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| | Iodine monochloride Basic information |
| Product Name: | Iodine monochloride | | Synonyms: | IodineMonochlorideForSynthesis(5X25Grams);Iodinemonochloride,97%;Iodinechloride,ACS;Iodine monochloride, ACS;Iodine monochloride solution (Wijs' chloride);Chloroiodide solution, Iodine according to Wijs for the iodine value determination, Iodine monochloride solution, Wijs solution;Chloroiodide solution, Wijs solution;Iodine Monochloride, Reagent | | CAS: | 7790-99-0 | | MF: | ClI | | MW: | 162.36 | | EINECS: | 232-236-7 | | Product Categories: | Inorganics;bc0001 | | Mol File: | 7790-99-0.mol |  |
| | Iodine monochloride Chemical Properties |
| Melting point | 25-27°C | | Boiling point | 97.4 °C (lit.) | | density | 3.24 g/mL at 25 °C (lit.) | | vapor density | 5.5 (vs air) | | Fp | 96-98°C | | storage temp. | 2-8°C | | solubility | acetic acid: soluble(lit.) | | form | Liquid | | color | Red-brown | | PH | <1 (H2O, 20°C) | | Water Solubility | decomposes | | Sensitive | Moisture Sensitive | | Merck | 14,5017 | | BRN | 3902972 | | Exposure limits | ACGIH: TWA 50 ppm
OSHA: TWA 25 ppm; STEL 125 ppm
NIOSH: IDLH 2300 ppm | | Stability: | Stable. Incompatible with organic materials, strong bases, metals. Air, light and moisture sensitive. | | CAS DataBase Reference | 7790-99-0(CAS DataBase Reference) | | NIST Chemistry Reference | Iodine monochloride(7790-99-0) | | EPA Substance Registry System | Iodine chloride (ICl) (7790-99-0) |
| | Iodine monochloride Usage And Synthesis |
| Chemical Properties | dark red or brown solid and/or liquid | | Physical properties | Colorless gas; mold-like pungent odor; melting point 6.45°C; sublimes at4.77°C; supercools to a colorless liquid that boils at 4.5°C; liquid density2.8g/mL at 6°C; soluble in water. | | Uses | Iodine monochloride is used to estimate theiodine values of fats and oils and as a topicalanti-infective (Merck 1996). | | Uses | For determination of iodine absorption number of fatsIodine monochloride is used as a catalyst in organic synthesis. It is the source of electrophilic iodine in the synthesis of certain aromatic iodides. It is used to determine the iodine value of a substance. | | Uses | In Wijs' solution (iodine monochloride in glacial acetic acid), used to determine iodine values of fats and oils. | | 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 | | General Description | Black crystals or a reddish brown oily liquid with a pungent odor. Melting point 27°C (alpha form) or 14°C (beta form). Corrosive to metals and tissue. | | 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)]. | | Hazard | Toxic by ingestion and inhalation, strong
irritant to eyes and skin. | | 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.] |
| | Iodine monochloride Preparation Products And Raw materials |
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