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7789-45-9

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Identification

Name
Cupric bromide
CAS
7789-45-9
Synonyms
COPPER(+2)BROMIDE
COPPER BROMIDE
COPPER(II) BROMIDE
CUPRIC BROMIDE
copperbromide(cubr2)
copperdibromide
Copperic bromide
Copper(Ⅱ) bromide
COPPER(II) BROMIDE, 99.999%
CUPRIC BROMIDE CRYSTALLINE
Copper(II)bromide,ReagentGrade,Cu28.1%min
Copper(II)bromide,99%
Copper(II) bromide, anhydrous, extra pure, 99+%
CUPRIC BROMIDE REAGENT
CUPRIC BROMIDE, 99.999%
Copper(Ⅱ) bromide, anhydrous
copper(ii) bromide, reagent grade
COPPER()BROMIDE,ANHYDROUS
CUPRICBROMIDE,CRYSTAL,REAGENT
Copper(II) bromide, Reagent
EINECS(EC#)
232-167-2
Molecular Formula
Br2Cu
MDL Number
MFCD00010970
Molecular Weight
223.35
MOL File
7789-45-9.mol

Chemical Properties

Appearance
Black crystal
Melting point 
498 °C(lit.)

mp 
498 °C(lit.)

Boiling point 
900 °C
bp 
900 °C
density 
4.77 g/mL at 25 °C(lit.)

Fp 
900°C
storage temp. 
Store below +30°C.
solubility 
1200g/l
form 
Crystalline Powder
color 
Gray-blue
Specific Gravity
4.77
Stability:
Stable. Incompatible with alkali metals, moisture. Reacts violently with potassium.
Water Solubility 
soluble
Sensitive 
Hygroscopic
Merck 
14,2629
CAS DataBase Reference
7789-45-9(CAS DataBase Reference)
NIST Chemistry Reference
copper(II) dibromide(7789-45-9)
EPA Substance Registry System
Copper bromide (CuBr2) (7789-45-9)

Safety Data

Hazard Codes 
C,Xi
Risk Statements 
R22:Harmful if swallowed.
R34:Causes burns.
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S24/25:Avoid contact with skin and eyes .
RIDADR 
UN 3260 8/PG 3

WGK Germany 
3

TSCA 
Yes
HazardClass 
8
PackingGroup 
III
HS Code 
28275900
Hazardous Substances Data
7789-45-9(Hazardous Substances Data)
Toxicity
LD50 orally in Rabbit: 536 mg/kg

Raw materials And Preparation Products

Hazard Information

General Description
Odorless black solid. Sinks and mixes with water.
Reactivity Profile
Acidic inorganic salts, such as COPPER BROMIDE(7789-45-9), are generally soluble in water. The resulting solutions contain moderate concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Many of these compounds catalyze organic reactions.
Air & Water Reactions
Deliquescent. Water soluble.
Health Hazard
Inhalation of dust causes irritation of throat and lungs. Ingestion of large amounts causes violent vomiting and purging, intense pain, collapse, coma, convulsions, and paralysis. Contact with solutions causes eye irritation; contact with solid causes severe eye surface injury and skin irritation.
Fire Hazard
Special Hazards of Combustion Products: Irritating hydrogen bromide gas may form in fire.
Purification Methods
Crystallise it twice by dissolving it in water (140mL/g), filtering to remove any Cu2Br2, and concentrating under vacuum at 30o until crystals appear. The cupric bromide is then allowed to crystallise by leaving the solution in a vacuum desiccator containing P2O5 [Hope et al. J Chem Soc 5226 1960, Glemser & Sauer in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol II p 1009 1965].

Material Safety Data Sheet(MSDS)

Questions And Answer

Description
Cupric bromide is a kind of inorganic compound obtained through the reaction between copper oxide and hydrobromic acid. It can be used in laser, generating pulse yellow and green light. The cupric bromide laser is an important technology used in dermatology for the treatment of pigmented lesion and vascular lesions. It can also be used in living radical polymerization and as an intensifier in photographic processing. It is also a brominating agent used in organic synthesis. In addition, it is a kind of highly efficient catalyst in the direct alkynylation of azoles.
Chemical Properties
Copper(II) bromide, CuBr2, [7789-45-9], MW 223.36, MP 498°C, d 4.77, is a black, deliquescent, monoclinic, crystalline material that obtains from warm aqueous solution. At temperatures below 29°C, the green tetrahydrate is produced. Copper(II) bromide is very soluble in water and soluble in alcohol and acetone.
Uses
Copper(II) bromide is used as a catalyst in organic reactions, as an intensifier in photography, and as a brominating agent.
Preparation
Copper(II) bromide is most easily prepared by neutralization of copper(II) oxide, carbonate, or hydroxide with hydrobromic acid. It can also be produced by oxidation of copper metal with bromine water or by reaction of bromine solutions in alcohol with copper powder.
References
Shen, Youqing, Shiping Zhu, and Robert Pelton. Macromolecules 34.10 (2001): 3182-3185.
Rothfleisch, Jeremy E., et al. Dermatologic clinics 20.1 (2002): 1- 18.
Huang, Jianhui, Simon JF Macdonald, and Joseph PA Harrity. Chemical Communications 4 (2009): 436-438.
Besselièvre, François, and Sandrine Piguel. Angewandte Chemie International Edition 48.50 (2009): 9553-9556.

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