7758-89-6 Usage
Chemical Properties
Different sources of media describe the Chemical Properties of 7758-89-6 differently. You can refer to the following data:
1. white or pale grey powder
2. Copper chloride is a brownish-yellow powder.
Physical properties
White cubic crystal which turns blue when heated at 178°C; density 4.14 g/cm3; the mineral nantokite (CuCl) has density 4.14 g/cm3, hardness 2.5 (Mohs), refractive index 1.930; melts at 430°C becoming a deep, green liquid; vaporizes around 1,400°C; vapor pressure 5 torr at 645°C and 400 torr at 1,250°C; low solubility in water (decomposes partially); Ksp 1.72x10-7; insoluble in ethanol and acetone; soluble in concentrated HCl and ammonium hydroxide.
Uses
Different sources of media describe the Uses of 7758-89-6 differently. You can refer to the following data:
1. Copper chloride is also known as cupric chloride, this substance was made
by treating copper carbonate with hydrochloric acid. The
greenish blue crystals are soluble in water, alcohol, and ether.
This halide was added to printing-out and silver bromide
emulsions for increased contrast.
2. Copper(I) chloride (CuCl) or cuprous chloride is a white powder used as an absorbing agent
for carbon dioxide gas in enclosed breathing areas such as space vehicles.
3. As catalyst for organic reactions; catalyst, decolorizer and desulfuring agent in petroleum industry; in denitration of cellulose; as condensing agent for soaps, fats and oils; in gas analysis to absorb carbon monoxide.
4. Shows unique character as an initiator of radical reactions such as the hydrostannation of α,β-unsaturated ketones.1
5. It is used for absorption of carbon monoxide in gas analysis.
Definition
ChEBI: An inorganic chloride of copper in which the metal is in the +1 oxidation state.
Preparation
Copper(I) chloride is prepared by reduction of copper(II) chloride in solution: 2CuCl2 + H2 2CuCl + 2HCl Alternatively, it can be prepared by boiling an acidic solution of copper(II) chloride with copper metal, which on dilution yields white CuCl: Cu + CuCl2 2CuCl Copper(I) chloride dissolved in concentrated HCl absorbs carbon monoxide under pressure forming an adduct, CuCl(CO). The complex decomposes on heating releasing CO. Copper(I) chloride is slightly soluble in water. However, in the presence of Cl- ion, it forms soluble complexes of discrete halogeno anions such as, CuCl2-, CuCl3 2-, and CuCl4 3-. Formation of complexes and organocopper derivatives as outlined below are not confined only to copper(I) chloride, but typify Cu+ in general. Reaction with ethylenediamine (en) in aqueous potassium chloride solution forms Cu(II)-ethylenediamine complex, while Cu+ ion is reduced to its metallic state: 2CuCl + 2en → [Cuen2]2+ + 2Cl- + Cu° It dissolves in acetonitrile, CH3CN forming tetrahedral complex ion [Cu(CH3CN)4]+ which can be precipitated with large anions such as ClO4 - or PF6- . Reactions with alkoxides of alkali metals produce yellow copper(I) alkoxides. For example, reaction with sodium ethoxide yield copper(I) ethoxide, a yellow compound that can be sublimed from the product mixture: CuCl + NaOC2H5 → CuOC2H5 + NaCl Copper(I) chloride forms complexes with ethylene and other alkenes in solutions that may have compositions such as [Cu(C2H4)(H2O)2]+ or [Cu(C2H4)(bipy)]+. (bipy = bipyridyl) Reactions with lithium or Grignard reagent yield alkyl or aryl copper(I) derivatives, respectively. Such organocopper compounds containing Cu-Cu bonds are formed only by Cu+ and not Cu2+ ions.
General Description
The structure of copper(I) chloride is similar to zinc-blende crystal at room temperature; the structure is wurtzite at 407 °C and at higher temperatures it forms copper(I) chloride vapor as per mass spectroscopy.
Hazard
Copper(I) chloride is moderately toxic by ingestion and possibly other routes of entry into the body. The oral LD50 in mouse is reported to be 347 mg/kg; and subcutaneous LD50 in guinea pigs is 100 mg/kg.
Shipping
UN2802 Copper chloride, Hazard class: 8; Labels: 8-Corrosive material.
Purification Methods
Wash the solid with ethanol and diethyl ether, then dry it and store it in a vacuum desiccator [.sterl.f Acta Chem Scand 4 375 1950]. Alternatively, to an aqueous solution of CuCl2.2H2O is added, with stirring, an aqueous solution of anhydrous sodium sulfite. The colourless product is dried at 80o for 30minutes and stored under N2. Cu2Cl2 can be purified by zone-refining [Hall et al. J Chem Soc, Faraday Trans 1 79 343 1983]. [Glemser & Sauer in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol II p 1005 1965.]
Incompatibilities
Contact with strong acids forms monovalent copper salts and toxic hydrogen chloride gas. Forms shock-sensitive and explosive compounds with potassium, sodium, sodium hypobromite, nitromethane, acetylene. Keep away from moisture and alkali metals. Attacks metals in the presence of moisture. Reacts with moist air to form cupric chloride dihydrate. May attack some metals, paints, and coatings. May be able to ignite combustible materials.
Check Digit Verification of cas no
The CAS Registry Mumber 7758-89-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,5 and 8 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 7758-89:
(6*7)+(5*7)+(4*5)+(3*8)+(2*8)+(1*9)=146
146 % 10 = 6
So 7758-89-6 is a valid CAS Registry Number.
InChI:InChI=1/2ClH.2Cu/h2*1H;;/q;;2*+1/p-2
7758-89-6Relevant articles and documents
Preparation of biphenols by oxidative coupling of alkylphenols using a recyclable copper catalyst
-
, (2008/06/13)
A method for producing biphenols by oxidative coupling of dialkylphenols which proceeds in two stages using a copper amine complex which is catalytically effective in each stage is disclosed. A novel copper amine complex is also disclosed wherein the complex exhibits high catalytic activity for the oxidative coupling of substituted phenols under mild conditions, has dual (two stage) activity and can be readily recycled and reused.
Preparation of biphenols by oxidative coupling of alkylphenols using copper catalyst
-
, (2008/06/13)
This invention relates to a method for producing biphenols by oxidative coupling of dialkylphenols which proceeds in two stages using a copper amine complex which is catalytically effective in each stage.
Process for the preparation of dialkyl carbonates
-
, (2008/06/13)
A process is described for the preparation of dialkyl carbonates by oxidative carbonylation of the corresponding alcohol in the presence of a copper-containing catalyst at elevated temperature and elevated pressure, which process permits simple separation of the copper-containing catalyst by sedimentation, and of the reaction water in the case of methanol by simple distillation from the reaction solution.