Skip to Content
Merck
All Photos(2)

Key Documents

View All Documentation

212954

Sigma-Aldrich

Eosin B

Dye content 95 %

Synonym(s):

Acid Red 91

Sign Into View Organizational & Contract Pricing
All Photos(2)

About This Item

Empirical Formula (Hill Notation):
C20H8Br2N2O9
CAS Number:
56360-46-4
Molecular Weight:
580.09
Colour Index Number:
45400
MDL number:
MFCD00066762
UNSPSC Code:
12171500
PubChem Substance ID:
24852757
NACRES:
NA.47

form

powder, crystals or chunks

Quality Level

100

composition

Dye content, 95%

mp

275 °C (dec.) (lit.)

solubility

spirit: soluble

λmax

522 nm

ε (extinction coefficient)

≥7000 at 515-521 nm

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

OC(=O)c1ccccc1C2=C3C=C(C(=O)C(Br)=C3Oc4c(Br)c(O)c(cc24)[N+]([O-])=O)[N+]([O-])=O

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)

InChI key

YDIYPOHFEIEJPE-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
49996PHV
49996PH
00207PD
07505PU
11219JN

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Customers Also Viewed

Slide 1 of 3

1 of 3

Erythrosin extra bluish certified by the Biological Stain Commission

Sigma-Aldrich

E8886

Erythrosin extra bluish

Phloxine B Dye content ≥80 %, certified by the Biological Stain Commission

Sigma-Aldrich

P4030

Phloxine B

Acid Red 1 Dye content 60 %

Sigma-Aldrich

210633

Acid Red 1

Theory and Practice of Histological Techniques (2008)
Estimation of protein using eosin B dye.
Waheed AA and Gupta PD
Analytical Biochemistry, 233, 249-252 (1996)
Replacement of E-cadherin by N-cadherin in the mammary gland leads to fibrocystic changes and tumor formation.
Kotb AM
Breast Cancer Research, 13 (2011)
Lizhen Han et al.
Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology], 46(2), 433-441 (2015-08-15)
An indigenous bacterial strain capable of utilizing 2,4-dichlorophenoxyacetic acid as the sole carbon and energy source was isolated from a soil used for grown wheat with a long-term history of herbicide use in Beijing, China. The strain BJ71 was identified
Juha P Laurila et al.
PloS one, 4(6), e5786-e5786 (2009-06-06)
Inflammatory cell migration characteristic of ischemic damages has a dual role providing the tissue with factors needed for tissue injury recovery simultaneously causing deleterious development depending on the quality and the quantity of infiltrated cells. Extracellular superoxide dismutase (SOD3) has
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service