Eosin B - adsorption and fluorescent indicator , CAS No.548-24-3

CAS: 548-24-3 Cat. No.: E100233 Molecular Weight: 624.06 Beilstein Registry Number: 4121964 EC Number: 208-943-1 PubChem CID: 26697441
AVAILABLE TO ORDER
GRADE & PURITY adsorption and fluorescent indicator
Synonyms
4′,5′-Dibromo-2′,7′-dinitrofluorescein disodium salt Acid Red 91 Eosin bluish Eosin Scarlet Saffrosine Imperial Red
Storage
Protected from light,Room temperature,Desiccated,Cool
Shipped In
Normal
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Size
Status
Price
Qty
25g
E100233-25g
3
$23.90
100g
E100233-100g
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$75.90
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Why this grade

adsorption and fluorescent indicator for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Protected from light,Room temperature,Desiccated,Cool Ships Normal Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 5 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

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
Specifications & Purity
adsorption and fluorescent indicator
Storage
Protected from light, Room temperature, Desiccated, Cool
Shipped In
Normal
Names and Identifiers
Pubchem Sid504770067
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504770067
WGK Germany 3
PubChem CID 26697441
Molecular Weight 624.06
Beilstein 4121964

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

2 results found

Lot NumberCertificate TypeDateItem
A2217094Certificate of AnalysisOct 29, 2025 E100233
G1915036Certificate of AnalysisMay 06, 2023 E100233
Chemical and Physical Properties
SensitivityMoisture sensitive.Light sensitive
Documents & Articles
Citations of This Product
References
1. Xia Qiu, Ling Wang, Yinggui Zhu.  (2021)  Cathodic electrochemiluminescence behavior of Eosin B and its quenching mechanism by Cr3+.  JOURNAL OF ELECTROANALYTICAL CHEMISTRY,      [PMID:] [10.1016/j.jelechem.2021.115031]
2. Xiu-Fang Yan, Zeng-Ping Chen, Yin-Yin Cui, Yuan-Liang Hu, Ru-Qin Yu.  (2016)  Quantitative generalized ratiometric fluorescence spectroscopy for turbid media based on probe encapsulated by biologically localized embedding.  ANALYTICA CHIMICA ACTA,      [PMID:27126788] [10.1016/j.aca.2016.03.033]
3. Jingfeng Dong, Mei Wang, Pan Zhang, Songqiu Yang, Jianyong Liu, Xueqiang Li, Licheng Sun.  (2011)  Promoting Effect of Electrostatic Interaction between a Cobalt Catalyst and a Xanthene Dye on Visible-Light-Driven Electron Transfer and Hydrogen Production.  Journal of Physical Chemistry C,      [PMID:] [10.1021/jp2040778]
4. Xiaohui Kang, Lanpeng Zhang, Wei Jia, Liang Yang, Changlong Jiang.  (2024)  Visual Detection of Methylglyoxal in Multiple Scenarios via NIR-Excitable Reversible Ratiometric Fluorescent Hydrogel Sensor.  ANALYTICAL CHEMISTRY,      [PMID:39698803] [10.1021/acs.analchem.4c05178]
5. Arif Nawaz, Jalwa Afreeq, Azhar Iqbal, Nisar Ali, Adnan Khan, Haifa Zhai, Rayya Ahmed Al Balushi, Mohammad M. Al-Hinaai, Thuraya Al-Harthy.  (2025)  Carboxymethyl chitosan derived Nx-C integrated with adjacent redox half reactions (MnCoSnO3): A dynamic contender for wastewater decontamination.  INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES,      [PMID:40623569] [10.1016/j.ijbiomac.2025.145757]
Solution Calculators
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