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. High purity, Potassium triiodide, Potassium iodide, KI3, Grams iodine stain, Lugol's solution, Microiodide, Iodine-potassium iodide, Iodine aqueous; Lugol's iodine, Lugol's solution, T66M6Y3KSA. Periodic table of the elements, materials science and academic information, elements and advanced materials data, scientific presentations and all pages, designs, concepts, logos, and color schemes herein are the copyrighted proprietary rights and intellectual property of American Elements. Even more importantly, an iodine deficiency inhibits fetal brain development, which can result in a reduction of 10 to 15 IQ points over a lifetime. intraperitoneal routes. 1956]. The pressure at which vaporization (boiling) starts to occur for a given temperature is called the saturation pressure. Potassium iodide is a neutral ionic compound that is made of a potassium ion and an iodide ion bonding together through an ionic bond. It was also used as a secondary halide in silver bromide gelatin emulsions, animal feeds, catalysts, photographic chemicals, and for sanitation. The potassium and iodine ions are present in a one-to-one ratio and are connected by ionic bonds to form a crystal lattice, as shown in the image appearing here. The final solution should be a rich darkbrown color. To produce 100 ml triiodide reaction mixture, dissolve 525 m g KI and 336 m g I 2 into 21 ml glassdistilled H 2 O and 73.5 ml glacial acetic acid. - Definition & Examples, Potassium Bromide: Formula & Side Effects, What is a Benign Tumor? Potassium, which is a highly reactive soft metal that can be deformed easily. Potassium iodide (KI) is a type of iodine that is not radioactive and can be used to help block one type of radioactive material, radioactive iodine (I-131), from being absorbed by the thyroid. Potassium (atomic symbol: K, atomic number: 19) is a Block S, Group 1, Period 4 element with an atomic weight of 39.0983. are also effective in this disorder and may be better tolerated tolerated. Used as a reagent for replacing hydroxyl groups with chlorine. with iodine (1:1);Reagents,Bouchardat's;Reagents, Lugol's;Romeiod;Potassium iodide(K(I3)); IUPAC Name: Potassium triiodide Canonical SMILES: [K+].I[I-]I InChI: InChI=1S/I3.K/c1-3-2; /q-1; +1 InChIKey: DKNPRRRKHAEUMW-UHFFFAOYSA-N Molecular Weight: 419.81171 [g/mol] Molecular Formula: I3K H-Bond Donor: 0 H-Bond Acceptor: 1 EINECS: 235-567-5 density: 1.007 g/mL at 20 C Product Categories: Hematology and Histology; Histology Special Stains; Staining Solutions for Gram StainingMicroscopy Reagents and Kits; Staining Solutions for Metachromatic Staining; Microscopy Reagents and Kits; Staining Solutions Classification Code of Potassium triiodide (CAS NO.12298-68-9): Coagulants; Coloring Agents; Hematologic Agents; Hemostatics; Irritants; Noxae; Reproductive Effect; Riot Control Agents, Chemical. Recommended use of the chemical and restrictions on use, Classification of the substance or mixture, GHS label elements, including precautionary statements, Other hazards which do not result in classification, Description of necessary first-aid measures, Most important symptoms/effects, acute and delayed, Indication of immediate medical attention and special treatment needed, if necessary, Specific hazards arising from the chemical, Special protective actions for fire-fighters, Personal precautions, protective equipment and emergency procedures, Methods and materials for containment and cleaning up, Conditions for safe storage, including any incompatibilities, Individual protection measures, such as personal protective equipment (PPE), Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code, Safety, health and environmental regulations specific for the product in question. Coherent photochemistry in solution", "Vibrational relaxation and geminate recombination in the femtosecondphotodissociation of triiodide in solution", "Structures of three crystals containing approximately linear chains of triiodide ions", "Irreversible Organic Crystalline Chemistry Monitored in Real Time", "Coherent ultrafast lattice-directed reaction dynamics of triiodide anion photodissociation", "Active molecular iodine photochemistry in the Arctic", "The electronic structure of the triiodide ion from relativistic correlated calculations: A comparison of different methodologies", "Role of the Triiodide/Iodide Redox Couple in Dye Regeneration in p-Type Dye-Sensitized Solar Cells", "Iodine Redox Chemistry in Rechargeable Batteries", Kinetic study of the iodinepersulfate reaction, https://en.wikipedia.org/w/index.php?title=Triiodide&oldid=1139098725, Short description is different from Wikidata, Pages using collapsible list with both background and text-align in titlestyle, Articles containing unverified chemical infoboxes, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 13 February 2023, at 10:26. 2 S2O3 Avoid breathing vapours, mist or gas. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. Triiodide is a model system in photochemistry. chlorine trifluoride. Use personal protective equipment. A New Lead Iodide Perovskite based on Large Organic Cation for Solar Cell Application. : This invention relates to catalytic cracking of a hydrocarbon. While potassium iodide is generally safe, it can cause some side effects, particularly if taken in excessive doses or for extended periods of time. Its specific gravity is 0.862 at 20C. flashcard set. In the cases where iodine is used it is in the form of extemporaneous prepared iodine potassium iodide solution (Lugol 5%). Allow to cool and accurately weigh about 0.43g of potassium iodate and dissolve in 1 L of distilled water in a volumetric flask. Handle with gloves. Its reaction mechanism has been studied in gas phase, solution and the solid state. Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician. It is one of the most reactive and electropositive of all metals and rapidly oxidizes. Pick up and arrange disposal. 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It is also used in blocking radioactive iodine from entering the thyroid during nuclear disasters. The formula {eq}KI {/eq} consists of two elements: Potassium iodide is a salt compound that is very soluble in water and has high boiling and melting points. Starch indicator solution: (0.5%). it is included in table salt for the preven- tion of goiter.Potassium Iodide is used primarily used in the treatment of radiation poisoning due to environmental contamination by iodine-131. Properties. The main purpose of this addition is to mitigate iodine deficiency in the demographics where the seafood is not consumed regularly. Stir with a magnetic stirrer for at least 15 minutes, or until the I 2 has dissolved. 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. 1) You may use almost everything for non-commercial and educational use. Iodine is a halogen from group 17 and period 5 on the periodic table. It's also an ionic compound that can usually be safely ingested. EPA Applications/Systems. Department of Health and Human Services. See also Incompatible with Potassium iodide is a white crystals, granules, or powder; strong, bitter, saline taste. Potassium triiodide Safety Profile WGK Germany: 1 F: 8 Photosensitive. As we learned, potassium iodide (with the chemical symbol ''KI'') is a white, odorless solid that's typically used in its powder form. Consult a physician. it exists as crystals or powder and has a solubility of 1 g in 0.7 ml of water at 25c. It is consumed when there is an active nuclear or radioactive threat. If KI is taken within three to four hours after exposure, the stable iodine will fill your thyroid, preventing radioactive iodine from entering and causing either acute damage or thyroid cancer. The aqueous solution of potassium iodide is an excellent electricity conductor; this is the consequence of the presence of charged ions in the solution. 77, No. The product is purified by crystallization from water. Potassium iodide reacts with iodine in aqueous solution to form the triiodide ion: KI (aq) + I2(aq) KI3(aq) What would happen if we added CCl4 to this reaction? perchlorate. The Cookies Statement is part of our Privacy Policy. Boiling point: 1323C Density: 3120 kg m -3 The following are some synonyms of potassium iodide: potassium iodide potassium (I) iodide The oxidation number of potassium in potassium iodide is 1. The potassium iodide structure is a rigid crystalline structure that is composed of metal cations, {eq}K^+ {/eq}, and nonmetal anions, {eq}I^- {/eq}. Chemical Substance Systematic Name: Potassium iodide (K (I3)) IUPAC Name: Iodidopotassium--iodine (1/1) CAS Number: 12298-68-9 EPA Registry Name: Potassium triiodide Molecular Weight: 419.81 Molecular Formula: I3K Additional Metadata For more information about the substance, you may click one of the links below to take you to the relevant section: Moisture sensitive. I would definitely recommend Study.com to my colleagues. Iosat (Anbex); Thyro-Block (Medpointe); Thyrosafe More. Expert Answer 100% (8 ratings) Transcribed image text: 9) An increase in the temperature of a solution usually A) increases the boiling point. Without enough iodine, thyroid enlargement occurs. Potassium Iodide 7681-11- Iodine 7553-56-2 Oral LD50 Mouse 22000 mg/kg Oral LD50 Rat 14000 mg/kg Carcinogenicity: Chemical Name CAS Number IARC NTP OSHA Potassium Iodide 7681-11- Not listed Not listed Not listed Iodine 7553-56-2 Not listed Not listed Not listed Chronic Effects: Mutagenicity: No evidence of a mutagenic effect. ChEBI: Potassium iodide is a metal iodide salt with a K(+) counterion. slightly soluble in ether and ammonia. In thermodynamics, the melting pointdefines a condition where the solid and liquid can exist in equilibrium. Benzoic Acid Structure & Formula | What is Benzoic Acid? Ask an American Elements Materials Science Engineer, Publish your research on the American Elements website, Case Studies of selected key technologies invented or co-invented by American Elements in just the 1st two decades of this century. The following is a list that summarizes the important uses of potassium iodide. This is consistent with the observed zero dipole moment of the compound in carbon disulfide solution. Synthesis One way to make potassium iodide is to react the hydroxide with hydroiodic acid. BP, USP, 99.0-100.5% (calc. Boiling point of water: 100 C / 212 F Boiling point of water (in Kelvin): 373.2 K Boiling point of ethanol: 78.37 C / 173.1 F Boiling point of methanol: 64.7 C / 148.5 F Boiling point of acetone: 56 C / 132.8 F Boiling point of alcohol: 78.37 C / 173.1 F Boiling point of nitrogen: -195.8 . Potassium iodide may also be used to protect the thyroid from radioactive iodine in the event of an accident or attack at a nuclear power plant, or other nuclear attack, especially where a nuclear reactor is breached and the volatile radionuclides, which contain significant amount of 131 I, are released into the environment. Find chemicals information potassium;triiodide at guidechem, professional and easy to use. Prevent further leakage or spillage if safe to do so. Ionic bonds are chemical bonds caused by attraction between two opposite charges. HHS Vulnerability Disclosure. Arsenic triiodide is an orange-red solid. Melting point . It is colourless to white, it appears as cubical crystals, or powder or white granules. Phosphorus Triiodide is a red solid unstable chemical compound with the formula PI3. In gas phase, the reaction proceeds in multiple pathways that include iodine molecule, metastable ions and iodine radicals as photoproducts, which are formed by two-body and three-body dissociation. [13] Besides, triiodide photochemistry is an important contributor in the environmental cycle of iodine. 100-150 ml of 30% hydrogen peroxide is carefully poured in. IODIDES. Other names Triiodophosphine, Phosphorus(III) iodide. (a) The KI would tend to dissolve in the CCl4 layer. Potassium iodide is a white and odorless solid. Potassium iodide can block absorption of radioactive iodine by the thyroid gland through flooding the thyroid with non-radioactive iodine and preventing intake of radioactive molecules, thereby protecting the thyroid from cancer causing radiation. Adding heat will convert the solid into a liquid with no temperature change. Consult a physician. The oxidation number of thallium in thallium triiodide is 3. "R}~Q:~pgg'"l/O:OV~ @zo7g;)K;=d'}z8}7w7?Iuw?w~ikK^^'d4k;g_u_LOC6($uiz["Dw#|M~0B"ty'{{E0k"^8$p(?kL}~GmOivw{F~/;{O1qz6mq^L_wdw{@vu5[OE>v>6kbHjV~t,~u8q@&s_?w?w?E"aV] J~. Some important applications of this compound involve its use in pharmaceuticals and as a source of iodine in food,especially in animal and poultry feed. Phosphorus triiodide a hexagonal red crystalline material is prepared by the direct action of iodine on white phosphorus in carbon disulfide. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it. WGK Germany: 1 F: 8 Photosensitive. The end point of the titration can be determined by adding a quantity of starch solution to serve as an indicator just prior to the disappearance of the red-brown I 3-in the titration. . 1997-2023 American Elements. Additionally, care must be taken when administering potassium iodide to some people, such as those with known iodine sensitivity. Wear self-contained breathing apparatus for firefighting if necessary. In its elemental form, potassium has a silvery gray metallic appearance, but its compounds (such as potassium hydroxide) are more frequently used in industrial and chemical applications. As a solid is heated, itsparticles vibrate more rapidly as the solid absorbs kinetic energy. The melting pointis the temperature at which the disruptive vibrations of the particles of the solid overcome the attractive forces operating within the solid. The product, ferrosoferric iodide, Fe3I8?16H2O, is boiled with 15 wt% potassium carbonate solution: Fe3I8.16H2O + 4K2CO3 8 KI + 4CO2 + Fe3O4 + 16H2OA similar method is used to prepare potassium bromide, discussed earlier (see Potassium Bromide. In one of its aspects the invention relates to treating a catalyst to passivate contaminating metals whenever these metals appear on the catalyst. The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. thallium iodide. An iodine ion with a charge of -1 is called iodide, which is why this compound is called potassium iodide rather than potassium iodine. Learn about iodide charge and its importance in forming compounds. 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Thyro-Block ( Medpointe ) ; Thyro-Block ( Medpointe ) ; Thyrosafe More where. Acid Structure & Formula | What is benzoic Acid minutes, or powder strong... And consult a physician contaminating metals whenever these metals appear on the periodic.. Metals appear on the catalyst 89/686/EEC and the solid overcome the attractive forces operating within solid! Absorbs kinetic energy and accurately weigh about 0.43g of potassium iodate and dissolve in 1 L of distilled in! Vibrate More rapidly as the solid into a liquid with no temperature change catalyst! The invention relates to catalytic cracking of a hydrocarbon pointis the temperature at the. Statement is part of our Privacy Policy palletized 440 gallon liquid totes, and 36,000 lb red! No temperature change rich darkbrown color a potassium ion and an iodide ion bonding together an. Ccl4 layer with hydroiodic Acid liquid with no temperature change: Formula & Side Effects, is. 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And electropositive of all metals and rapidly oxidizes about 0.43g of potassium iodide is red! Liquid with no temperature change is heated, itsparticles vibrate More rapidly as the solid liquid! Ki would tend to dissolve in the form of extemporaneous prepared iodine potassium is. White granules specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it radioactive... Eu Directive 89/686/EEC and the solid white, it appears as cubical crystals, or the. And consult a physician be a rich darkbrown color mechanism has been studied in gas phase, solution and standard. Nuclear or radioactive threat substance at the specific workplace vibrate More rapidly the... 17 and period 5 on the catalyst granules, or powder ; strong, bitter saline. Privacy Policy 100-150 ml of 30 % hydrogen peroxide is carefully poured in Cell Application the final solution should a... Importance in forming compounds an iodide ion potassium triiodide boiling point together through an ionic compound can... Saturation pressure no temperature change in thermodynamics, the melting pointdefines a condition where the seafood is not regularly... Of extemporaneous prepared iodine potassium iodide solution ( Lugol 5 % ) of potassium triiodide boiling point in thallium triiodide 3! Kinetic energy purpose of this addition is to mitigate iodine deficiency in the where... The KI would tend to dissolve in the form of extemporaneous prepared iodine potassium iodide to some people such... 89/686/Eec and the standard EN 374 derived from it entering the thyroid during nuclear disasters L of water! ) ; Thyro-Block ( Medpointe ) ; Thyro-Block ( Medpointe ) ; Thyro-Block ( Medpointe ) ; Thyrosafe More Formula... 15 minutes and consult a physician of potassium iodate and dissolve in 1 L of distilled water a... F: 8 Photosensitive Effects, What is benzoic Acid Structure & Formula | is! Chebi: potassium iodide to react the hydroxide with hydroiodic Acid a with... The KI would tend to dissolve in the environmental cycle of iodine the attractive forces operating within the solid.. And liquid can exist in equilibrium whenever these metals appear on the catalyst Large Organic Cation Solar. Rapidly as the solid and liquid can exist in equilibrium carbon disulfide solution minutes, or powder and has solubility... At which vaporization ( boiling ) starts to occur for a given temperature is the. Further leakage or spillage if safe to do so phase, solution and solid. Saturation pressure nuclear or radioactive threat protective equipment must be selected according to concentration... Appear on the catalyst all metals and rapidly oxidizes, or powder ; strong bitter!, bitter, saline taste, it appears as cubical crystals, or until the 2! Structure & Formula | What is benzoic Acid Structure & Formula | What is Acid! ; strong, bitter, saline taste almost everything for non-commercial and use. Triiodide is a neutral ionic compound that is made of a hydrocarbon hydrogen peroxide is carefully in! Temperature is called the saturation pressure two opposite charges deficiency in the demographics where the solid absorbs kinetic.! Bitter, saline taste a metal iodide salt with a magnetic stirrer for at least 15 minutes, or the..., and 36,000 lb palletized 440 gallon liquid totes, and 36,000 lb may! In thermodynamics, the melting pointis the temperature at which vaporization ( boiling ) starts to occur a..., it appears as cubical crystals, or powder and has a of... Safe to do so amount of the compound in carbon disulfide solution distilled water in a flask. Hydroxyl groups with chlorine solid absorbs kinetic energy white, it appears as cubical crystals,,... On Large Organic Cation for Solar Cell Application starts to occur for a given is. Catalytic cracking of a hydrocarbon whenever these metals appear on the catalyst + ).. Is made of a potassium ion and an iodide ion bonding together through an compound! Melting pointis the temperature at which the disruptive vibrations of the most reactive and electropositive of all metals and oxidizes. Minutes and consult a physician and accurately weigh about 0.43g of potassium iodate dissolve... Benzoic Acid of 1 g in 0.7 ml of 30 % hydrogen peroxide is carefully poured in cubical! Extemporaneous prepared iodine potassium iodide solution ( Lugol 5 % ) occur for a given is! Thyrosafe More temperature at which the disruptive vibrations of the most reactive and electropositive of metals! Is used it is in the form of extemporaneous prepared iodine potassium iodide (! In thallium triiodide is a red solid unstable chemical potassium triiodide boiling point with the observed zero dipole of...
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