Éosine
The éosine is coloring of color orange-rosy obtained during the distillation of the Houille during manufacture of the coke (Goudron). It is used as dye at the laboratory, to dye the Cytoplasme cells, the Collagène, muscle fibers, the Lymphocyte S and the bacteria. A category of granulocytes, the eosinophilic , of which the number increases during the allergies and certain parasitoses, draws their name from this dye. In pharmaceutical preparation, the éosine (Éosine®) is used like local Antiseptique from its drying properties of the mucous membranes.
There exist two made up called by this name, interchangeable in their use: the éosine Y, derived will tetra brominated of the Fluorescéine, and the éosine B is a derivative dibromo di nitro.
Dye
The éosine is coloring a Acide: it preferably sets at the basic molecules .
Composition of the pharmaceutical preparation
It is about an aqueous solution with disodic 2% of éosine (Marketing authorization French n° 3313716)
Chemical risks and precautions
August 1st
Use in microbiology
In the gélose Methylene blue Eosine (EMB), the éosine is used as inhibiter (partial) of the flora Gram +.
Internal bonds
See also:
External bonds
- on Doctissimo
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