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Eosin B (C.I. 45400), 10 g, glass

for microscopy
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4',5'-Dibromo-2',7'-dinitrofluorescein-disodium salt, Eosin scarlet, Eosin bluish
Empirical formula C20H6Br2N2Na2O9
Molar mass (M) 624,09 g/mol
Melting point (mp) 310 °C
WGK 1
CAS No. [548-24-3]
EG-Nr. 208-943-1

Usual concentration 0.5–2.0 %. Excitation maximum: 525 nm. Emission maximum: 545 nm

Like eosin Y used as a plasma stain, e.g. for hematoxylin-eosin (H&E) staining. Soluble in water and ...
Product details
Type analysis

€18.20/Pack Qty. 

excl. VAT. | 10 g per Pack Qty.

Art. No. 0306.1

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Product details



Eosin B (C.I. 45400) for microscopy

Like eosin Y used as a plasma stain, e.g. for hematoxylin-eosin (H&E) staining. Soluble in water and ethanol.



Technical Information
Absorption max. 510-530 nm  
Colour conversion colourless - pink fluorescent  
Transition range pH 1,7 – 1,8  
Usage note for additional info 0.5–2.0 % in water or ethanol  
Eosin B (C.I. 45400)
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Order No. Pack Qty. Pack. Price Quantity
0306.1 10 g glass €18.20
0306.2 25 g glass €29.60
0306.3 50 g glass €46.15
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General information

Indicators and Dyes

Carl ROTH offers many indicators and dyes of high purity, which can be used in special applications.

Analysis certificates

You can search for and download your certificate of analysis for the selected product here. Please provide your batch number.
The following analysis certificates have been found:

Type analysis

Appearancedark red powder  
Maximum absorption510-530 nm  

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