1-Bromo-4-chlorobutane, with the CAS number 6940-78-9, is a high - quality chemical compound. Chemically, it has the molecular formula C₄H₈BrCl. The molecular weight of this compound is approximately 171.46 g/mol. It is a colorless to pale - yellow liquid under normal conditions. The density of 1 - Bromo-4 - chlorobutane is around 1.47 g/cm³. It has a boiling point in the range of 168 - 172 °C and a melting point of - 34 °C. This product is stored at room temperature and should be kept in a tightly closed container away from heat sources, open flames, and incompatible substances.
1 - Bromo-4 - chlorobutane serves a wide variety of purposes in the chemical industry. In organic synthesis, it is commonly used as an alkylating agent. It can introduce a four - carbon chain with a bromine and a chlorine atom to a target molecule, which is crucial for the synthesis of complex organic compounds. For example, it is utilized in the synthesis of pharmaceuticals. Many drugs require the incorporation of specific carbon chains and functional groups, and 1 - Bromo-4 - chlorobutane can help achieve this goal. It is also used in the production of agrochemicals. Pesticides and herbicides often need specific chemical structures for their biological activities, and this compound can be a key building block in their synthesis. Additionally, it finds applications in the research of new materials, where it can contribute to the modification of polymer structures and the development of novel materials with unique properties.
When handling 1 - Bromo-4 - chlorobutane, it is essential to take proper safety precautions. First, wear appropriate personal protective equipment, including safety goggles, gloves, and a lab coat. Work in a well - ventilated area, preferably under a fume hood, to avoid inhalation of vapors. Before using it in a reaction, ensure that all glassware and equipment are clean and dry. Measure the required amount of 1 - Bromo-4 - chlorobutane accurately using a calibrated pipette or burette. When adding it to a reaction mixture, do so slowly to prevent splashing. After the reaction is complete, proper waste disposal methods should be followed according to local regulations. If there is any spillage, immediately clean it up using appropriate absorbent materials and dispose of them safely.
Case 1: Pharmaceutical Synthesis
A research team was working on the synthesis of a new anti - inflammatory drug. They needed to introduce a specific alkyl group to an existing molecular structure. By using 1 - Bromo-4 - chlorobutane as an alkylating agent, they were able to attach the desired four - carbon chain with bromine and chlorine functionality. The reaction was carried out in an organic solvent under controlled temperature and pressure conditions. After purification steps, they obtained the desired intermediate with a high yield, which was a significant step in the overall drug synthesis process.
Case 2: Agrochemical Production
A company was developing a new herbicide. They used 1 - Bromo-4 - chlorobutane in the synthesis of a key intermediate. The compound was reacted with other starting materials in a multi - step process. The unique reactivity of 1 - Bromo-4 - chlorobutane allowed for the formation of a complex molecular structure with the required biological activity. After formulation and testing, the new herbicide showed excellent weed - killing properties in field trials.
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