Vermelisin

Vermelisin is a term used in several industrial and artistic contexts to denote a red pigment or dye. Rather than referring to a single chemical substance, vermelisin appears in supplier catalogs and product labels as a label for different red formulations. The lack of a universal chemical identity means that the specific pigment known as vermelisin can vary in composition, hue, and properties from one grade to another.

The name is likely derived from the Portuguese word vermelho (red) and common pigment-name suffixes; it is not an officially recognized IUPAC or regulatory designation.

Because vermelisin encompasses multiple formulations, properties such as color index, opacity or transparency, lightfastness, heat stability, and solubility depend on the exact grade. Some vermelisin pigments are designed for use as organic pigments with red hues; others may be inorganic or mixed formulations.

Vermelisin pigments are used in art paints, coatings, plastics, textiles, and some cosmetics in certain markets. The suitability of a vermelisin grade depends on the intended medium and regulatory constraints.

Safety and regulation: Users should consult the material safety data sheet for the specific vermelisin product. Some red pigments can cause skin irritation or sensitization; regulatory status varies by country and by application.

Notes: Because vermelisin is not a single defined substance, product data should be reviewed for each grade. See also vermilion and other red pigments.