It is a red dye used in microscopy as a mordant for the staining of flagella, as well as for detecting elastic tissue in sputum.
Sergio Pimpinelli, et al. Preparation and orcein staining of mitotic chromosomes from Drosophila larval brain.Cold Spring Harb Protoc.2010,2010(3), 5389.
L. La Cour. Acettc-Orcein: A New Stain-Fixative for Chromosomes.Stain Technology.1941,16(4), 169-174.
Hazard Statements: H302
Harmful if swallowed.
Precautionary Statements: P264-P270-P301+P312a-P330-P501a
Wash thoroughly after handling. Do not eat, drink or smoke when using this product. IF SWALLOWED: Rinse mouth. Dispose of contents/container in accordance with local/regional/national/international regulations.