Eosin Y/ Acid Red 87 Cas 17372-87-1

Appearance: Reddish
Packaging: 25kg/bag or according to customer requirements.
Sample: Available
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Table of Contents

Eosin Y (Acid Red 87) Technical Specifications

Basic Parameters

Parameter Specification Eosin B Comparison Fluorescein Comparison
CAS Number 17372-87-1 548-26-5 2321-07-5
Molecular Formula C20H6Br4Na2O5 C20H6Br2N2Na2O9 C20H12O5
Absorption Max 515-518 nm 514-517 nm 494 nm
pH Stability 4.0-6.0 3.5-5.5 6.5-8.0

Key Characteristics

  • Water solubility: ≥50 mg/mL (20°C)
  • Certified purity: ≥95% (HPLC)
  • Storage conditions: 2-8°C in amber glass
  • Certifications: ISO 9001, REACH, FDA 21 CFR 73.3110

Industrial & Scientific Applications

Histological Staining

  • Nuclear counterstain in H&E staining protocols
  • Cytoplasmic staining for epithelial cells
  • Collagen visualization in connective tissues

Biomedical Research

  • Apoptosis detection via fluorescence microscopy
  • Cell viability assays (0.1-0.5% w/v solutions)
  • Flow cytometry surface marker analysis

Industrial Uses

  • Textile dyeing (silk/wool protein fibers)
  • Ink formulations for security printing
  • Laser dye component (520-550 nm range)

Optimal Usage Protocols

Histology Lab Procedure

  1. Prepare 1% alcoholic solution (70% ethanol)
  2. Stain sections for 2-3 minutes
  3. Differentiate in 70% ethanol + 1% HCl
  4. Dehydrate through ethanol series

Textile Dyeing Parameters

Fiber Type Temperature Dye Concentration Fixation Method
Silk 60-70°C 0.5-2% owf Acetic acid bath
Wool 80-85°C 1-3% owf Chromium mordant

Documented Use Cases

Case Study 1: Diagnostic Lab Optimization

  • Client: European Pathology Network (EPN)
  • Challenge: Inconsistent H&E staining results
  • Solution: Standardized Eosin Y formulation
  • Outcome: 40% reduction in repeat staining

Case Study 2: Textile Manufacturing

  • Client: Asian Silk Co., Ltd.
  • Challenge: Fading in luxury fabric lines
  • Solution: Mordant-modified Eosin Y
  • Result: 5x improved washfastness

Case Study 3: Biotech Research

  • Client: US Cancer Research Center
  • Requirement: High-purity apoptosis marker
  • Implementation: HPLC-validated batches
  • Achievement: 99% assay reproducibility

Technical Consultation & Ordering

Product Options

Package Purity Quantity Lead Time
Lab Grade ≥95% 25g-1kg 3-5 days
Research Grade ≥99% 100g-5kg 7-10 days

Contact Our Experts

Email: info@vivalr.com
Tel: (86) 15866781826

Request Custom Formulation

  • Solvent-based preparations
  • Buffered aqueous solutions
  • GMP-grade manufacturing
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