Eosin B - ≥90% , CAS No.548-24-3

CAS: 548-24-3 Cat. No.: E100232 Formula: C₂₀H₆N₂O₉Br₂Na₂ Molecular Weight: 624.06 Beilstein Registry Number: 4121964 EC Number: 208-943-1 PubChem CID: 26697441

GRADE & PURITY ≥90%

Synonyms

4′,5′-Dibromo-2′,7′-dinitrofluorescein disodium salt Acid Red 91 | Eosin bluish | Eosin Scarlet | Saffrosine Imperial Red | C.I. 45400 | 4,5-Dibromo-2,7-dinitrofluorescein disodium salt

Storage

Room temperature

Shipped In

Normal

Overview

Eosin B is a fluorescent red dye that is used in microscopy to visualise cytoplasm and proteins like collagen.
Eosin B is an adsorption and fluorescent indicator in microscopy.

Specifications

Synonyms

4′,5′-Dibromo-2′,7′-dinitrofluorescein disodium salt Acid Red 91 | Eosin bluish | Eosin Scarlet | Saffrosine Imperial Red | C.I. 45400 | 4,5-Dibromo-2,7-dinitrofluorescein disodium salt

Specifications & Purity

≥90%

Biochemical and Physiological Mechanisms

Eosin B is a xanthene dye and is also referred to as eosin bluish or erythrosin B. It is used in the Harris stain for Negri bodies. Eosin B is also used in Mayer’s Hemalum as a counterstain for collagen. Eosin B-Azure A are used together for the staining

Storage

Room temperature

Shipped In

Normal

Purity

≥90%

Names and Identifiers

Pubchem Sid

488200811

Pubchem Sid Url

https://pubchem.ncbi.nlm.nih.gov/substance/488200811

Canonical Smiles

[Na+].[Na+].[O-][N+](=O)c1cc2c(c3ccccc3C(=O)[O-])c3cc([N+](=O)[O-])c([O-])c(Br)c3oc2c(Br)c1=O

WGK Germany

3

PubChem CID

26697441

Molecular Weight

624.06

Beilstein

4121964

Chemical and Physical Properties

• Solubility: Soluble in water (390 g/L at 20°C), and ethanol.
• Sensitivity: Moisture sensitive.