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        Potassium iodide

        Chemical properties Uses Medical Uses Adverse reactions Feed additives Radiation effects Solubility in water Preparation Identification test Toxicity
        Potassium iodide
        Potassium iodide structure
        CAS No.
        7681-11-0
        Chemical Name:
        Potassium iodide
        Synonyms
        I2;KI;K1-N;Pima;LUGOL;IODUM;Jodid;Kisol;IODIDE;Potide
        CBNumber:
        CB3125298
        Molecular Formula:
        KI
        Formula Weight:
        166
        MOL File:
        7681-11-0.mol

        Potassium iodide Properties

        Melting point:
        113 °C(lit.)
        Boiling point:
        184 °C(lit.)
        Density 
        1.32 g/mL at 25 °C
        vapor density 
        9 (vs air)
        vapor pressure 
        0.31 mm Hg ( 25 °C)
        refractive index 
        1.677
        Flash point:
        1330°C
        storage temp. 
        Store at RT.
        solubility 
        H2O: 1 M at 20 °C, clear, colorless
        form 
        particles (round)
        color 
        Yellow
        Specific Gravity
        3.13
        PH
        6.0-9.0 (25℃, 1M in H2O)
        Water Solubility 
        1.43 kg/L
        Sensitive 
        Hygroscopic
        Merck 
        14,7643
        Stability:
        Stable. Protect from light and moisture. Incompatible with strong reducing agents, strong acids, steel, aluminium, alkali metals, brass, magnesium, zinc, cadmium, copper, tin, nickel and their alloys.
        InChIKey
        NLKNQRATVPKPDG-UHFFFAOYSA-M
        CAS DataBase Reference
        7681-11-0(CAS DataBase Reference)
        NIST Chemistry Reference
        Potassium iodide(7681-11-0)
        EPA Substance Registry System
        Potassium iodide (7681-11-0)
        SAFETY
        • Risk and Safety Statements
        Symbol(GHS) 
        GHS08,GHS07
        Signal word  Danger
        Hazard statements  H315-H319-H372-H302
        Precautionary statements  P305+P351+P338-P314-P301+P312+P330
        Hazard Codes  Xn
        Risk Statements  26
        Safety Statements  22-36/38
        WGK Germany  1
        RTECS  TT2975000
        10
        TSCA  Yes
        HS Code  28276000
        Toxicity Approx LD i.v. in rats: 285 mg/kg (Hildebrandt)
        NFPA 704
        0
        1 0

        Potassium iodide price More Price(82)

        Manufacturer Product number Product description CAS number Packaging Price Updated Buy
        Sigma-Aldrich 03124 Potassium iodide puriss., meets analytical specification of Ph. Eur. BP, USP, 99.0-100.5% (calc. to the dried substance) 7681-11-0 1kg $355 2019-12-02 Buy
        Sigma-Aldrich 03124 Potassium iodide puriss., meets analytical specification of Ph. Eur. BP, USP, 99.0-100.5% (calc. to the dried substance) 7681-11-0 6x1kg $2670 2019-12-02 Buy
        Alfa Aesar 010842 Potassium iodide, Puratronic?, 99.998% (metals basis) 7681-11-0 5g $44 2019-12-02 Buy
        Alfa Aesar 010842 Potassium iodide, Puratronic?, 99.998% (metals basis) 7681-11-0 25g $108 2019-12-02 Buy
        Strem Chemicals 19-3200 Potassium iodide, 99+% (ACS) 7681-11-0 500g $130 2019-12-02 Buy

        Potassium iodide Chemical Properties,Uses,Production

        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.

        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

        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.

        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.

        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.

        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.

        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.

        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.

        Chemical Properties

        White crystals, granules, or powder; strong, bitter, saline taste. Soluble in water, alcohol, acetone, and glyc- erol.

        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.

        Uses

        Potassium Iodide is a source of iodine and a nutrient and dietary supplement. it exists as crystals or powder and has a solubility of 1 g in 0.7 ml of water at 25°c. it is included in table salt for the preven- tion of goiter.

        Uses

        Potassium iodide is a white crystal, granule or powder made by the reaction of iodine with hot potassium hydroxide solution followed by crystallization. It is very soluble in water, alcohol, and acetone. Potassium iodide was first used as the primary halide in Talbot’s calotype process, then in the albumen on glass process followed by the wet collodion process. It was also used as a secondary halide in silver bromide gelatin emulsions.

        Definition

        potassium iodide: A white crystallinesolid, KI, with a strong bittertaste, soluble in water, ethanol, andacetone; cubic; r.d. 3.13; m.p. 681°C;b.p. 1330°C. It may be prepared bythe reaction of iodine with hot potassiumhydroxide solution followed by separation from the iodate (which isalso formed) by fractional crystallization.In solution it has the interestingproperty of dissolving iodine to formthe triiodide ion I3-, which is brown.Potassium iodide is widely used as ananalytical reagent, in photography,and also as an additive to table salt toprevent goitre and other disordersdue to iodine deficiency.

        Definition

        A compound that contains pentavalent iodine, which is usually ionically bound to electropositive atoms.

        brand name

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

        Air & Water Reactions

        Water soluble.

        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].

        Health Hazard

        May irritate eyes or open cuts.

        Clinical Use

        Potassium iodide is used to treat the cutaneous lymphatic form of sporotrichosis, although newer agents are also effective in this disorder and may be better tolerated tolerated. The drug is also used for erythema nodosum and nodular vasculitis.

        Safety Profile

        Poison by intravenous route. Moderately toxic by ingestion and intraperitoneal routes. Human teratogenic effects by ingestion: developmental abnormalities of the endocrine system. Experimental teratogenic and reproductive effects. Mutation data reported. Explosive reaction with charcoal + ozone, trifluoroacetyl hypofluorite, fluorine perchlorate. Violent reaction or ignition on contact with dazonium salts, diisopropyl peroxydicarbonate, bromine pentafluoride, chlorine trifluoride. Incompatible with oxidants, BrF3, FClO, metaltic salts, calomel. When heated to decomposition it emits very toxic fumes of K2O and I-. See also IODIDES.

        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.]

        Potassium iodide Preparation Products And Raw materials

        Raw materials

        Preparation Products


        Potassium iodide Suppliers

        Global( 543)Suppliers
        Supplier Tel Fax Email Country ProdList Advantage
        Nantong Lingang Chemical Co. Ltd. 0513-87839072
        0513-87839669 info@lghg.cn CHINA 1 58
        Jinhai iodine chemical (Qingdao) co. LTD 0532-84688707
        1375873870@qq.com CHINA 1 58
        Chengdu RunZeBenTu Chemical Co., Ltd 028-88469284-
        028-88469284 rzbtsj@163.com; China 9988 56
        Shanghai XiZhi Chemical Co., Ltd. 021-69005855
        021-69005955 xizhichem@163.com China 4252 55
        Shanghai Aladdin Bio-Chem Technology Co.,LTD 021-20337333/400-620-6333
        021-50323701 sale@aladdin-e.com China 24984 65
        Guangzhou Helong Trading Co., Ltd. 020-82296652
        331033673@qq.com China 15 58
        Guangzhou Haoyu International Trade Co., Ltd. 020-89850646-
        020-89850646 278220866@qq.com; China 18 58
        Codow Chemical Co.,Ltd. +86-20-38056109
        +86-20-62619665 sales@howeipharm.com China 18333 55
        Shanghai Boyle Chemical Co., Ltd. Mr Qiu:021-50182298(Demestic market) Miss Xu:021-50180596(Abroad market)
        +86-21-57758967 sales@boylechem.com China 2214 55
        J & K SCIENTIFIC LTD. 010-82848833- ;010-82848833-
        86-10-82849933 jkinfo@jkchemical.com;market6@jkchemical.com China 96505 76

        View Lastest Price from Potassium iodide manufacturers

        Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
        2019-04-02 Potassium iodide Manufacturer; In stock GMP Factory
        7681-11-0
        US $1.00 / KG 1KG High quality manufacturer TOP 3 largest production factory in China Chemwill Asia Co.,Ltd.
        2019-07-05 Potassium iodide
        7681-11-0
        US $10.00 / KG 1KG 99% 10 mt Hebei Guanlang Biotechnology Co., Ltd.
        2019-11-21 Potassium Iodide
        7681-11-0
        US $10.00 / KG 1KG 99% 500MT Hebei Xibaijie Biotechnology Co., Ltd.

        Potassium iodide Spectrum


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