Hydriodic acid

Base Information

• Chemical Name: Hydriodic acid
• CAS No.: 10034-85-2
• Deprecated CAS: 39445-43-7,8014-90-2,8052-26-4,2487183-44-6,8014-90-2,8052-26-4
• Molecular Formula: HI
• Molecular Weight: 127.912
• Hs Code.: 28111990
• European Community (EC) Number: 233-109-9
• ICSC Number: 1326
• UN Number: 1787,2197
• UNII: 694C0EFT9Q
• DSSTox Substance ID: DTXSID2044349
• Nikkaji Number: J1.900.581J,J95.185D
• Wikipedia: Hydrogen_iodide,Hydroiodic acid,Hydroiodic_acid
• Wikidata: Q2462,Q83006413
• NCI Thesaurus Code: C1841
• ChEMBL ID: CHEMBL1233550
• Mol file: 10034-85-2.mol

Synonyms:hydriodic acid;hydroiodic acid

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Chemical Property of Hydriodic acid

Chemical Property:

• Appearance/Colour: colorless to yellow brown liquid
• Vapor Pressure: 13.8mmHg at 25°C
• Melting Point: 133-135oC
• Boiling Point: 127 °C
• PKA: -10(at 25℃)
• Flash Point: 126-127 °C
• PSA: 0.00000
• Density: 1.701 g/cm³
• LogP: 0.99820
• Storage Temp.: Refrigerator (+4°C)
• Sensitive.: Hygroscopic
• Water Solubility.: soluble
• XLogP3: 0.9
• Hydrogen Bond Donor Count: 1
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 0
• Exact Mass: 127.91230
• Heavy Atom Count: 1
• Complexity: 0
• Transport DOT Label: Corrosive,Poison Gas Corrosive

Purity/Quality:

Safty Information:

• Pictogram(s): C
• Hazard Codes: C
• Statements: 34-35
• Safety Statements: 26-36/37/39-45-9

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Chemical Classes: Toxic Gases & Vapors -> Acids, Inorganic
• Canonical SMILES: I
• Inhalation Risk: On loss of containment, a harmful concentration of this gas in the air will be reached very quickly.
• Effects of Short Term Exposure: Rapid evaporation of the liquid may cause frostbite. The substance is corrosive to the eyes, skin and respiratory tract. Inhalation may cause severe swelling of the throat. Inhalation may cause lung oedema, but only after initial corrosive effects on eyes and/or airways have become manifest. Medical observation is indicated.
• Production method: Slowly add iodine and red phosphorus to a reactor filled with water, and react under stirring, filter the reaction solution, and distill the filtrate, collect fractions of 125~130 ℃, obtain Hydroiodic. 2P + 5I2 → 2PI5 PI5 + 4H2O → 5HI + H3PO4
• Uses: 1. Used for producing organic iodide. As general reagents and pharmaceutical intermediates. 2. Used as the analysis reagents, also used in the preparation of the iodide. 3. Used as a reducing agent, also used in the synthesis of alkyl iodine and other alkyl iodide. 4. Used for Determination of methoxy, ethoxy and selenium, dissolution of acid-insoluble inorganic substance, such as an alkaline earth metal sulfate and mercury iodide and so on. Used as a reducing agent. Used for the preparation of iodide. 5. Used for Determination of methoxy, dissolution of acid-insoluble (especially hot) inorganic substance, such as an alkaline earth metal sulfate and mercury iodide and so on. Used as a reducing agent. Hydriodic acid is used in the manufactureof iodides, as a reducing agent, and indisinfectants and pharmaceuticals. Hydriodic acid (HI) is a colorless solution formed when hydrogen iodide gas is dissolved in water, commercially of strength 10% HI, frequently colored brown by iodine. There is a maximum constant boiling point 127 °C (774 mm) at 57% HI (distillate) for mixtures of hydriodic acid and water. Hydriodic acid is used in the preparation of iodides, and as an important reagent in organic chemistry. Reducing agent, manufacture of inorganic iodides, pharmaceuticals, disinfectants. The 57% acid is also used for analytical purposes, such as methoxyl determinations.
• Description: ‘Iodine’ is derived from iodes, a Greek word meaning violet. It is a member of the halide family and hydrogen iodide is considered a strong acid.
• Physical properties: This is a strong acid, made by dissolving HI gas in water. However, hydrogen iodide and hydroiodic acid differ in that the former is a gas under standard conditions whereas the other is an aqueous solution of said gas. They are noninterconvertible. That is, once the acid is formed with water, it cannot be recovered like HCl or HBr. Hydroiodic acid is used in organic and inorganic synthesis as one of the primary sources of iodine and as a reducing agent.With moist air, HI gas gives a mist (or fumes) of hydroiodic acid. It is exceptionally soluble in water. One liter of water will dissolve 425 L of HI, the final solution containing only four water molecules per molecule of HI. As stated, although chemically related, hydroiodic acid is not pure HI but a mixture containing it. Commercial “concentrated” hydroiodic acid usually contains 90–98% HI by mass.

Technology Process of Hydriodic acid

There total 318 articles about Hydriodic acid which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

cyanuric iodide (5637-87-6) + water (7732-18-5) → hydrogen iodide (10034-85-2) + isocyanuric acid (108-80-5)

Guidance literature:

at 125 ℃;

Reference yield:

2-chloro-4,6-diiodo-1,3,5-triazine (29633-72-5) + water (7732-18-5) → hydrogenchloride (7647-01-0,15364-23-5) + hydrogen iodide (10034-85-2) + isocyanuric acid (108-80-5)

Guidance literature:

at 125 ℃;

Reference yield:

ethyl iodide (75-03-6) → hydrogen iodide (10034-85-2)

Guidance literature:

at 192 ℃; die thermische Dissoziation beginnt;

upstream raw materials:

cyanuric iodide

water

2-chloro-4,6-diiodo-1,3,5-triazine

ethyl iodide

Downstream raw materials:

1-Methylpyrrolidine

2-n-Butylpyrrolidine

8-azabicyclo[3.2.1]octane

pyridine

Refernces

• 1、 Macauley, R. M.. "-". . p. 552 - 556. Retrieved 1922.
• 2、 Nakamura, K.,Masaki, N.,Okamoto, M.,Sato, S.,Shimokoshi, K.. "Free radicals formed by reaction of germane with hydrogen atoms in xenon matrix at very low temperatures". . p. 4949 - 4951. Retrieved 1987.
• 3、 Hendrixson, W. S.. "". . p. 2013 - 2017. Retrieved 1923.
• 4、 Jones et al. "-". . p. 9,14. Retrieved 1958.
• 5、 Hewett, Kevin B.,Setser. "Generation of NBr(a1Δ) by the reaction of N3 radicals with Br atoms: A flow reactor source for quenching rate constant measurements". . p. 335 - 342. Retrieved 1998.
• 6、 Pickering, S. U.. "". . p. 128 - 140. Retrieved 1880.
• 7、 Giauque, W. F.,Wiebe, R.. "". . p. 1441 - 1449. Retrieved 1929.
• 8、 Swiatkowski, Marcin,Kruszynski, Rafal. "Revealing the structural chemistry of the group 12 halide coordination compounds with 2,2′-bipyridine and 1,10-phenanthroline". . p. 642 - 675. Retrieved 2017.
• 9、 Markaryan,Grigoryan,Sarkisyan,Asatryan,Adamyan. "Complexation and reactions of molecular iodine with dimethyl and diethyl sulfoxides". . p. 1801 - 1803. Retrieved 2006.
• 10、 Fushitani, Mizuho,Shida, Tadamasa,Momose, Takamasa,Raesaenen, Markku. "UV-photolysis of HI···CO2 complexes in solid parahydrogen: Formation of CO and H2O". . p. 3635 - 3641. Retrieved 2000.