요오드산 칼륨
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요오드산 칼륨 속성
- 녹는점
- 560 °C(lit.)
- 밀도
- 3.93 g/mL at 25 °C(lit.)
- 증기압
- 0-0Pa at 25℃
- 저장 조건
- Store at +5°C to +30°C.
- 용해도
- H2O: 0.1 M at 20 °C, 투명, 무색
- 산도 계수 (pKa)
- 0.047[at 20 ℃]
- 물리적 상태
- 분말/고체
- 색상
- 흰색에서 황백색까지
- 냄새
- 100.00%. 냄새 없는
- 수소이온지수(pH)
- 6 (50g/l, H2O, 20℃)
- 수용성
- 녹는
- Merck
- 14,7642
- Solubility Product Constant (Ksp)
- pKsp: 3.43
- 안정성
- 안정적인. 피해야 할 물질에는 유기물, 가연성 물질, 인, 황, 탄소, 금속 분말, 시안화물, 수소화물, 강력한 환원제, 알루미늄, 과산화물이 포함됩니다. 가연성 물질과 혼합되면 폭발성이 있습니다.
- InChIKey
- JLKDVMWYMMLWTI-UHFFFAOYSA-M
- LogP
- -1 at 25℃
- CAS 데이터베이스
- 7758-05-6(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
위험품 표기 | O,Xi,Xn,T | ||
---|---|---|---|
위험 카페고리 넘버 | 8-36/37/38-22-61-20/21/22 | ||
안전지침서 | 26-37/39-17-24/25-23-53-45-36/37/39-22 | ||
유엔번호(UN No.) | UN 1479 5.1/PG 2 | ||
WGK 독일 | 3 | ||
RTECS 번호 | NN1350000 | ||
F 고인화성물질 | 21 | ||
TSCA | Yes | ||
위험 등급 | 5.1 | ||
포장분류 | II | ||
HS 번호 | 28299080 | ||
유해 물질 데이터 | 7758-05-6(Hazardous Substances Data) | ||
기존화학 물질 | KE-29148 |
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 powder물리적 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
원자재
준비 용품
요오드산 칼륨 공급 업체
글로벌( 477)공급 업체
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Hebei Xinsheng New Material Technology Co., LTD. | +86-16632316109 |
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Capot Chemical Co.,Ltd. | 571-85586718 +8613336195806 |
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Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 |
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Shanghai Time Chemicals CO., Ltd. | +86-021-57951555 +8617317452075 |
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Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418679 +86-18949832763 |
info@tnjchem.com | China | 2989 | 55 |
career henan chemical co | +86-0371-86658258 +8613203830695 |
sales@coreychem.com | China | 29894 | 58 |