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Калий йодат
- английское имяPotassium iodate
- CAS №7758-05-6
- CBNumberCB5854303
- ФормулаIKO3
- мольный вес214
- EINECS231-831-9
- номер MDLMFCD00011406
- файл Mol7758-05-6.mol
Температура плавления | 560 °C(lit.) |
плотность | 3.93 g/mL at 25 °C(lit.) |
давление пара | 0-0Pa at 25℃ |
температура хранения | Store at +5°C to +30°C. |
растворимость | H2O: 0.1 M at 20 °C, clear, colorless |
пка | 0.047[at 20 ℃] |
форма | Powder/Solid |
цвет | White to off-white |
Запах | at 100.00?%. odorless |
РН | 6 (50g/l, H2O, 20℃) |
Растворимость в воде | Soluble |
Мерк | 14,7642 |
Константа произведения растворимости (Ksp) | pKsp: 3.43 |
Стабильность | 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. |
ИнЧИКей | JLKDVMWYMMLWTI-UHFFFAOYSA-M |
LogP | -1 at 25℃ |
Справочник по базе данных CAS | 7758-05-6(CAS DataBase Reference) |
FDA 21 CFR | 184.1635; 582.80 |
Вещества, добавляемые в пищу (ранее EAFUS) | POTASSIUM IODATE |
Специальный комитет по веществам GRAS | Potassium iodate |
FDA UNII | I139E44NHL |
Система регистрации веществ EPA | Potassium iodate (7758-05-6) |
Коды опасности | O,Xi,Xn,T | |||||||||
Заявления о рисках | 8-36/37/38-22-61-20/21/22 | |||||||||
Заявления о безопасности | 26-37/39-17-24/25-23-53-45-36/37/39-22 | |||||||||
РИДАДР | UN 1479 5.1/PG 2 | |||||||||
WGK Германия | 3 | |||||||||
RTECS | NN1350000 | |||||||||
F | 21 | |||||||||
TSCA | Yes | |||||||||
Класс опасности | 5.1 | |||||||||
Группа упаковки | II | |||||||||
кода HS | 28299080 | |||||||||
Банк данных об опасных веществах | 7758-05-6(Hazardous Substances Data) | |||||||||
NFPA 704: |
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рисовальное письмо(GHS)
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рисовальное письмо(GHS)
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сигнальный язык
опасность
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вредная бумага
H302:Вредно при проглатывании.
H318:При попадании в глаза вызывает необратимые последствия.
H272:Окислитель; может усилить возгорание.
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оператор предупредительных мер
P210:Беречь от тепла, горячих поверхностей, искр, открытого огня и других источников воспламенения. Не курить.
P220:Не допускать соприкосновения с одеждой и другими горючими материалами.
P264:После работы тщательно вымыть кожу.
P280:Использовать перчатки/ средства защиты глаз/ лица.
P301+P312:ПРИ ПРОГЛАТЫВАНИИ: Обратиться за медицинской помощью при плохом самочувствии.
P305+P351+P338:ПРИ ПОПАДАНИИ В ГЛАЗА: Осторожно промыть глаза водой в течение нескольких минут. Снять контактные линзы, если Вы ими пользуетесь и если это легко сделать. Продолжить промывание глаз.
Калий йодат химические свойства, назначение, производство
Описание
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.Химические свойства
white crystals or powderФизические свойства
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.Использование
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.Методы производства
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.Определение
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.Подготовка
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.
прикладной
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.
Общее описание
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.Пищевая добавка
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.
Профиль безопасности
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.Передозировка
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.Методы очистки
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.Калий йодат запасные части и сырье
Калий йодат поставщик
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