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EOSIN B

EOSIN B Structure
EOSIN B structure
CAS No.
56360-46-4
Chemical Name:
EOSIN B
Synonyms
EOSIN B;EOSIN BN;CI 45400;EOSIN RED;CAESAR RED;SAFFROSINE;ACID RED 91;CI NO 45400;EOSIN BLUISH;IMPERIAL RED
CBNumber:
CB1309229
Molecular Formula:
C20H8Br2N2O9
Molecular Weight:
580.09
MDL Number:
MFCD00066762
MOL File:
56360-46-4.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-05-20 15:44:34
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EOSIN B Properties

Melting point 275 °C (dec.)(lit.)
Boiling point 663.6±55.0 °C(Predicted)
Density 2.27±0.1 g/cm3(Predicted)
storage temp. room temp
solubility soluble
form Powder
pka 5.98±0.20(Predicted)
Colour Index 45400
color Orange
PH Range 1.4(colourless)-2.4(pink fluoresc.)
λmax 522 nm
ε(extinction coefficient) ≥7000 at 515-521nm
Major Application diagnostic assay manufacturing
hematology
histology
InChI 1S/C20H8Br2N2O9/c21-14-16(25)11(23(29)30)5-9-13(7-3-1-2-4-8(7)20(27)28)10-6-12(24(31)32)17(26)15(22)19(10)33-18(9)14/h1-6,25H,(H,27,28)
InChIKey YDIYPOHFEIEJPE-UHFFFAOYSA-N
SMILES OC(=O)c1ccccc1C2=C3C=C(C(=O)C(Br)=C3Oc4c(Br)c(O)c(cc24)[N+]([O-])=O)[N+]([O-])=O
CAS DataBase Reference 56360-46-4
FDA UNII OMS4XQD1T0
UNSPSC Code 12171500
NACRES NA.47

SAFETY

Risk and Safety Statements

PPE Eyeshields, Gloves, type N95 (US)
Hazard Codes  Xn
Risk Statements  22-21/22
Safety Statements  22-24/25-36/37
WGK Germany  3
HS Code  32041200
Storage Class 11 - Combustible Solids

EOSIN B price More Price(28)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 212954 Eosin B Dye content 95% 56360-46-4 25g $80.5 2026-04-30 Buy
Sigma-Aldrich 45260 Eosin B for microscopy (Fl., Hist.), adsorption and fluorescent indicator 56360-46-4 25g $130 2021-12-16 Buy
Sigma-Aldrich 45260 Eosin B for microscopy (Fl., Hist.), adsorption and fluorescent indicator 56360-46-4 100g $347 2021-12-16 Buy
Usbiological 237513 Eosin B Spirit Soluble 56360-46-4 25g $192 2026-06-03 Buy
Usbiological 237513 Eosin B Spirit Soluble 56360-46-4 100g $297 2026-06-03 Buy
Product number Packaging Price Buy
212954 25g $80.5 Buy
45260 25g $130 Buy
45260 100g $347 Buy
237513 25g $192 Buy
237513 100g $297 Buy

EOSIN B Chemical Properties, Uses, Production

Chemical Properties

orange powder

Uses

diagnostic assay manufacturing
hematology
histology

Definition

ChEBI: A C-nitro compound which consists of a fluorescein skeleton substituted by bromo groups at positions 4 and 5 and nitro groups at positions 2 and 7.

EOSIN B synthesis

596-03-2
56360-46-4
Synthesis of EOSIN B from 4',5'-Dibromofluorescein

EOSIN B Preparation Products And Raw materials

Raw materials

2-(2,4-Dihydroxybenzoyl)benzoic acid 4',5'-Dibromofluorescein Solvent Red 43 Fluorescein Resorcinol
Phthalic anhydride

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Preparation Products

EOSIN B Suppliers

Global Suppliers ( 49)
Supplier Tel Email Country ProdList Advantage
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 4006356688 18621169109 market03@meryer.com China 40202 62
3B Pharmachem (Wuhan) International Co.,Ltd. 18930552037 3bsc@sina.com China 15813 69
Energy Chemical 400-0056266 sales8178@energy-chemical.com China 44850 61
Tianjin heowns Biochemical Technology Co., Ltd. 400 638 7771 sales@heowns.com China 14412 57
Spectrum Chemical Manufacturing Corp. 021-021-021-67601398-809-809-809 15221380277 marketing_china@spectrumchemical.com China 9643 60
Thermo Fisher Scientific 800-810-5118 cnchemical@thermofisher.com China 17752 75
9ding chemical ( Shanghai) Limited 4009209199 sales@9dingchem.com China 22497 55
Aikon International Limited 025-58851090 13913916777 sales01@aikonchem.com China 15947 58
BOC Sciences +1-631-485-4226 inquiry@bocsci.com United States 19935 58
Supplier Advantage
J & K SCIENTIFIC LTD. 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 62
3B Pharmachem (Wuhan) International Co.,Ltd. 69
Energy Chemical 61
Tianjin heowns Biochemical Technology Co., Ltd. 57
Spectrum Chemical Manufacturing Corp. 60
Thermo Fisher Scientific 75
9ding chemical ( Shanghai) Limited 55
Aikon International Limited 58
BOC Sciences 58

EOSIN B Spectrum

EOSIN B(56360-46-4)FT-IREOSIN B(56360-46-4)RamanEOSIN B(56360-46-4)IR

56360-46-4 (EOSIN B) Related Search:

2-Bromo-4-nitrophenol EOSIN B 3-Bromostyrene Azure Ⅱ-eosin,AZURE II-EOSIN FOR MICROSCOPY 3-Bromopropylamine hydrobromide
2-Bromo-4-nitroanisole 2-Amino-6-bromophenol 4-Bromo-1-butene Fluorescein 2-Bromo-6-nitrophenol
2-Bromo-2-butene, mixture of cis and trans Giemsa stain EOSIN B 4-Nitrosoresorcinol 2-Bromo-4-methyl-6-nitrophenol
3-Bromo-5-nitrotoluene 4-Amino-2-bromophenol 5-Methoxy-2-nitrophenol

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4,5-DIBROMO-2,7-DINITROFLUORESCEIN 4',5'-DIBROMO-2',7'-DINITROFLUORESCEIN DISODIUM SALT 4,5-DIBROMO-2,7-DINITROFLUORESCEIN DISODIUM SALT ACID RED 91 EOSIN B EOSIN BA OR BN EOSIN B DISODIUM SALT EOSIN BLUE SHADE EOSIN BLUISH EOSIN BLUISH, B STANDS FOR ''BLUISH'' EOSIN BN EOSIN B, WATER SOLUBLE EOSIN RED EOSIN SCARLET CI NO 45400 2,7-dinitro-4,5-dibromofluorescein CI 45400 IMPERIAL RED LABOTEST-BB LT00847322 CAESAR RED EOSIN B FREE ACID EOSIN B, SPIRIT SOLUBLE (C.I. 45400) EOSIN B SPIRIT SOLUBLE 90% spiritsoluble90% Eosin B, spirit soluble, pure Spiroisobenzofuran-1(3H),9-9Hxanthen-3-one, 4,5-dibromo-3,6-dihydroxy-2,7-dinitro- C.I. 45400)(EOSIN B, SPIRIT SOLUBLE (C.I. 45400) eosin bluish, spirit soluble Eosin B,pure,spirit soluble eosin b diphenol 4',5'-dibromo-3',6'-dihydroxy-2',7'-dinitrospiro[2-benzofuran-3,9'-xanthene]-1-one SAFFROSINE SAFFROSINE DISODIUM SALT 4',5'-Dibromo-3',6'-dihydroxy-2',7'-dinitro-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one Eosin B Dye content Eosine B (alcohol soluble) 56360-46-4 C20H8Br2N2O9 Hematology and Histology Hematology Stains