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Safety Information

212954

Sigma-Aldrich

Eosin B

Dye content 95 %

Synonym(s):

Acid Red 91

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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

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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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

212954-25G:
212954-VAR:
212954-100G:
212954-BULK:

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Certificates of Analysis (COA)

Lot/Batch Number
49996PHV
49996PH
00207PD
11219JN
03419EZ

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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)
Estimation of protein using eosin B dye.
Waheed AA and Gupta PD
Analytical Biochemistry, 233, 249-252 (1996)
Theory and Practice of Histological Techniques (2008)
Im-Hee Jung et al.
Journal of periodontal & implant science, 41(1), 10-16 (2011-03-12)
Avulsed tooth can be completely recovered, if sound periodontal ligament (PDL) of tooth is maintained. Although a lot of storage solutions have been explored for the better storage of avulsed tooth, there is a shortcoming that the preservation time is
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
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