C

Copper(I) bromide

IUPAC: bromocopper

BrCu Laboratory Reagents CAS 7787-70-4
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Quick Reference
Formula / NotationBrCu
CAS Number7787-70-4
Molecular Weight143.45
Melting Point939.2 °F (USCG, 1999)
Boiling Point2453 °F at 760 mmHg (USCG, 1999)
Density4.72 at 77 °F (USCG, 1999) - Denser than water; will sink
SolubilitySlightly sol in cold water; sol in hydrochloric acid, hydrobromic acid, ammonium hydroxide with the formation of complexes; practically insoluble in acetone, concentrated sulfuric acid
AppearanceCopper (i) bromide appears as white powder or crystal. Turns green to dark blue on exposure to sunlight. Sinks and mixes slowly with water. (USCG, 1999)
Also Known Asbromocopper; 7787-70-4; CUPROUS BROMIDE; Bromocopper; Copper(1+) bromide; Copper bromide (CuBr); UNII-R8V209A5G0; HSDB 270; EINECS 232-131-6; DTXSID6052530
CategoryLaboratory Reagents

What is Copper(I) bromide?

Copper(I) bromide (BrCu) is a laboratory reagent that appears as Copper (i) bromide appears as white powder or crystal. Turns green to dark blue on exposure to sunlight. Sinks and mixes slowly with water. (USCG, 1999). It has a molecular weight of 143.45 g/mol. Its IUPAC name is bromocopper. Boiling point: 2453 °F at 760 mmHg (USCG, 1999). Melting point: 939.2 °F (USCG, 1999).

Formula & Notation

BrCu

IUPAC Name: bromocopper

Other Names / Synonyms: bromocopper; 7787-70-4; CUPROUS BROMIDE; Bromocopper; Copper(1+) bromide; Copper bromide (CuBr); UNII-R8V209A5G0; HSDB 270; EINECS 232-131-6; DTXSID6052530

Properties & Characteristics

Appearance: Copper (i) bromide appears as white powder or crystal. Turns green to dark blue on exposure to sunlight. Sinks and mixes slowly with water. (USCG, 1999). Molecular formula: BrCu. Molecular weight: 143.45 g/mol. Boiling point: 2453 °F at 760 mmHg (USCG, 1999). Melting point: 939.2 °F (USCG, 1999). Density: 4.72 at 77 °F (USCG, 1999) - Denser than water; will sink. Solubility: Slightly sol in cold water; sol in hydrochloric acid, hydrobromic acid, ammonium hydroxide with the formation of complexes; practically insoluble in acetone, concentrated sulfuric acid. Vapor pressure: 1 MM HG @ 572 °C.

Physical Data

PropertyValue
Melting Point939.2 °F (USCG, 1999)
Boiling Point2453 °F at 760 mmHg (USCG, 1999)
Density4.72 at 77 °F (USCG, 1999) - Denser than water; will sink
Molecular Weight143.45
SolubilitySlightly sol in cold water; sol in hydrochloric acid, hydrobromic acid, ammonium hydroxide with the formation of complexes; practically insoluble in acetone, concentrated sulfuric acid
AppearanceCopper (i) bromide appears as white powder or crystal. Turns green to dark blue on exposure to sunlight. Sinks and mixes slowly with water. (USCG, 1999)

Uses & Applications

Used as a synthetic reagent for transformations including oxidation, reduction, coupling, or functional group manipulation.

Safety Information

Hazardous reagent. May be toxic, corrosive, flammable, or reactive. Use in fume hood with full PPE. Consult SDS before use.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Copper(I) bromide
Formula BrCu
CAS Number 7787-70-4
Molecular Weight 143.45
Synonyms bromocopper; 7787-70-4; CUPROUS BROMIDE; Bromocopper; Copper(1+) bromide; Copper bromide (CuBr); UNII-R8V209A5G0; HSDB 270; EINECS 232-131-6; DTXSID6052530

Frequently Asked Questions

Copper(I) bromide (BrCu) is a laboratory reagent that appears as Copper (i) bromide appears as white powder or crystal. Turns green to dark blue on exposure to sunlight. Sinks and mixes slowly with water. (USCG, 1999). It has a molecular weight of 143.45 g/mol. Its IUPAC name is bromocopper. Boiling point: 2453 °F at 760 mmHg (USCG, 1999). Melting point: 939.2 °F (USCG, 1999).

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.