Potassium iodate CAS 7758-05-6
Introduction：Basic information about Potassium iodate CAS 7758-05-6, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
Potassium iodate Basic information
| Product Name: | Potassium iodate |
| Synonyms: | POTASSIUM IODATE VOLUMETRIC STANDARD, SE;POTASSIUM IODATE FOR ANALYSIS EMSURE;PotassiuM iodate, ACS reagent;PotassiuM iodate, 1/60 M solution in H2O;PotassiuM iodate 99.995% trace Metals basis;Potassium iodate ACS reagent, 99.5%;Potassium iodate puriss. p.a., 99.7-100.4%;Potassium iodate reagent grade, >=98% |
| CAS: | 7758-05-6 |
| MF: | IKO3 |
| MW: | 214 |
| EINECS: | 231-831-9 |
| Product Categories: | Pyridines;oxidant analytical reagent;N - RSynthetic Reagents;Salt Solutions;Titration;Volumetric Solutions;ACS GradeSynthetic Reagents;Essential Chemicals;Inorganic Salts;Potassium;Routine Reagents;Reference Material Sodium thiosulfateTitration;By Reference Material;Concentrates (e.g. FIXANAL);Salt Concentrates;Materials Science;Metal and Ceramic Science;Potassium Salts;Reagent Grade;O-P, Puriss p.a. ACS;Puriss p.a. ACS;Synthetic Reagents;Analytical Reagents for General Use;O-P, Puriss p.a.;Puriss p.a.;N - R;PON - PTCertified Reference Materials (CRMs);Titrimetry;Titrimetry CRMs;TitrimetryAnalytical Standards;Alphabetic;Application CRMs;P;Metal and Ceramic Science;Potassium Salts;Salts;Halogenated SolutionsVolumetric Solutions;Inorganics;7758-05-6 |
| Mol File: | 7758-05-6.mol |
Potassium iodate Chemical Properties
| Melting point | 560 °C(lit.) |
| bulk density | 2000kg/m3 |
| density | 3.93 g/mL at 25 °C(lit.) |
| vapor pressure | 0-0Pa at 25℃ |
| storage temp. | Store at +5°C to +30°C. |
| solubility | H2O: 0.1 M at 20 °C, clear, colorless |
| form | Powder/Solid |
| pka | 0.047[at 20 ℃] |
| color | White to off-white |
| Odor | at 100.00?%. odorless |
| PH | 6 (50g/l, H2O, 20℃) |
| Water Solubility | Soluble |
| Merck | 14,7642 |
| Solubility Product Constant (Ksp) | pKsp: 3.43 |
| Stability: | 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. |
| InChI | 1S/HIO3.K/c2-1(3)4;/h(H,2,3,4);/q;+1/p-1 |
| InChIKey | JLKDVMWYMMLWTI-UHFFFAOYSA-M |
| SMILES | [K+].[O-]I(=O)=O |
| LogP | -1 at 25℃ |
| CAS DataBase Reference | 7758-05-6(CAS DataBase Reference) |
| EPA Substance Registry System | Potassium iodate (7758-05-6) |
Safety Information
| 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 |
| F | 21 |
| TSCA | TSCA listed |
| HazardClass | 5.1 |
| PackingGroup | II |
| HS Code | 28299080 |
| Storage Class | 5.1B - Oxidizing hazardous materials |
| Hazard Classifications | Acute Tox. 4 Oral Eye Irrit. 2 Ox. Sol. 2 |
| Hazardous Substances Data | 7758-05-6(Hazardous Substances Data) |
| Description | Potassium iodate is an iodine-rich salt with the formula KIO3. In hot and humid climates, iodine vapor is hydrolyzed due to the hygroscopicity of potassium iodide. Compared to potassium iodide, potassium iodate is more stable and has a longer shelf life. It is a potent blocker of radioactive iodine uptake by the thyroid gland. |
| Chemical Properties | Colorless monoclinic crystal or white crystalline powder. Odorless. Soluble in water, dilute acid, ethylenediamine, ethanolamine, and potassium iodide aqueous solutions; slightly soluble in liquid sulfur dioxide; insoluble in alcohols and ammonia. |
| 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. |
| Uses | 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. |
| Uses | Oxidizer used recently to form 2-styrylchromones from o-hydroxy-ω-cinnamylideneacetophenones by oxidative cyclization.1 |
| Uses | Oxidizing agent in volumetric chemical analysis; as maturing agent and dough conditioner. |
| Definition | Awhite solid formed either by adding iodineto a hot concentrated solution of potassiumhydroxide or by the electrolysis ofpotassium iodide solution. No hydrates areknown. It is a source of iodide and iodicacid. When treated with a dilute acid and areducing agent, the iodate ions are reducedto iodine. |
| Definition | 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. |
| Application | 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. |
| Preparation | 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. |
| Flammability and Explosibility | Non flammable |
| reaction suitability | reaction type: Redox Reactions |
| 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 andintraperitoneal routes. A trace mineral addedto animal feeds. Potentially explosivereaction with charcoal + ozone, metals (e.g.,powdered aluminum, copper), arseniccarbon, phosphorus, sulfur, alkali metalhydrides, alkaline earth metal hydrides,antimony sulfide, arsenic sulfide, coppersulfide, tin sulfide, metal cyanides, metalthiocyanates, manganese dioxide,phosphorus. Violent reaction with organicmatter. When heated to decomposition itemits very toxic fumes of I and K2O. Seealso IODATES. |
| Overdosage | 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. |
| Toxics Screening Level | The initial threshold screening level (ITSL) for potassium iodate is 1 μg/m3 based on an annual averaging time. |
Potassium iodate Preparation Products And Raw materials
| Raw materials | Nitric acid-->Potassium hydroxide-->Iodine-->Potassium chlorate-->iodine-->POTASSIUM BIIODATE-->Iodine trichloride-->Potassium periodate |
| Preparation Products | Sodium chloride-->Potassium iodide-->Calcium iodate-->potassmm iodate for food |
