4-Aminophenylarsonic acid, also known as arsanilic acid (CAS 98-50-0), is a fascinating organoarsenic compound with a rich chemical profile. Its structure, featuring an arsenic atom directly bonded to a phenyl group substituted with an amino group at the para position, imparts unique reactivity and properties. The synthesis of arsanilic acid typically involves the reaction of aniline with arsenic acid under specific conditions, a process that requires careful control of temperature and reaction intermediates to achieve a high yield and purity. The manufacturing process often includes steps for purification, such as crystallization from water or ethanol/ether mixtures, to obtain the desired off-white fine crystalline powder.

The chemical behavior of arsanilic acid is analogous to that of phenylarsonic acid, making it a versatile reagent. Its reactivity is influenced by both the amino group and the arsonic acid moiety, allowing it to participate in a variety of chemical transformations. These include its use as a precursor for synthesizing other arsonic acid derivatives, which find applications in pharmaceuticals and as analytical reagents. The compound's stability and compatibility with certain solvents are critical considerations for chemists when planning synthesis projects or formulating products. Understanding these chemical nuances is vital for anyone looking to buy arsanilic acid for industrial or research purposes, ensuring optimal results and safe handling. NINGBO INNO PHARMCHEM CO.,LTD. focuses on producing arsanilic acid that meets stringent chemical specifications for diverse applications.