Dimethyl yellow pH indicator by Research Lab Fine Chem Industries is a high grade reagent. Also known as Methyl yellow, this is an azo dye derived from dimethylaniline. The reagent is available as crystalline yellow powder which is poorly soluble in water. It has a melting point of 111 116 C at which it decomposes. While it is stable under general conditions, this reagent is incompatible with strong oxidizing agents. CAS No.: 60-11-7 Quantity Provided: 25 gm per bottle Molecular formula: C14H15N3 Molecular weight: 225.29 Assay: 98 %Dimethyl yellow has a variety of applications in chemical and biological sectors. This compound finds several applications in the synthesis of various organic derivatives. Dimethyl yellow is generally used as a dye for plastics, however it is also a pH indicator. The indicator is red below pH 2.9, and transitions to yellow above pH 4.0. This finds it applications in the titration of a weak base with a strong acid. This reagent is suitable for the industrial synthesis of products and research applications.