Copper(I) bromide

Description

CUPROUS BROMIDE · CAS 7787-70-4 · BrCu. UNII R8V209A5G0. Boiling Point: 2453 °F at 760 mmHg (USCG, 1999); Boiling Point: 1345 °C; Melting Point: 939.2 °F (USCG, 1999).

Identification

CAS Registry Number	7787-70-4
PubChem CID	24593
Molecular formula	BrCu
IUPAC name	bromocopper
UNII (FDA)	R8V209A5G0

Computed Descriptors

Molecular Weight	143.45
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	0
Rotatable Bond Count	0
Exact Mass	141.84793
Monoisotopic Mass	141.84793
Topological Polar Surface Area	0
Heavy Atom Count	2
Formal Charge	0
Complexity	2

Physical & Chemical Properties

Boiling Point	2453 °F at 760 mmHg (USCG, 1999)
Boiling Point	1345 °C
Melting Point	939.2 °F (USCG, 1999)
Melting Point	504 °C
Density	4.72 @ 25 °C/4 °C
Vapor Pressure	1 MM HG @ 572 °C

Physical description & handling notes

• 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)
• White solid; Becomes green to dark-blue on sunlight exposure; Slightly soluble in cold water; Decomposed by hot water; [Merck Index] Powder; Isoluble in water; [Sigma-Aldrich MSDS]
• White powder or cubic crystals (zinc blende structure)
• White tetrahedral crystals
• White crystalline solid becoming green in light
• 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

Regulatory Status

Regulatory & Food Contact	FDA Cumulative Estimated Daily Intake (CEDI): FCS FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS

GHS Hazard Classification

Reported hazard statements	H302, H312 (12.3%), H315 (99.6%), H318 (72.4%), H319 (27.2%), H335 (27.2%), H400 (73.7%), H410 (74.1%)

Documented Uses

• Used as a polymerization catalyst; [HSDB]
• As a catalyst for organic reactions
• As a polymerization catalyst for organic reactions.
• Prepn: Briggs, J Chem Soc 127: 496 (1925); Keller, Wycoff, Inorg Syn 2: 3 (1946); Wagner, Wagner, J Chem Phys 26: 1597 (1957).
• ... By reducing copper(II) sulfate soln containing potassium bromide with sulfur dioxide or other standard reducing agents, or with metallic copper.
• Prepared pyrometallurgically or by reducing a copper(II) sulfate solution in the presence of sodium bromide, usually with sulfur dioxide or metallic copper.

Synonyms

Copper(I) bromide; 7787-70-4; CUPROUS BROMIDE; Bromocopper; Copper(1+) bromide; Copper monobromide; Copper bromide (CuBr); UNII-R8V209A5G0; HSDB 270; EINECS 232-131-6; DTXSID6052530; RefChem:127896; DTXCID3031103; 232-131-6; COPPER(I) BROMIDE [HSDB]; CUPROUS BROMIDE [MI]

Frequently Asked Questions

What are the CAS number and molecular formula of CUPROUS BROMIDE?

CAS 7787-70-4; molecular formula BrCu; molecular weight — g/mol.

What other names is CUPROUS BROMIDE known by?

Copper(I) bromide, 7787-70-4, CUPROUS BROMIDE, Bromocopper, Copper(1+) bromide, Copper monobromide.

What is the regulatory status of CUPROUS BROMIDE?

Documented regulatory listings: FDA Cumulative Estimated Daily Intake (CEDI): FCS; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS.

Is CUPROUS BROMIDE classified as hazardous?

Hazard statements reported: H302, H312, H315, H318, H319.

What are the key physical properties of CUPROUS BROMIDE?

Boiling Point: 2453 °F at 760 mmHg (USCG, 1999); Boiling Point: 1345 °C; Melting Point: 939.2 °F (USCG, 1999); Melting Point: 504 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.