Bromobenzene-d5

Updated: 2026-07-15

Overview

Bromobenzene-d5 is a deuterated derivative of bromobenzene, where five hydrogen atoms are replaced by deuterium. This modification makes it particularly useful in nuclear magnetic resonance (NMR) spectroscopy, as deuterium does not interfere with proton NMR signals. It is widely employed in chemical research, especially in studies requiring isotopic labeling. The compound is synthesized through halogen exchange or direct deuteration of bromobenzene. Its stable isotopic composition and predictable chemical behavior make it a reliable tool in analytical chemistry and materials science.

Physical and Chemical Properties

Bromobenzene-d5 is a colorless to pale yellow liquid with a density of 1.52 g/cm³. It has a melting point of −30.8 °C and a boiling point of 156 °C, similar to its non-deuterated counterpart. The compound is soluble in common organic solvents like ethanol, ether, and chloroform but is insoluble in water. Its key chemical property is the presence of deuterium atoms, which significantly reduce background noise in NMR spectra. This makes bromobenzene-d5 an ideal solvent for proton NMR, where high signal clarity is essential. The compound is stable under normal conditions but should be handled with care due to its toxicity.

Main Applications

Bromobenzene-d5 is primarily used as a solvent in NMR spectroscopy, where its deuterated structure minimizes interference with proton signals. It is also employed in isotopic labeling experiments to trace reaction mechanisms or study molecular dynamics. Researchers value its predictable behavior and compatibility with a wide range of organic compounds. In addition to research, bromobenzene-d5 finds niche applications in pharmaceuticals and materials science. For instance, it can serve as a reference standard in analytical chemistry or as a building block in synthesizing deuterated pharmaceuticals. Its role in advancing scientific understanding makes it a staple in many laboratories.

Safety and Storage

Bromobenzene-d5 is harmful if inhaled, swallowed, or absorbed through the skin. It can cause irritation to the eyes, skin, and respiratory tract. Proper personal protective equipment (PPE), including gloves and goggles, should be worn when handling this compound. Work should be conducted in a well-ventilated area or under a fume hood. The compound should be stored in a cool, dry place away from light and moisture. Containers must be tightly sealed to prevent evaporation and contamination. In case of leakage, absorb the liquid with an inert material and dispose of it according to local regulations. Always refer to the material safety data sheet (MSDS) for detailed handling instructions.

B2B Procurement Guide

When procuring bromobenzene-d5, prioritize suppliers with a proven track record in deuterated compounds. Verify the CAS number (4165-57-5) to ensure product authenticity. High purity (≥98%) is essential for research applications, so request certificates of analysis (CoA) from the vendor. Bulk purchases may offer cost savings, but consider storage limitations and shelf life. Prices typically range from $200 to $500 per gram, depending on purity and supplier. For international shipments, confirm compliance with transportation regulations for hazardous chemicals. Establishing long-term relationships with reputable suppliers can ensure consistent quality and reliability.