Cuprous iodide (Copper(I) iodide)
Copper(I) iodide
CAS: 7681-65-4
Molecular Formula: CuI
Cuprous iodide (Copper(I) iodide) - Names and Identifiers
| Name | Copper(I) iodide |
| Synonyms | CuI Ciras Marshite Hydro-giene Copperiodide3 Ciras Reagent Copperiodide1 Cuprous iodide Copper(I)iodide Copper(I) iodide Copper iodide (CuI) Copperiodideoffwhitepowder Cuprous iodide (Copper(I) iodide) |
| CAS | 7681-65-4 |
| EINECS | 231-674-6 |
| InChI | InChI=1/Cu.HI/h;1H/q+1;/p-1 |
| InChIKey | LSXDOTMGLUJQCM-UHFFFAOYSA-M |
Cuprous iodide (Copper(I) iodide) - Physico-chemical Properties
| Molecular Formula | CuI |
| Molar Mass | 190.45 |
| Density | 5.62 g/mL at 25 °C (lit.) |
| Melting Point | 605 °C (lit.) |
| Boling Point | 1290 °C/1 atm (decomp)(lit.) |
| Flash Point | 1290°C |
| Water Solubility | INSOLUBLE |
| Solubility | Soluble in water (0.08 mg/ml at 20 °C). Insoluble in alcohol, and dilute acids. |
| Vapor Presure | 10 mm Hg ( 656 °C) |
| Appearance | Brown crystal |
| Specific Gravity | 5.62 |
| Color | White to Pale Brown |
| Exposure Limit | ACGIH: TWA 1 mg/m3; TWA 0.01 ppmNIOSH: IDLH 100 mg/m3; TWA 1 mg/m3 |
| Solubility Product Constant(Ksp) | pKsp: 11.9 |
| Merck | 14,2662 |
| Storage Condition | Store below +30°C. |
| Sensitive | Air & Moisture Sensitive |
| Refractive Index | 2.346 |
| MDL | MFCD00010978 |
| Physical and Chemical Properties | Density 5.62 melting point 605°C boiling point 1290°C water-soluble INSOLUBLE |
| Use | Used as organic reaction catalyst, Anode ray tube covering, also used as animal feed additives |
Cuprous iodide (Copper(I) iodide) - Risk and Safety
| Risk Codes | R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S57 - Use appropriate container to avoid environmental contamination. S37/39 - Wear suitable gloves and eye/face protection S29 - Do not empty into drains. |
| UN IDs | UN 3077 9/PG 3 |
| WGK Germany | 3 |
| FLUKA BRAND F CODES | 8 |
| TSCA | Yes |
| HS Code | 28276000 |
| Hazard Class | 9 |
Cuprous iodide (Copper(I) iodide) - Reference Information
| crystal Structure | Cubic, sphaloride Structure - Space Group F(-4)3M |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| cuprous halide | cuprous iodide (CuI), cuprous chloride and cuprous bromide are three kinds of commonly used Cuprous halides, which are white solids, the sensitivity of cuprous iodide is inferior to that of cuprous bromide and cuprous chloride, and iodine is decomposed under the action of strong light. Copper iodide exists in nature. Cuprous chloride and cuprous bromide can be prepared by reacting an acidic solution of the corresponding divalent copper salt with metallic copper. Cuprous iodide can be prepared by adding Cu2 to a solution of potassium iodide. phenylcopper can be prepared by the action of cuprous iodide with phenylmagnesium bromide or phenyllithium in diethyl ether. methyllithium can be reacted with cuprous iodide at -15 °c or methylcopper can be prepared by reacting copper nitrate with tetramethyllead in ethanol at -60 to -40 °c. The Grignard reagent reacts with cuprous halide to produce a hydrocarbyl cuprous halide, which may be cuprous iodide, cuprous bromide, cuprous chloride. |
| Application | CuI is a wide bandgap p-type semiconductor material with a bandgap width of 3.1e V, in the visible range (400nm-760nm) has a very high transmittance, has a very high carrier concentration and hole mobility, and the preparation method is simple, less consumption of consumables, high preparation efficiency, the preparation process is non-toxic and pollution-free, therefore, it has broad application prospects in the field of semiconductor optoelectronic devices. |
| Mercury test for cuprous iodide | Mercury is widely used in various instruments, mirrors, chemical industry and metallurgy; in agriculture, organic mercury such as xilisheng, Xili San and Gu renle Sheng are commonly used as Disinfection agent for seeds and insecticides; In medicine, Mercury preparations and mercuric chloride, calomel and Mercury withdrawal are used as Disinfection fungicides, mercury can also be formulated as a therapeutic agent such as a diuretic. Mercury and compounds are toxic, such as the use of accidental ingestion can cause poisoning. [principle] after sublimation, Mercury reacts with cuprous iodide (CuI) to form red cuprous iodide Mercury complex. 3 μg of mercury can be detected by this method. cuprous iodide Mercury reaction equation: 2Cu2I2 HgHgCu2I4 2Cu [reagent] cuprous iodide Cotton: 5g copper sulfate, 3G anhydrous ferrous sulfate, dissolved in 100mL water, the iodinated solution (7g of potassium iodide dissolved in 50ml of water) was added under stirring, and the resulting cuprous iodide precipitate was separated by centrifugation. After washing with water, it was stirred to form a turbid solution, the absorbent cotton impregnated with this turbid solution is dried in the shade for later use. [operation] The copper piece of the test tube was placed in the test tube, and the nozzle was gently covered with copper iodide cotton. The bottom of the test tube was heated on a straight fire, and the cotton turned red if Mercury was present. At the same time as a blank control. It is also advisable to add 1 drop of the digestive solution of the sample to the copper iodide cotton. If there is Mercury, the cotton will turn red. Reference: Yu Weisen, Gao Ruqin, and Jin Xiaomei. Rapid disposal technology for common chemical food poisoning. |
| Use | 1. Cuprous iodide (CuI) is widely used as a catalyst for organic synthesis, a resin modifier, an artificial rainfall agent, an anode-Ray Tube covering, and a source of iodine in iodized salts. In the presence of 1,2-or 1, 3-diamine ligands, cuprous iodide can catalyze the conversion of brominated aromatic hydrocarbons, brominated heterocyclic compounds and vinyl bromide to the corresponding iodides. The reaction is generally carried out in a dioxane solvent with sodium iodide as the iodination reagent. Aromatic iodides are generally more active than the corresponding chlorides and iodides, and thus, cuprous iodide can catalyze a series of coupling reactions in which halogenated hydrocarbons participate, such as the Heck reaction, the Stille reaction, the Suzuki reaction, and the Ullmann reaction. 2-bromo-1-octen-3-ol with 1-nonyne in the presence of dichlorobis (triphenylphosphine) palladium (II), cuprous chloride and diethylamine, the coupling reaction takes place to produce 7-methylene-8-hexadec-6-ol. 2. Used as an organic reaction catalyst, an Anode ray tube covering, and also used as an animal feed additive, etc., cuprous iodide can also be used together with mercuric iodide as an indicator for measuring the temperature rise of a mechanical bearing. 3. As a catalyst in many reactions in which Grignard reagent is involved, cuprous iodide is also used in dry Wiff rearrangement reactions. Nutrition Fortifier (iodine source). used as analytical reagent used as organic reaction catalyst, Anode ray tube covering, also used as animal feed additive, etc. Used as organic reaction catalyst, Anode ray tube covering, animal feed additive, making temperature indicator with mercuric iodide, Resin modifiers, electronic materials. used as catalyst for organic reaction; Used together with mercuric iodide as indicator |
| toxicity | GRAS(FDA § 184.1265,2000). |
| usage limit | 01%(FDA § 184.1265,2000). |
| production method | is obtained by reacting copper sulfate with potassium iodide under weak acid conditions. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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