eosin

(redirected from eosine)
Also found in: Dictionary, Thesaurus, Medical.
Related to eosine: methylene blue, Betadine

eosin

[′ē·ə·sən]
(organic chemistry)
C20H8O5Br4
A red fluorescent dye in the form of triclinic crystals that are insoluble in water; used chiefly in cosmetics and as a toner. Also known as bromeosin; bromo acid; eosine; tetrabromofluorescein.
The red to brown crystalline sodium or potassium salt of this dye; used in organic pigments, as a biological stain, and in pharmaceuticals.
References in periodicals archive ?
The dye detector retrieved at the pipe seven days later tested positive for fluorescein, as well as the eosine used in one of the previous tracing attempts.
And then in the 1870s, out of the lab came alizarine, eosine, and roccellin--each in its way a perfectly matched cochineal-like hue.
Table 4--Stain Resistance of Cured Coatings (a) Stain Formulation A Formulation B Formulation C Resistance Emulsion Reference Reference Test Water-based Solvent-based UV-PUD RC Oligomer #1 Black shoe 5 5 5 polish #2 Tar 5 5 5 #3 Black marker 5 5 5 (Artline[R] 70 N) #4 Blue 5 5 5 colorant ( BB750 H20) #5 Sudan red 5 5 5 colorant ( SR380-WS) #6 Yellow 5 5 5 colorant ( SG146-WS) #7 Eosine 5 5 5 #8 4.