Cupric Bromide: Properties, Composition, Applications, and Storage

Introduction to Cupric Bromide

Cupric bromide is an inorganic compound with the chemical formula CuBr2. Used as analytical reagents and catalysts. Cupric bromide is a light gray or black crystalline or crystalline powder with deliquescence. Very soluble in water. Dissolve in ethanol, acetone, pyridine, and ammonia. Toxic, not edible.

Figure 1 Characteristics of Cupric bromide

Properties of Cupric Bromide

Copper bromide has typical halide characteristics, is easily soluble in water, and forms a blue solution. This compound gradually absorbs water in humid environments and forms copper bromide hydrate. Under heating conditions, CuBr ₂ decomposes to produce copper elemental and bromine gas. The crystal structure of copper bromide belongs to the monoclinic system, and its stability and solubility make it a reliable reagent in many chemical reactions. Cupric bromide is a dark green crystal that is soluble in water and alcohol solvents. Cupric bromide has high thermal stability. Cupric bromide has a certain degree of corrosiveness and can have a certain corrosive effect on metals.

The Use of Cupric Bromide

Cupric bromide is commonly used in organic synthesis chemical reactions as a catalyst or mediator. Cupric bromide is also used in the production of dyes and pigments, as well as in the preparation of photosensitive materials. Cupric bromide can be used to test the content of dissolved heavy metals in water. Laser technology: Copper bromide, as an important gain medium for copper vapor lasers, is widely used in high-precision spectroscopic analysis and medical laser equipment.

Catalyst: CuBr ₂ is an efficient catalyst in organic synthesis, particularly suitable for oxidation reactions and carbon-carbon bond formation processes.

Chemical research: Due to its stability and special redox properties, copper bromide is often used in laboratory research and is an important reagent for many basic chemical reactions.

Preservatives: In some fields, copper bromide is also used as a preservative for wood and fabrics, playing a key role in its antibacterial and anti-corrosion properties.

The toxic effects of Cupric Bromide

Although Cupric Bromide has important and frequent use in chemical and industrial environments, we must also take the side effects of Cupric Bromide seriously. For example, copper bromide dust or solution can be irritating to human skin and mucous membranes, which may cause adverse reactions such as redness, swelling, or itching. Inhaling dust in high concentration exposure may cause respiratory irritation symptoms such as coughing and sore throat. In addition, long-term exposure may lead to chronic copper poisoning, manifested as headaches, nausea, or abnormal liver function. To reduce risks, protective equipment, including gloves and goggles, should be worn during operation, and the working environment should be well-ventilated. If accidentally touched, immediately rinse the affected area with plenty of water and seek medical attention for examination. During storage, direct sunlight and moisture should be avoided to prevent accidents caused by changes in chemical properties.

The production method of Cupric Bromide

The preparation of Cupric Bromide can be achieved through direct reaction. Reacting copper with bromine compounds (such as bromine gas and sodium bromide) to produce copper bromide. Additionally, copper bromide can be prepared by reacting copper chloride with sodium bromide. In industry, copper bromide can be produced directly by reacting copper metal with bromine gas, or by reacting copper salts (such as copper sulfate) with bromide solutions to form precipitates that can be separated and purified. These methods are easy to operate and cost-effective and are common approaches for preparing CuBr ₂.

Cupric Bromide's Security Information

Cupric bromide is irritating and corrosive to the skin and eyes and should be protected when used. Before operating Cupric bromide, appropriate protective measures should be taken, such as wearing chemical protective gloves, safety goggles, etc. If accidentally inhaled or in contact with Cupric bromamide, rinse immediately with plenty of water. If there is severe discomfort, seek medical attention immediately. Cupric bromide should be stored in a dry, well-ventilated place and kept away from sources of fire and combustibles.

Reference

[1] Helmholz L. The crystal structure of anhydrous cupric bromide[J]. Journal of the American Chemical Society, 1947, 69(4): 886-889.

[2] Doifode K B. Reaction of Some Organic Compounds with Cupric Bromide[J]. The Journal of Organic Chemistry, 1962, 27(7): 2665-2667.

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