Aniline blue by Research Lab Fine Chem Industries is a high grade reagent. Also known as China blue, this is a mixture of two dyes methyl blue and water blue. This formulation is a mixture of the trisulfonates of triphenyl rosaniline and of diphenyl rosaniline. It is an alcohol soluble dye in nature. In fluorescence microscopy after excitation with violet light, it appears yellowish-green in colour. For best performance, the dye must be stored below 30 C, and be used before expiry. CAS No.: 28631-66-5 Quantity Provided: 25 gm per bottle Molecular formula: C32H25N3Na2O9S3 Molecular weight: 737.73Aniline blue has a variety of applications in chemical and biological sectors. This staining solution is widely used to stain collagen, as the fibre stain in Masson's trichrome, as well as to reveal callose structures in plant tissues. Furthermore, it can be used in the Mallory's connective tissue stain and Gmri trichrome stain. It is used in various differential staining procedures. This reagent is suitable for industrial synthesis of products and research applications.