7790-99-0 Usage
Description
Iodine monochloride is a chemical compound with the formula ICl, consisting of one iodine atom and one chlorine atom. It is a halogen molecule that exhibits unique properties and reactivity, making it useful in various applications across different industries.
Uses
Used in Analytical Chemistry:
Iodine monochloride is used as a reagent for estimating the iodine values of fats and oils. This helps in determining the amount of unsaturated bonds present in the lipids, which is crucial for assessing their quality and stability.
Used in Organic Synthesis:
Iodine monochloride serves as a catalyst in organic synthesis, providing a source of electrophilic iodine. This is particularly useful in the synthesis of certain aromatic iodides, where it facilitates the formation of desired products by acting as a reactive intermediate.
Used in Pharmaceutical Industry:
In the pharmaceutical industry, iodine monochloride is used to determine the iodine absorption number of fats. This parameter is essential for evaluating the purity and composition of fats, which are often used as excipients or carriers in drug formulations.
Used in Food Industry:
In the food industry, iodine monochloride is utilized in Wijs' solution, which is a mixture of iodine monochloride in glacial acetic acid. This solution is employed to determine the iodine values of fats and oils, ensuring their quality and suitability for various food applications.
Used as a Topical Anti-Infective:
Iodine monochloride also has applications in the medical field, where it is used as a topical anti-infective agent. Its antimicrobial properties help in preventing infections and promoting wound healing when applied to the skin.
Preparation
Iodine monochloride is prepared by the action of liquid or dry chlorine on astoichiometric quantity of solid iodine. Aqueous solutions of ICl are preparedby passing chlorine gas into a suspension of iodine in moderately stronghydrochloric acid:
5I2 + 4HCl + 3Cl2 → 10ICl + 2H2
Alternatively, iodine monochloride may be made by oxidation of iodine withiodic acid in strong hydrochloric acid solution:
2I2 + HIO3 + 2HCl → 2ICl + 3HIO
Air & Water Reactions
Reacts with air to form iodine pentaoxide (I2O5), which decomposes into iodine (I2) and oxygen (O2) with heat beginning at 275°C and proceeding rapidly at 350°C. Soluble in water; reacts with water or steam to produce toxic and corrosive fumes [Lewis].
Reactivity Profile
Iodine monochloride is moderately explosive when heated [Lewis]. Reacts with rubber and many organic materials. Enflames (after a period of delay) with aluminum foil [Mellor 2:119(1946-1947)]. Reacts dangerously with other active metals. Reacts vigorously with cadmium sulfide, lead sulfide, silver sulfide, and zinc sulfide [Mellor 2, Supp. 1:502(1956)]. Combines very exothermically with phosphorus trichloride [Mellor 2, Supp. 1:502(1956)]. Forms Iodine pentaoxide in air which reacts explosively when warmed with carbon, sulfur, sugar, resin, or powdered combustible elements [Mellor 8: 841(1946-1947)].
Health Hazard
Iodine monochloride is highly corrosive tothe skin. Contact with the skin causes burns and dark patches. Upon contact, washimmediately with 15-20% HCl. Vapors areirritating to the skin, eyes, and mucous mem branes. The compound is moderate to highlytoxic by an oral route. The lethal dose in ratsis 59 mg/kg (NIOSH 1986).
Health Hazard
TOXIC; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance may cause severe injury, burns or death. Reaction with water or moist air will release toxic, corrosive or flammable gases. Reaction with water may generate much heat that will increase the concentration of fumes in the air. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
Fire Hazard
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Vapors may accumulate in confined areas (basement, tanks, hopper/tank cars etc.). Substance will react with water (some violently), releasing corrosive and/or toxic gases and runoff. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated or if contaminated with water.
Purification Methods
Purify it by repeated fractional crystallisation from its melt at low temperatures. The black crystals melt to a red-brown liquid. [Cornog & Karges Inorg Synth I 165 1939.]
Check Digit Verification of cas no
The CAS Registry Mumber 7790-99-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,9 and 0 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 7790-99:
(6*7)+(5*7)+(4*9)+(3*0)+(2*9)+(1*9)=140
140 % 10 = 0
So 7790-99-0 is a valid CAS Registry Number.
InChI:InChI=1/ClI/c1-2
7790-99-0Relevant articles and documents
Hoffmann, S. M. A.,Smith, D. J.,Gonzales Urenna, A.,Grice, R.
, p. 99 - 102 (1984)
Swift, E. H.
, p. 894 - 894 (1930)
Cornog, J.,Karges, R. A.
, p. 1882 - 1882 (1932)
Method for preparing hexafluorobutadiene from iodine and chlorine
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Paragraph 0034-0035; 0045-0046; 0056-0057, (2017/08/27)
The invention relates to a method for preparing hexafluorobutadiene from iodine and chlorine. The method comprises the following steps: preparing a metal coordinated ionic liquid solvent, and reacting iodine with chlorine to prepare iodine monochloride; reacting iodine monochloride with chlorotrifluoroethylene in the presence of the metal coordinated ionic liquid solvent to prepare 1,2-dichloro-2-iodo-1,1,2-trifluoroethane; carrying out a reaction on the 1,2-dichloro-2-iodo-1,1,2-trifluoroethane in the presence of the metal coordinated ionic liquid solvent under the catalysis of zinc powder to obtain 1,2,3,4-tetrachloro-1,1,2,3,4,4-hexafluorobutane; and reacting the 1,2,3,4-tetrachloro-1,1,2,3,4,4-hexafluorobutane with zinc powder in the presence of the metal coordinated ionic liquid solvent to generate hexafluorobutadiene.
Stabilizing aqueous solution of iodine chloride by adding sodium chloride
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Page/Page column 3, (2011/02/19)
This invention relates generally to non-ionic X-ray contrast agents. It further relates to the preparation of iodine chloride, a key reagent in the synthesis of non-ionic X-ray contrast agents such as iodixanol and iohexol. In particular, the iodine chloride is produced in a reaction involving iodine, sodium chlorate, and hydrochloric acid as the starting materials. The instant invention relates to a method of stabilizing aqueous iodine chloride solutions by adding about one to about four molar equivalents of sodium chloride relative to sodium chlorate to an aqueous reaction mixture of sodium chlorate, hydrochloric acid, and iodine.