Sudan Black B by Research Lab Fine Chem Industries is a high grade reagent. Also known as Fat Black HB, this organic compound is a lysochrome (fat-soluble dye) diazo dye. The reagent is available as a dark brown to black powder which is soluble in alcohol. It has a melting point of 120 to 124 C. Sudan Black is obtained by the coupling of diazotized 4-phenylazo-1-naphthylamine with 2,3-dihydro-2,2-dimethyl-1H-perimidine. While it is stable under general conditions, this reagent is incompatible with strong oxidizing agents. CAS No.: 4197-25-5 Quantity Provided: 100 gm per bottle Molecular formula: C29H24N6 Molecular weight: 456.54 Assay: 60 Sudan Black B has a variety of applications in chemical and biological sectors. As a biological stain, this dye is used to stain neutral lipids, triglycerides and some lipoproteins on frozen paraffin sections. It is efficient in detecting fats that are contaminated with oil and grease. Sudan black B is also used to enhance fingerprints. Furthermore, it will stain myeloblasts but not lymphoblasts when differentiating haematological disorders. This reagent is suitable for industrial synthesis of products and research applications.