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Encyclopedia > Copper(I) iodide
Copper(I) iodide
General
Systematic name Copper(I) iodide
Other names Cuprous iodide
Molecular formula CuI
Molar mass 190.45 g/mol
Appearance Off white powder
CAS number [7681-65-4]
Properties
Density and phase 5.62 g/cm3, solid
Solubility in water Insoluble
Melting point 605 °C (878 K)
Boiling point 1290 °C (1573 K)
Structure
Coordination
geometry
Linear
Crystal structure Cubic close packed
Dipole moment  ? D
Hazards
MSDS External MSDS
Main hazards  ?
NFPA 704 Health Flammability Reactivity
Flash point  ? °C
R/S statement R: 36/37/38
S: 24/25
RTECS number  ?
Supplementary data page
Structure and
properties
n, εr, etc.
Thermodynamic
data
Phase behaviour
Solid, liquid, gas
Spectral data UV, IR, NMR, MS
Related compounds
Other anions Copper(I) chloride
Copper(I) hydroxide
Other cations Copper(II) iodide
Sodium iodide
Related catalysts  ?
Related compounds Nylon
Except where noted otherwise, data are given for
materials in their standard state (at 25 °C, 100 kPa)
Infobox disclaimer and references

The chemical compound copper(I) iodide has the formula CuI, more commonly known as cuprous iodide. Copper(I) iodide, an off white powder, is found in nature as mineral marshite, a redish brown crystal.1 Image File history File linksMetadata Copper(I)_iodide. ... IUPAC nomenclature is a system of naming chemical compounds and of describing the science of chemistry in general. ... A chemical formula (also called molecular formula) is a concise way of expressing information about the atoms that constitute a particular chemical compound. ... Molar mass is the mass of one mole of a chemical element or chemical compound. ... CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences, mixtures and alloys. ... Density (symbol: ρ - Greek: rho) is a measure of mass per unit of volume. ... In the physical sciences, a phase is a set of states of a macroscopic physical system that have relatively uniform chemical composition and physical properties (i. ... It has been suggested that this article or section be merged with Solution. ... Water has the chemical formula H2O, meaning that one molecule of water is composed of two hydrogen atoms and one oxygen atom. ... The melting point of a solid is the temperature at which it changes state from solid to liquid. ... The boiling point of a substance is the temperature at which it can change its state from a liquid to a gas throughout the bulk of the liquid at a given pressure. ... The coordination geometry of an atom is the geometrical pattern formed by its neighbors in a molecule or a crystal. ... Rose des Sables (Sand Rose), formed of gypsum crystals In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms in a crystal. ... The Earths magnetic field, which is approximately a dipole. ... The debye (symbol: D) is a non-SI and non-CGS unit of electrical dipole moment. ... A material safety data sheet or MSDS is a form containing data regarding the properties of a particular substance. ... Worker safety and health is the prevention and reduction of the number of occupational safety and health hazards at the places of employment, providing safe and healthful working conditions. ... NFPA 704 is a standard maintained by the U.S. National Fire Protection Association. ... Image File history File links File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Image File history File links File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Image File history File links File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... The flash point of a fuel is the lowest temperature at which it can form an ignitable mix with air. ... Risk and Safety Statements, also known as R/S statements, R/S numbers, R/S phrases, and R/S sentences, is a system of hazard codes and phrases for labeling dangerous chemicals and compounds. ... R-phrases are defined in Annex III of European Union Directive 67/548/EEC: Nature of special risks attributed to dangerous substances and preparations. ... S-phrases are defined in Annex IV of European Union Directive 67/548/EEC: Safety advice concerning dangerous substances and preparations. ... RTECS, also known as Registry of Toxic Effects of Chemical Substances, is a database of toxicity information compiled from the open scientific literature that is available for charge. ... The refractive index of a material is the factor by which the phase velocity of electromagnetic radiation is slowed relative to vacuum. ... The dielectric constant εr (represented as or K in some cases) is defined as the ratio: where εs is the static permittivity of the material in question, and ε0 is the vacuum permittivity. ... Ultraviolet-Visible Spectroscopy or Ultraviolet-Visible Spectrophotometry (UV/ VIS) involves the spectroscopy of photons (spectrophotometry). ... IR spectrum of a thin film of liquid ethanol. ... Nuclear Magnetic Resonance Spectroscopy most commonly known as NMR Spectroscopy is the name given to the technique which exploits the magnetic properties of nuclei. ... It has been suggested that Mass spectrum be merged into this article or section. ... // An ion is an atom, group of atoms, or subatomic particle with a net electric charge. ... Copper(I) chloride (quite commonly called cuprous chloride), is the lower chloride of copper, with the formula CuCl. ... // An ion is an atom, group of atoms, or subatomic particle with a net electric charge. ... Sodium iodide (NaI) is used in polymerase chain reactions (PCR) Categories: Chemistry stubs ... A catalyst (Greek: καταλύτης, catalytÄ“s) is a substance that accelerates the rate (speed) or ease of a chemical reaction (see also catalysis) without itself being changed at the end of the chemical reaction . ... Nylon represents a family of synthetic polymers, a thermoplastic material, invented in 1935 by Wallace Carothers at DuPont. ... In chemistry, the standard state of a material is its state at 1 bar (100 kilopascals) and 25 degrees Celsius (298. ... A chemical compound is a chemical substance formed from two or more elements, with a fixed ratio determining the composition. ...

Contents


Structure

Preparation

In the laboratory, copper(I) Iodide is prepared by simply mixing aqueous solutions of sodium or potassium iodide with soluble copper(II) salt such copper sulfate.

Cu2+ + 2I1- → CuI2 + 2 K+

The CuI2 rapidly decomposed to iodine and insoluble copper(I) iodide.1 2 CuI2 → 2 CuI + I2 Copper(I) Iodide can also prepared by heating iodine and copper in concentrated hydriodic acid,HI.1


Uses

CuI is used as a heat stabilizer for nylon as well as a reagent in organic synthesis. CuI is used as a source of dietary iodine in table salt and animal feed. CuI is used in cloud seeding. CuI is used to coat cathode ray tubes. CuI is used to indicate temperature. CuI is used as a catalyst in organic reactions.1 Nylon represents a family of synthetic polymers, a thermoplastic material, invented in 1935 by Wallace Carothers at DuPont. ... Organic synthesis is the construction of organic molecules via chemical processes. ...


External links

  • Chemicalland properties database
  • National Pollutant Inventory - Copper and compounds fact sheet

References

  1. Patnaik,P. Handbook of Inorganic Chemicals. McGraw-Hill, (2003). p 268.

Marshall, J. A.; Sehon, C. A. "Isomerization of β-alkynyl Allylic Alcohols to Furans Catalyzed by Silver Nitrate on Silica Gel: 2-Pentyl-3-Methyl-5-Heptylfuran [Furan, 5-heptyl-3-methyl-2-pentyl- ]"Organic Syntheses, Vol. 76, p.263 (Coll. Vol. 10, p.599). CuI-promoted acetylide-vinyl halide coupling.


  Results from FactBites:
 
Copper(I) iodide - Wikipedia, the free encyclopedia (507 words)
Copper(I) iodide, an off white, air stable powder, is found in nature as mineral marshite, a redish brown crystal.
Copper(I) iodide is nonmolecular with a zinc blend structure below 420 °C (ɣ-CuI), a wurtzite structure between 390 and 440 °C (β-CuI), and a cubic structure above 440 °C (α-CuI).
Copper(I) bromide and copper(I) chloride transform from zinc blend structure to wurtzite structure at 405 and 435 °C respectively.
Copper(I) chloride - Wikipedia, the free encyclopedia (725 words)
Copper(I) chloride (quite commonly called cuprous chloride), is the lower chloride of copper, with the formula CuCl.
Copper(I) chloride is a Lewis acid, classified as soft according to the Hard-Soft Acid-Base concept.
Copper(I) chloride is also an intermediate formed from copper(II) chloride in the Wacker process.
  More results at FactBites »

 
 

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