Copper(I) Chloride (CuCl), CAS 7758-89-6, is also known as cuprous chloride or copper monochloride. It is a solid copper(I) reagent for controlled synthesis and copper-compound processing. State assay, impurity limits, particle form and quantity to request the current specification, lot COA, SDS, packaging details and quotation.
Copper(I) Chloride (CuCl) CAS 7758-89-6
- CAS: 7758-89-6
- Synonyms: Copper(I) chloride; Cuprous chloride; Copper monochloride; CuCl
- Einecs: 231-842-9
- Molecular Formula: CuCl
- Grade: Confirm on the current specification and lot COA: assay basis, copper(I)/copper(II), insoluble matter, moisture, metal impurities and particle form.
- Package: Moisture- and air-protected compatible packaging; confirm configuration for particle form, quantity, transport route and destination.
Product Description
Appearance: white to grey powder or crystals; some commercial grades allow a slight greenish tint. Assess colour against the agreed specification and Cu(I)/Cu(II) results.
Water solubility: low; confirm the test basis and handling guidance in the current TDS and SDS.
Chemical formula: CuCl
Molar mass: 99.00 g/mol.
CAS Number: 7758-89-6
Reference melting point: approximately 430 °C.
Quality control: distinguish CuCl assay, total copper and Cu(II) impurities. A metals-basis purity does not establish the Cu(I) content. State the analytical method and reporting basis on the COA, with the TDS and SDS for the specified grade.
Reference density: approximately 4.14 g/cm³ at 25 °C.
Industrial uses: copper(I) reagent or catalyst for selected organic synthesis and polymerization systems, and a raw material for copper phthalocyanine pigments. Match CuCl assay, Cu(II) impurities and particle form to the intended process.
FAQ - Technical & Supply Chain
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Q:
Are Copper(I) Chloride and Cuprous Chloride the same compound?
A: Yes. Copper(I) chloride and cuprous chloride identify CuCl, CAS 7758-89-6. They are not copper(II) chloride or a mixed-valence copper salt. The purchase specification should state the Cu(I) oxidation state, assay basis and maximum Cu(II) content. -
Q:
What are the typical physical properties of Copper(I) Chloride?
A: Copper(I) chloride is a sparingly water-soluble solid with a molar mass of 99.00 g/mol, a reference melting point of about 430 °C and a density of about 4.14 g/cm³ at 25 °C. Commercial grades range from white to grey; a slight greenish tint may be permitted by the specification. Colour alone does not determine the Cu(I) or Cu(II) content. -
Q:
What is Copper(I) Chloride used for?
A: Copper(I) chloride is used as a reagent or catalyst in selected organic synthesis and polymerization systems, and as a raw material for copper phthalocyanine pigments. The required CuCl assay, Cu(II) impurity limit and particle form depend on the process; CuCl is not interchangeable with copper(II) chloride or copper oxychloride. -
Q:
Which specifications matter for industrial Copper(I) Chloride?
A: Specify CuCl assay and test method, Cu(II) impurity limit, total copper where required, moisture or loss on drying, acid-insoluble matter, iron and other application-relevant metals. Validated redox titration, including permanganate titration, is used for Cu(I) assay in manufacturer specifications. A total-copper or metals-basis result alone does not establish Cu(I) content. Request COA/TDS/SDS with the assay basis and agreed impurity tests; GC/HPLC chromatograms are not a routine substitute for these results. -
Q:
What should be confirmed before bulk Copper(I) Chloride delivery?
A: Agree quantity, particle form, moisture- and air-protective packaging, destination and the required COA/TDS/SDS before shipment. Keep containers tightly sealed and follow the SDS for dry storage and any inert-gas requirement. If appearance changes after air or moisture exposure, review the agreed colour limits and Cu(I)/Cu(II) results before use.
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