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2-chloro-5-fluorobenzyl alcohol; CAS No.: 261762-59-8; 2-chloro-5-fluorobenzyl alcohol. PROPERTIES: This chloro-fluoro-substituted benzyl alcohol features molecular formula C?H?ClFO with molecular weight 165.57 g/mol. It generally appears as a colorless liquid. Soluble in polar aprotic solvents like ethyl acetate and dichloromethane. Boiling point approximately 130-135 C. Exhibits IR absorption for hydroxyl groups (~3300 cm??) and C-Cl/C-F groups (~600-500 cm?? and ~1300-1100 cm??). Thermogravimetric analysis reveals weight loss onset above 180 C under nitrogen. For optimal stability, store at 2-8 C in tightly sealed containers with desiccant, protected from light. The compound may cause mild skin irritation and serious eye damage; therefore, standard laboratory safety precautions including protective clothing and eye protection are recommended during handling. APPLICATIONS: As a chloro-fluoro-substituted benzyl alcohol, 2-chloro-5-fluorobenzyl alcohol is predominantly utilized in the synthesis of agrochemicals. It serves as a key intermediate in constructing pyrazole-based herbicides, where the chloro and fluoro groups provide valuable binding affinity for plant enzymes as demonstrated in pesticide chemistry research (Pest Management Science). Additionally, the compound participates in the development of fluorescent probes for bioimaging applications, where its hydroxyl functionality enables conjugation to biomolecules via oxime formation (Bioconjugate Chemistry). In materials science, it functions as a monomer for preparing polyurethane foams with enhanced thermal stability, where the chloro and fluoro substituents contribute to improved flame retardancy and mechanical properties (Polymer International).