Overview
1-Bromo-2-Chloroethane is a halogenated alkane primarily employed as a building block in organic synthesis. Its dual halogen functionality (bromine and chlorine) makes it valuable for nucleophilic substitution reactions, particularly in pharmaceutical and agrochemical manufacturing. The compound was first synthesized in the early 20th century and gained industrial importance due to its reactivity and relatively low production cost. Modern production typically involves the addition of bromine and chlorine to ethylene under controlled conditions.
Physical and Chemical Properties
This compound exhibits typical halogenated hydrocarbon characteristics: high density (1.74 g/cm³), moderate volatility (boiling point 106-108°C), and limited water solubility. The bromine atom makes it more reactive than purely chlorinated ethanes, while the chlorine contributes to molecular stability. Key reactivity includes susceptibility to both SN1 and SN2 substitution mechanisms. It undergoes dehydrohalogenation with strong bases to form vinyl halides. The compound's vapor is heavier than air, requiring special ventilation considerations in industrial settings.
Main Applications
In pharmaceutical synthesis, 1-Bromo-2-Chloroethane serves as an intermediate for β-blockers and other active pharmaceutical ingredients (APIs). Its ability to introduce both halogen atoms in controlled reactions makes it valuable for constructing complex molecules. The agrochemical industry utilizes it in pesticide formulations, particularly for compounds requiring ethane backbones with halogen substituents. Some specialty polymer applications use it as a crosslinking agent or initiator modifier.
Safety and Storage
As a halogenated hydrocarbon, proper handling requires chemical-resistant gloves (nitrile or neoprene), eye protection, and respiratory equipment if vapor concentrations exceed permissible exposure limits (PEL: 5 ppm). Store in amber glass or HDPE containers with tight seals to prevent moisture absorption and photodegradation. Fire hazards require special attention - use dry chemical or CO2 extinguishers, never water jets. Spills should be contained with inert absorbents (vermiculite or sand) and disposed as hazardous waste according to local regulations.
B2B Procurement Guide
Industrial buyers should prioritize suppliers with ISO 9001 certification and batch-specific Certificates of Analysis (CoA). Key quality parameters include purity (≥98%), water content (<0.5%), and absence of heavy metal contaminants. For large-scale procurement (ton quantities), consider regional production hubs in China (Jiangsu, Shandong) or Europe (Germany). Spot prices fluctuate with bromine market trends. Long-term contracts (6-12 months) often secure better pricing stability.
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