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Potassium iodate

Potassium iodate
Potassium iodate structure
Chemical Name:
Potassium iodate
POTASSIUM IODATE;Potassium Iddate;Potassium Lodate;potassinm iodate;PotassiumIodateBp;Potassium triodate;BAIRD PARKERAR BASE;POTASSIUM IODATE GR;Potassiumiodate,98%;POTASSIUM IODATE, ACS
Molecular Formula:
Formula Weight:
MOL File:

Potassium iodate Properties

Melting point:
560 °C(lit.)
3.93 g/mL at 25 °C(lit.)
storage temp. 
Store at +5°C to +30°C.
H2O: 0.1 M at 20 °C, clear, colorless
White to off-white
6 (50g/l, H2O, 20℃)
Water Solubility 
Solubility Product Constant (Ksp)
pKsp: 3.43
Stable. Materials to avoid include organics, combustibles, phosphorus, sulfur, carbon, powdered metals, cyanides, hydrides, strong reducing agents, aluminium, peroxides. Explosive when mixed with combustible material.
184.1635; 582.80
Substances Added to Food (formerly EAFUS)
SCOGS (Select Committee on GRAS Substances)
Potassium iodate
CAS DataBase Reference
7758-05-6(CAS DataBase Reference)
EPA Substance Registry System
Potassium iodate (7758-05-6)
  • Risk and Safety Statements
Signal word  Danger
Hazard statements  H272-H315-H319-H335
Precautionary statements  P220-P261-P305+P351+P338-P210a-P221-P405-P501a
Hazard Codes  O,Xi,Xn,T
Risk Statements  8-36/37/38-22-61-20/21/22
Safety Statements  26-37/39-17-24/25-23-53-45-36/37/39-22
RIDADR  UN 1479 5.1/PG 2
WGK Germany  3
RTECS  NN1350000
HazardClass  5.1
PackingGroup  II
HS Code  28299080
NFPA 704
2 1

Potassium iodate price More Price(33)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 1.60335 Potassium iodate solution c(KIO3) = 1/60 mol; standardised against Potassium iodate (CRM), Titripur? 7758-05-6 1003 $59.94 2021-12-16 Buy
Sigma-Aldrich 207977 Potassium iodate reagent grade, ≥98% 7758-05-6 100g $62.8 2021-12-16 Buy
Sigma-Aldrich 1.60335 Potassium iodate solution c(KIO3) = 1/60 mol; standardised against Potassium iodate (CRM), Titripur? 7758-05-6 1000 $64.84 2021-12-16 Buy
Sigma-Aldrich 1.02404 Potassium iodate volumetric standard, secondary reference material for iodometry, traceable to NIST SRM Certipur? 7758-05-6 100 g $100.82 2021-12-16 Buy
Sigma-Aldrich 1.05051 Potassium iodate for analysis EMSURE? ACS,ISO,Reag. Ph Eur 7758-05-6 100 g $105.45 2021-12-16 Buy

Potassium iodate Chemical Properties,Uses,Production

Chemical Properties

white crystals or powder

Physical properties

Colorless crystals or white powder; monoclinic structure; density 3.90 g/cm3; stable at ordinary temperatures; melts at 560°C with partial decompo-sition, releasing oxygen; moderately soluble in cold water; 4.74 g/100mL at 0°C; greater solubility in boiling water 32.3 g/100mL at 100°C; soluble in potassium iodide solution; insoluble in alcohol and liquid ammonia.


Oxidizer used recently to form 2-styrylchromones from o-hydroxy-ω-cinnamylideneacetophenones by oxidative cyclization.1


Oxidizing agent in volumetric chemical analysis; as maturing agent and dough conditioner.


Potassium Iodate is a source of iodine made by reacting iodine with potassium hydroxide. it is a crystalline powder which is more stable than iodide. it has a solubility of 1 g in 15 ml of water. it is used as a fast-acting dough improver; it is used with potassium bromate as an oxidizing agent to modify the protein in bread flour which pro- motes loaf volume and shape. it is used in baked goods.


A white solid formed either by adding iodine to a hot concentrated solution of potassium hydroxide or by the electrolysis of potassium iodide solution. No hydrates are known. It is a source of iodide and iodic acid. When treated with a dilute acid and a reducing agent, the iodate ions are reduced to iodine.


potassium iodate: A white crystallinesolid, KIO3, soluble in waterand insoluble in ethanol; monoclinic;r.d. 3.9; m.p. 560°C. It may be preparedby the reaction of iodine withhot concentrated potassium hydroxideor by careful electrolysis ofpotassium iodide solution. It is anoxidizing agent and is used as ananalytical reagent. Some potassiumiodate is used as a food additive.


Potassium iodate is a fairly strong oxidizing agent that may be used in the assay of a number of pharmaceutical substances, for instance : benzalkonium chloride, cetrimide, hydralazine hydrochloride, potassium iodide, phenylhydrazine hydrochloride, semicarbazide hydrochloride and the like. Under appropriate experimental parameters the iodate reacts quantitatively with both iodides and iodine. It is, however, interesting to observe here that the iodate titrations may be carried out effectively in the presence of saturated organic acids, alcohol and a host of other organic substances.
The oxidation-reduction methods with potassium iodate invariably based on the formation of iodine monochloride (ICl) in a medium of strong hydrochloric acid solution.


Potassium iodate can be produced by fusing potassium iodide with potassium chlorate, bromate or perchlorate:
KI + KClO3→KIO3+ KCl
The melt is extracted with water and potassium iodate is isolated from solution by crystallization.

Production Methods

Potassium iodate is formed (1) by electrolysis of potassium iodide under proper conditions, (2) by reaction of iodine and potassium hydroxide solution, and the fractional crystallization of iodate from iodide. Used as a source of iodate and iodic acid.

General Description

KIO3 can be used as a substitute of KI in radiation protection. A kinetic study of thermal degradation of KIO3 by γ-rays suggests that rate of decomposition increases while activation energy decreases upon irradiation.

Food additive

Iodine can be added to salt in the form of potassium iodide (KI) or potassium iodate (KIO3). Because KIO3 has higher stability in the presence of salt impurities, humidity, and porous packaging, it is the recommended form.
Potassium iodate, which is formed as a secondary product, is reduced by activated carbon. The product is purified by crystallization from water. Alternatively, iron (II) iodide, prepared by using iron powder and iodine, can be treated with potassium carbonate to obtain potassium iodide. High-purity potassium iodide can be prepared by the reaction of a potassium bicarbonate with hydriodic acid.

Safety Profile

Poison by ingestion and intraperitoneal routes. A trace mineral added to animal feeds. Potentially explosive reaction with charcoal + ozone, metals (e.g., powdered aluminum, copper), arsenic carbon, phosphorus, sulfur, alkali metal hydrides, alkaline earth metal hydrides, antimony sulfide, arsenic sulfide, copper sulfide, tin sulfide, metal cyanides, metal thiocyanates, manganese dioxide, phosphorus. Violent reaction with organic matter. When heated to decomposition it emits very toxic fumes of I and K2O. See also IODATES.


Overdose of potassium iodate, an iodized salt used for iodine supplementation in areas endemic for goiter, has been shown to cause profound visual loss and extensive retinal pigmentary abnormalities.78 FA reveals RPE window defects and ERG and VEP testing show marked impairment of retinal function. Visual acuity may improve slowly over several months.

Purification Methods

It has been crystallised twice from distilled water (3mL/g) between 100o and 0o, dried for 2hours at 140o and cooled in a desiccator. Analytical reagent grade material dried in this way is suitable for use as an analytical standard.

Potassium iodate Preparation Products And Raw materials

Raw materials

Preparation Products

Potassium iodate Suppliers

Global( 360)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 China 22607 55
Shanghai Time Chemicals CO., Ltd.
+8618017249410 +86-021-57951555
+86-021-57951555 China 1807 55
Anhui Royal Chemical Co., Ltd.
+86-025-86655873 CHINA 536 55
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418697 China 3000 55
career henan chemical co
+86-0371-55982848 China 29954 58
Hubei Jusheng Technology Co.,Ltd.
027-59599243 CHINA 28229 58
Hebei Guanlang Biotechnology Co., Ltd.
+8619930503282 China 5941 58
Xiamen AmoyChem Co., Ltd
+86 592-605 1114 CHINA 6369 58
Hubei xin bonus chemical co. LTD
027-59338440 CHINA 23035 58
Shandong chuangyingchemical Co., Ltd.
18853181302 CHINA 5917 58

View Lastest Price from Potassium iodate manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2022-01-14 Manganese carbonate
US $10.00 / Kg/Drum 1KG 99% 5000tons per month Wuhan Mulei New Material Technology Co. Ltd
2021-12-01 Potassium iodate
US $10.00 / KG 10g 99.9% 10000kg Hebei Crovell Biotech Co Ltd
2021-11-02 Potassium iodate
US $746.10-26984.10 / KG 25KG 99% 20000KG Baoji Guokang Healthchem co.,ltd

Potassium iodate Spectrum

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