Sudan IV by Research Lab Fine Chem Industries is a high grade reagent. Also known as biebrich scarlet R, this organic compound is a lysochrome (fat-soluble dye) diazo dye. The reagent is available as a reddish brown powder which is soluble in alcohol. It has a melting point of 199 C. While it is stable under general conditions, this reagent is incompatible with strong oxidizing agents. CAS No.: 85-83-6 Quantity Provided: 25 gm per bottle Molecular formula: C24H20N4O Molecular weight: 380.44 Assay: 80 Sudan IV has a variety of applications in chemical and biological sectors. Industrially, this dye is used to color non-polar substances like oils, fats, waxes, greases, various hydrocarbon products, and acrylic emulsions. It is also utilized as a fuel dye to dye lower-taxed heating oil. As a biological stain, sudan IV is used to stain lipids, triglycerides and lipoproteins on frozen paraffin sections. It aids in visually qualifying the presence of the fatty compounds of interest without isolating it. This reagent is suitable for industrial synthesis of products and research applications.