요오드산 칼륨

요오드산 칼륨 속성

요오드산 칼륨 MSDS

Iodic acid potassium salt

요오드산 칼륨 C화학적 특성, 용도, 생산

순도시험

  (1) 유리산 및 유리알칼리 : 이 품목 5g을 취하여 새로 끓여서 식힌 물 40mL에 녹인 다음 페놀프탈레인시액 3방울을 가하여 다음의 시험을 행한다.

     ① 액이 무색이면, 0.01N 수산화나트륨용액 1.2mL를 가할 때, 홍색을 나타내어야 한다.

     ② 액이 홍색이면, 그 색은 0.01N 염산 0.4mL를 가할 때, 없어져야 한다.

  (2) 납 :「메타인산나트륨」의 순도시험 (2)에 따라 시험한다(2.0ppm 이하).

확인시험

  (1) 이 품목은 물에는 녹으나, 에탄올에는 녹지 않는다.

  (2) 이 품목은 확인시험법 중 칼륨염의 반응을 나타낸다.

  (3) 이 품목의 수용액(1→20)에 전분시액 1방울 및 20%차아인산용액 몇 방울을 가하면 일시적으로 청색을 나타낸다.

정량법

  이 품목을 105℃에서 3시간 건조한 다음 0.1g을 정밀히 달아 삼각플라스크에 넣고 물 50mL를 가하여 녹여서 요오드칼륨 3g, 묽은염산 3mL를 가하여 밀전하고 5분간 방치한 다음 차가운 물 100mL를 가하여 유리한 요오드를 0.1N 치오황산나트륨용액으로 적정한다(지시약 : 전분시액). 따로 같은 방법으로 공시험을 한다.

0.1N 치오황산나트륨용액 1mL = 3.567mg KIO₃

개요

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.

화학적 성질

white crystals or powder

물리적 성질

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.

용도

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.

정의

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.

제조 방법

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.

주요 응용

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.

생산 방법

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.

일반 설명

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.

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.

요오드산 칼륨 준비 용품 및 원자재

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요오드산 칼륨 공급 업체

공급자	전화	이메일	국가	제품 수	이점
Hebei Guanlang Biotechnology Co,.LTD	+8619930503252	daisy@crovellbio.com	China	5964	58
Hebei Xinsheng New Material Technology Co., LTD.	+86-16632316109	xinshengkeji@xsmaterial.com	China	1100	58
Nanjing Deda New Material Technology Co., Ltd	+8613223293093	bella@njdeda.com	China	81	58
Firsky International Trade (Wuhan) Co., Ltd	+8615387054039	admin@firsky-cn.com	China	436	58
Wuhan Quanjinci New Material Co.,Ltd.	+8615271838296	kyra@quanjinci.com	China	1532	58
Capot Chemical Co.,Ltd.	571-85586718 +8613336195806	sales@capotchem.com	China	29797	60
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21691	55
Shanghai Time Chemicals CO., Ltd.	+86-021-57951555 +8617317452075	jack.li@time-chemicals.com	China	1807	55
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418679 +86-18949832763	info@tnjchem.com	China	2989	55
career henan chemical co	+86-0371-86658258	sales@coreychem.com	China	29914	58

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