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Merck

735906

Copper(I) bromide

AnhydroBeads™, -10 mesh, 99.99% trace metals basis

Synonym(s):

Cuprous bromide

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About This Item

Linear Formula:
CuBr
CAS Number:
7787-70-4
Molecular Weight:
143.45
NACRES:
NA.23
PubChem Substance ID:
329765065
UNSPSC Code:
12352302
EC Number:
232-131-6
MDL number:
MFCD00010969
Assay:
99.99% trace metals basis
Grade:
synthesis grade
Form:
beads

Key Documents

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grade

synthesis grade

Quality Level

100

product line

AnhydroBeads™

assay

99.99% trace metals basis

form

beads

reaction suitability

core: copper

impurities

≤150.0 ppm Trace Metal Analysis

particle size

-10 mesh

mp

504 °C (lit.)

density

4.71 g/mL at 25 °C (lit.)

application(s)

electroplating
material synthesis precursor

SMILES string

[Cu]Br

InChI

1S/BrH.Cu/h1H;/q;+1/p-1

InChI key

NKNDPYCGAZPOFS-UHFFFAOYSA-M

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General description

Cuprous bromide may be prepared by the reduction of cupric bromide or CuSO4-NaBr. In the molten state, it is grayish brown /greenish brown in color.

Application

Some reported applications of copper bromide are:
  • catalyst in cross coupling reactions.
  • co-catalyst in Sonogashira coupling.
  • Lewis acid in enantioselective addition of alkynes.
  • reducing agent, when complexed by three molecules of pyridine initiators for the controlled polymerization of styrene, methyl acrylate and methyl methacrylate.

Reductive homocoupling of α-bromo- α- chlorocarboxylates to dimethyl α, α′ dichlorosuccinate derivatives in presence of CuBr/LiOCH3 in methanol has been reported.

Legal Information

AnhydroBeads is a trademark of Sigma-Aldrich Co. LLC

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Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Skin Irrit. 2

Storage Class

13 - Non Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Deleterious substance

pdsc

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

735906-25G-PW: + 735906-VAR: + 735906-25G:4548173331706 + 735906-BULK:

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Certificates of Analysis (COA)

Lot/Batch Number
0000198526
0000173415
0000198526
0000173415
0000065915

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Denissova I and Barriault L
Handbook of Reagents for Organic Synthesis null
Study on atom transfer radical polymerization initiated by p-nitrophenyl initiator and synthesis of amino end-functionalized polymers thereof
Qu, T.; Cai, W.; Fu, Z.; Shi, Y.
Macromolecular Research, 18(7), 623-629 (2010)
Shengtong Sun et al.
The journal of physical chemistry. A, 114(32), 8331-8336 (2010-08-13)
A designed ligand-accelerated Cu(I)-catalyzed cycloaddition (CuAAC) reaction was monitored for the first time by real time infrared analysis technique based on ATR-FTIR principles. Principal components analysis (PCA) and two-dimensional correlation spectroscopy (2Dcos) results showed that the consumption of alkyne and
Denissova I and Barriault L et al.
Handbook of Reagents for Organic Synthesis null
B Podobnik et al.
Bioconjugate chemistry, 26(3), 452-459 (2015-01-30)
The covalent attachment of poly(ethylene glycol) (PEG) to therapeutic proteins is a commonly used approach for extending in vivo half-lives. A potential limitation of this PEGylation strategy is the adverse effect of PEG on conjugate viscosity. Interferon-alpha (IFN) was conjugated
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