P304+P340：IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338：IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405：Store locked up.
Description
It is used as a pharmaceutical intermediate. he reaction of 2?-substituted biphenyl-2-carboxylic acids (where the 2?-substituent is H, CO2H, NO2, Cl, OMe, or CO2Me) with lead tetra-acetate in refluxing benzene solution, under a nitrogen atmosphere, affords 3,4-benzocoumarin as a major organic product.
