Eosin B is a form of eosin which is a compound
Eosin is a kind of fluorescent red dye. It is an artificial derivative of fluorescein and consists of two closely related compounds, eosin Y and eosin b. eosin Y is more widely used. It is a tetrabromo derivative of fluorescein, with yellowish castings (also known as eosin). Eosin Y can be further divided into water-soluble and ethanol soluble Eosin Y. According to the author’s experience, the ethanol soluble eosin Y has faster dyeing speed and brighter color than the water soluble one. Eosin B is a dibromodinitro derivative of fluorescein, which is light blue. Eosin B performs as well as Eosin Y, sometimes showing a brighter red. The two dyes are interchangeable. Using one or the other may be just a matter of preference or tradition. Eosin can be used to stain the cytoplasm, red blood cells, collagen and muscle fibers for histological examination. In H&E dyeing, it is most commonly used as the anti dye of hematoxylin. In H&E, the concentration of eosin Y is usually 0.5-1% (0.5-1 g eosin Y is in 100 ml distilled water or 75% ethanol).
Yu and Fugetsu developed a new adsorbent, which inserted MWCNTs into the holes of dolomite to remove ethyl bromide, acridine orange, methylene blue, Eosin B and Eosin Y dyes from wastewater. The foam line CNTs/dolomite adsorbent was prepared by using polyurethane polymer as binder. The adsorption of cationic dyes, acridine orange, ethidium bromide and methylene blue reached equilibrium within 30 minutes, while the adsorption of anionic dyes, eosin B and eosin y reached equilibrium within 60 minutes. The maximum adsorption capacity of all studied dyes is reported in Table 3. The foam ternary composite PUF/diatomite/dispersed mwcnts has the highest adsorption capacity for these dyes, followed by PUF/agglomerated mwcnts, and then PUF/dispersed mwcnts. Langmuir adsorption isotherms are most consistent with equilibrium data.
Eosin B is an Eosin, a compound. Eosin B is an odorless green to reddish brown solid. Eosin b is an organic sodium salt, which is a disodium salt of eosin b diphenol. It has the function of fluorescent dye and histological dye. It contains an eosin b (2 -) A red fluorescein dye used as a histological dye. It may have cytotoxicity, mutagenicity and inhibition of some mitochondrial functions.
