Description

Ethyl Eosin is a synthetic, water-soluble red dye belonging to the xanthene class of compounds. It is valued for its strong fluorescence and vivid staining properties, making it a critical tool in biological and histological research. This product is essential for laboratories and manufacturers in the life sciences, diagnostics, and specialized chemical synthesis sectors seeking reliable, high-purity staining reagents.

Application

• Histological Staining: Used as a counterstain in combination with hematoxylin (H&E staining) for visualizing cytoplasmic structures, collagen, and muscle fibers in tissue samples.
• Fluorescence Microscopy: Employed as a fluorescent tracer or tag in cell biology and biomedical research due to its distinct emission profile.
• Diagnostic Reagents: A key component in the formulation of certain clinical stains and diagnostic kits for pathological examination.
• Textile and Ink Dyeing: Serves as a colorant for specialized applications in textiles, inks, and pigments, though primarily in research-grade contexts.
• Biocompatible Marker: Utilized in viability assays and as a non-toxic marker for tracking in certain biological and environmental studies.

Basic Information

Product Name	Ethyl Eosin
CAS No.	21514-87-4
Molecular Formula	C22H11Br4NaO5
Molecular Weight	691.93 g/mol
Synonyms	Eosin Y, Ethyl Ester; Eosin Yellowish; Acid Red 87; C.I. 45380; Bromoeosine; 2',4',5',7'-Tetrabromofluorescein ethyl ester; Ethyl eosin Y; Eosin Y ethyl ester
EINECS	244-438-5

Quality Control

Our Ethyl Eosin is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including identity confirmation, purity assay, and impurity profiling, to ensure it meets the high standards required for research and diagnostic applications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at room temperature (15-25°C). Keep the container tightly sealed to protect from moisture.

Specification

Item	Specification
Appearance	Red to brownish-red powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0 %
Solubility (in Water)	Clear, red solution
Fluorescence	Characteristic emission under standard conditions

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.