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Potassium iodide
Cas No: 7681-11-0
No Data 100 Kilogram No Data Nanjing Chemical Material Corp.(NCMC) Contact Supplier
Top grade Potassium iodide cas no. 7681-11-0IK
Cas No: 7681-11-0
No Data 1 Kilogram 1000 Metric Ton/Week Crovell Biotech (Hebei) Co., Ltd. Contact Supplier
leading manufacturer Potassium iodide
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USD $ 0.5-0.5 / Kilogram 1 Kilogram 1 Metric Ton/Day Chemical Solution Industrial Contact Supplier
Potassium iodide
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Potassium iodide
Cas No: 7681-11-0
USD $ 3.0-3.0 / Kilogram 1 Kilogram 1-100 Metric Ton/Month Hangzhou Dayangchem Co., Ltd. Contact Supplier
Potassium iodide CAS NO.7681-11-0
Cas No: 7681-11-0
USD $ 1.0-3.0 / Kilogram 1 Kilogram 10 Kilogram/Day Hebei yanxi chemical co.,LTD. Contact Supplier
High purity Various Specifications Potassium iodide CAS:7681-11-0
Cas No: 7681-11-0
USD $ 100.0-500.0 / Gram 1 Gram 99999 Gram/Year Hangzhou Dingyan Chem Co., Ltd Contact Supplier
Fresh In Stock:Potassium Iodide with BEST PRICE
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USD $ 1.0-1.0 / Metric Ton 1 Metric Ton 1000 Metric Ton/Day Scale Chemical Corporation Contact Supplier
Potassium iodide/CAS 7681-11-0
Cas No: 7681-11-0
No Data 25 Kilogram 500 Metric Ton/Year Hefei TNJ chemical industry co.,ltd Contact Supplier
Potassium iodide
Cas No: 7681-11-0
USD $ 2.0-3.0 / Kilogram 1 Kilogram 50 Metric Ton/Day EAST CHEMSOURCES LIMITED Contact Supplier

7681-11-0 Usage

Uses

manufacture of photographic emulsions; in animal and poultry feeds to the extent of 10-30 parts per million; in table salt as a source of iodine and in some drinking water; also In animal chemistry. In medicine,potassium iodide is used to regulate the thyroid gland.

Purification Methods

Crystallise it from distilled water (0.5mL/g) by filtering the near-boiling solution and cooling. To minimise oxidation to iodine, the process can be carried out under N2 and the salt is dried under a vacuum over P2O5 at 70-100o. Before drying, the crystals can be washed with EtOH or with acetone followed by pet ether. It has also been recrystallised from water/ethanol. After 2 recrystallisations, ACS/USP grade had Li and Sb at <0.02 and <0.01 ppm respectively. [Lingane & Kolthoff Inorg Synth I 163 1939.]

Adverse reactions

  1. Allergy, not common. It can occur immediately after taking the drug, or an angioedema may occur several hours later. It may happen in the upper limbs, lower extremities, face, lips, tongue, or throat. It may also have erythema, fever, or discomfort.
     
  2. Long-term use may cause oral, throat burning sensation, runny nose, metallic taste, tooth and gum pain, stomach discomfort, severe headache and other symptoms of iodine poisoning; hyperkalemia symptoms such as confusion, arrhythmia, numb and tingling feeling in hands and feet, and weakness of lower limbs may also occur. Stop taking medicine to subside.
     
  3. Gastrointestinal adverse reactions such as diarrhea, nausea, vomiting, and stomach pain may occur, though uncommon.
     
  4. Effects on thyroid function: Excessive iodine can cause hyperthyroidism or hypothyroidism. Recession or inhibition of thyroid function can lead to excessive secretion of TSH and even goiter.
     
  5. Combination with anti-thyroid drugs may cause hypothyroidism and goiter; combination with angiotensin converting enzyme inhibitors or with potassium-sparing diuretics is prone to hyperkalemia, so potassium should be monitored in these cases; combination with lithium salts may cause hypothyroidism and goiter.

Chemical properties

Colorless or white cubic crystals or granules; becomes yellowish when exposed to bright light due to photochemical decomposition liberating traces of free iodine; density 3.13 g/cm3; melts at 681°C; vaporizes at 1,330°C; highly soluble in water, ~140 g/100mL at 20°C; aqueous solution readily dissolves iodine; sparingly soluble in ethanol (about 2 g/100mL at 25°C) and acetone; slightly soluble in ether and ammonia.

Brand name

Iosat (Anbex); Thyro-Block (Medpointe); Thyrosafe (R R Registrations); Thyroshield (Fleming).

Air & Water Reactions

Water soluble.

Medical Uses

Nuclear radiation
Shortly before or after exposure to nuclear radiation, daily intake of 130 mg of potassium iodide (adults) can effectively prevent the absorption of radioactive iodine by the thyroid, thereby reducing the accumulation of radioactive iodine, and reducing impair of radioactive iodine to the thyroid gland and nearby tissues.


Dermatological Diseases
Sporotrichosis: Potassium iodide, used either alone or in combination, has a significant effect in the treatment of spore mycosis.
Hypertrophic scars: Potassium iodide solution can inhibit the hyperplasis of scar tissue, dissipate the granulation tissue, soften the scar, loosen the adhesion, and eliminate chronic inflammation.
Erythema nodosum: Potassium iodide deposits in granuloma that cause mast cells to release heparin, thereby inhibiting the occurrence of delayed allergy.

Ophthalmic Diseases
Cataract
: Potassium iodide is one of the first drugs used to treat cataract. It is effective on lens regeneration and reducing lens epithelium damage in experimental naphthalene cataract.
Blepharitis: Application of 2% potassium iodide in eye skin is effective for styes patients with myosinosis, with a cure rate of 88.4%.
Vitreous opacity: Oral administration of 10% potassium iodide can effectively promote the bleeding in the vitreous body and absorption of exudate thus reducing the opacity of vitreous body.
Chronic bronchitis:10% potassium iodide solution has good efficaty in treating chronic bronchitis.
Lead nephropathy: Potassium iodide protects the renal cells from lead damage by either blocking lead diffusion or binding with lead in the cells as to protect the Na + -k + -atpase.
Hyperplasia of mammary glands: The small dose of potassium iodide can promote the secretion of luteinizing hormone in the anterior pituitary gland and promote the luteinization of the ovarian follicle, thus reducing the estrogen level and restoring the normal function of the ovary.

Others
In the treatment of temporomandibular joint disorders, periarthritis of shoulder, congenital muscular torticollis, cervical spondylosis vertigo, clinical studies have shown that applying potassium iodide can increase sympathetic nerve excitability, promote inflammation absorption, release the conglutination and soften the scar thus helping restore the functions of the nerve.

Solubility in water

Grams which dissolves in per 100 ml of water at different temperatures (℃):
128g/0 ℃; 136g/10 ℃; 144g/20 ℃; 153g/30 ℃; 162g/40 ℃; 168g/50 ℃
176g/60 ℃; 192g/80 ℃; 198g/90 ℃; 206g/100 ℃

Preparation

Potassium iodide is made by absorption of iodine in potassium hydroxide:
POTASSIUM IODIDE 7613I2 + 6KOH → 5KI + KIO3 + 3H2O
Most potassium iodate, KIO3 , is separated from the product mixture by crystallization and filtration. Remaining iodates are removed by evaporation of the solution and other processes, such as carbon reduction or thermal decompostion at 600ºC to iodide:
2KIO3 → 2KI + 3O2
Another method of preparation that does not involve the formation of iodate is by treating iron turnings with iodine solution. The product, ferrosoferric iodide, Fe3I8•16H2O, is boiled with 15 wt% potassium carbonate solution: Fe3I8•16H2O + 4K2CO3 → 8 KI + 4CO2 + Fe3O4 + 16H2O
A similar method is used to prepare potassium bromide, discussed earlier (see Potassium Bromide.)
Potassium iodide can be prepared by reacting hydriodic acid with potassium bicarbonate:
HI + KHCO3 → KI + CO2 + H2O
It is purified by melting in dry hydrogen.
Potassium iodide also may be obtained by various electrolytic processes.

Health Hazard

May irritate eyes or open cuts.

Feed additives

Potassium iodide is ionic compound which iodine ions and silver ions can form yellow precipitate silver iodide (when exposes to light, it can decompose, it can be used to make high-speed photographic film), silver nitrate can be used to verify the presence of iodine ions. Iodine is ingredient of thyroxine, it is closely related to basal metabolism livestock, it participates in almost all the metabolism process, livestock iodine deficiency can cause thyroid hypertrophy, basal metabolic rate dropps, and affects growth and development. Young animals and animal feed of iodine deficiency area need add iodine, iodine requirements of high producing dairy cows, yield hens should increase, the feed also need to add iodine. Iodine of milk and egg increases with dietary iodine. According to reports, periodate eggs can reduce cholesterol levels and good for the health of patients with hypertension. In addition, during the fattening of animals, though not iodine deficiency, in order to make livestock hypothyroidism strong, enhanced anti-stress, maintain the highest production capacity, iodide is also added, potassium iodide as the iodine source is added to feed, it can prevent iodine deficiency disorders, promote growth, increase egg production rate and reproduction rate and improve feed efficiency, the amount of feed is generally a few PPM, because of its instability, iron citrate and calcium stearate (generally 10%) is usually added as protective agent to make it stable.

Uses

Industry Application Role/benefit
Dietary supplement Animal feeds and human diet Iodine fortifier/source of iodine
Medicine Goiter Goiter control agent/source of iodine
Long-term lung problems Expectorant/helps you cough up the mucus so you can breathe more easily
Thyroid protection during nuclear or radiological emergencies Blocks thyroid from absorbing radioactive iodine
Chemical analysis Chromatographic analysis and spot analysis Analytical reagent/easily be reduced to iodine
Chemical manufacture Manufacture of iodine compounds and dyes Raw material
Film photography Preparation of silver iodide (AgI) Raw material/react with silver nitrate to make silver iodide (AgI)
Biomedical research Quenching of fluorescence Fluorescence quenching agent/ iodide ion induces the collisional quenching of fluorescent substances
Organic synthesis Preparation of aryl iodides Iodizating agent
Others Dye sensitised solar cells Component in the electrolyte
Dissolution of iodine and refractory metal iodide Cosolvent

Identification test

10% of the sample liquid potassium test (IT-27) and iodide test (IT-18), it is positive.

Toxicity

GRAS (FDA, §184.1634,2000).
Toxicity 1: See iodine.
Toxicity 2: It is generally recognized as safe (US Food and Drug Administration, 1985). The edible salt is in the amount of 0.01% or less.

Reactivity Profile

Bromine trifluoride rapidly attacks the following salts: barium chloride, cadmium chloride, calcium chloride, cesium chloride, lithium chloride, silver chloride, rubidium chloride, potassium bromide, potassium chloride, Potassium iodide, rhodium tetrabromide, sodium bromide, sodium chloride, and sodium iodide [Mellor 2, Supp. 1:164, 165. 1956].

Radiation effects

Various countries aim at surrounding residents of nuclear power plants to provide or reserves iodine tablets, the main ingredient is potassium iodide, when nuclear power plant occurs disaster and radiation leaks, the surrounding residents should take iodine tablets, iodine can saturate the thyroid gland and reduce absorption of radioactive iodine-131. When suffers the free iodine radiation exposure, within four hours can take effect, but it can not prevent ionizing radiation of iodine-131 exceptant and isotope. Improper use may cause hyperthyroidism symptoms without instructions for most people.
InChI:InChI=1/HI.K/h1H;/q;+1/p-1

7681-11-0 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
Aldrich (651818)  Goldetchant,standard   7681-11-0 651818-500ML 1,085.76CNY Detail
Sigma-Aldrich (60422)  Potassiumiodide  tested according to Ph.Eur. 7681-11-0 60422-250G 2,035.80CNY Detail
Sigma (P8166)  Potassiumiodide  plant cell culture tested 7681-11-0 P8166-100G 661.05CNY Detail
Sigma-Aldrich (P2963)  Potassiumiodide  BioXtra, ≥99.0% 7681-11-0 P2963-500G 4,561.83CNY Detail
Sigma-Aldrich (P2963)  Potassiumiodide  BioXtra, ≥99.0% 7681-11-0 P2963-100G 1,187.55CNY Detail
USP (1548280)  Potassiumiodide  United States Pharmacopeia (USP) Reference Standard 7681-11-0 1548280-1G 4,662.45CNY Detail
Sigma (60399)  Potassiumiodide  BioUltra, ≥99.5% (AT) 7681-11-0 60399-500G-F 4,757.22CNY Detail
Sigma (60399)  Potassiumiodide  BioUltra, ≥99.5% (AT) 7681-11-0 60399-100G-F 1,193.40CNY Detail
Sigma-Aldrich (207969)  Potassiumiodide  ReagentPlus®, 99% 7681-11-0 207969-500G 1,563.12CNY Detail
Sigma-Aldrich (207969)  Potassiumiodide  ReagentPlus®, 99% 7681-11-0 207969-100G 537.03CNY Detail
Aldrich (204102)  Potassiumiodide  ≥99.99% trace metals basis 7681-11-0 204102-250G 10,050.30CNY Detail
Aldrich (204102)  Potassiumiodide  ≥99.99% trace metals basis 7681-11-0 204102-50G 2,522.52CNY Detail

7681-11-0SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name potassium iodide

1.2 Other means of identification

Product number -
Other names Potassium iodide

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Corrosion inhibitors and anti-scaling agents,Processing aids, not otherwise listed
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:7681-11-0 SDS

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