Ethyl red by Research Lab Fine Chem Industries is a high grade reagent. Also known as 4-(Diethylamino)azobenzene-2'-carboxylic Acid, this compound is a pH indicator. The reagent is available as a powder which is miscible with water. It has a melting point of 135 C. While it is stable under general conditions, this reagent is incompatible with strong oxidizing agents. CAS No.: 76058-33-8 Quantity Provided: 25 gm per bottle Molecular formula: C17H19N3O2 Molecular weight: 297.36 Assay: minimum 97 %Ethyl red has a variety of applications in chemical and biological sectors. This compound finds several applications in the synthesis of various organic derivatives. Ethyl red is generally used as a pH indicator where it is red at pH 4.5 and turns yellow at pH 6.5. This reagent is suitable for the industrial synthesis of products and research applications.