassium periodate Chemical Properties,Uses,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
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.
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.
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
1of2
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Qingdao Tocean iodine products co. LTD | 18669835223 | tuohaidian@163.com | China | 49 | 58 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44850 | 61 |
| JinYan Chemicals(ShangHai) Co.,Ltd. | 13817811078 | sales@jingyan-chemical.com | China | 9963 | 60 |
| Shanghai Hanhong Scientific Co.,Ltd. | 021-54306202 13764082696 | info@hanhongsci.com | China | 42917 | 64 |
| Shandong Xiya Chemical Co., Ltd | 13355009207 13355009207 | 3007715519@qq.com | China | 18722 | 57 |
| Sichuan Kulinan Technology Co., Ltd | 400-1166-196 18981987031 | cdhxsj@163.com | China | 11674 | 57 |
| Tianjin heowns Biochemical Technology Co., Ltd. | 400 638 7771 | sales@heowns.com | China | 14412 | 57 |
| Sinopharm Chemical Reagent Co,Ltd. | 86-21-63210123 | sj_scrc@sinopharm.com | China | 9791 | 79 |
View Lastest Price from Potassium periodate manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-03-20 | Potassium periodate
7790-21-8
|
$1.00 | 1kg | 99% | 10 mt | Hebei Chuanghai Biotechnology Co., Ltd | |
 |
2023-07-19 | Potassium periodate
7790-21-8
|
$30.00 | 1KG | 99% | 20 Tons | Wuhan wingroup Pharmaceutical Co., Ltd | |
 |
2021-07-02 | Potassium periodate
7790-21-8
|
$10.00-15.00 | 1KG | 99%+ HPLC | Zhuozhou Wenxi import and Export Co., Ltd |
-
- Potassium periodate
7790-21-8
- $1.00
- 99%
- Hebei Chuanghai Biotechnology Co., Ltd
-
- Potassium periodate
7790-21-8
- $30.00
- 99%
- Wuhan wingroup Pharmaceutical Co., Ltd
-
- Potassium periodate
7790-21-8
- $10.00-15.00
- 99%+ HPLC
- Zhuozhou Wenxi import and Export Co., Ltd
