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E8886

Sigma-Aldrich

Erythrosin extra bluish

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

Synonym(s):

2′,4′,5′,7′-Tetraiodofluorescein disodium salt, Acid Red 51, Iodoeosin

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About This Item

Empirical Formula (Hill Notation):
C20H6I4Na2O5
CAS Number:
16423-68-0
Molecular Weight:
879.86
Colour Index Number:
45430
Beilstein/REAXYS Number:
1443945
EC Number:
240-474-8
MDL number:
MFCD00144257
UNSPSC Code:
12171500
PubChem Substance ID:
24894685
NACRES:
NA.47

product name

Erythrosin extra bluish, certified by the Biological Stain Commission

grade

certified by the Biological Stain Commission

Quality Level

200

form

powder

composition

Dye content, ≥80%

pH

6.4 (30.3 °C)

mp

315 °C

solubility

water: 1 mg/mL, clear

density

0.625-0.731 g/cm3 at 30.1 °C

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[Na+].[Na+].[O-]c1c(I)cc2c(Oc3c(I)c([O-])c(I)cc3C24OC(=O)c5ccccc45)c1I

InChI

1S/C20H8I4O5.2Na/c21-11-5-9-17(13(23)15(11)25)28-18-10(6-12(22)16(26)14(18)24)20(9)8-4-2-1-3-7(8)19(27)29-20;;/h1-6,25-26H;;/q;2*+1/p-2

Inchi Key

RAGZEDHHTPQLAI-UHFFFAOYSA-L

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General description

Erythrosin extra bluish is soluble in ethanol and water. It is a brown powder, with a pH range of 2.5 to 4. It is used in color filters, light emitting diodes, cosmetics and hair dyes. It has been used in many biological applications such as, detecting gene expression, treating age related macular degeneration, diabetes and obesity.

Suitability

Certified for use in the Jackson stain for plant anatomy; counterstain for alum hematoxylin; Kreyberg′s method for keratin and mucus.

pictograms

Exclamation markEnvironment
GHS07,GHS09

signalword

Warning

hcodes

H302,H411

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 2

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

359.6 °F - closed cup

flash_point_c

182 °C - closed cup

ppe

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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R W Sabnis.
Handbook of Biological Dyes and Stains: Synthesis and Industrial Applications, 544-544 (2010)
R W Sabnis.
Handbook of Acid-Base Indicators (2007)
Vagner Roberto Batistela et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 79(5), 889-897 (2011-05-10)
Xanthenes form to an important class of dyes which are widely used. Most of them present three acid-base groups: two phenolic sites and one carboxylic site. Therefore, the pKa determination and the attribution of each group to the corresponding pKa
Chueh-Pin Chen et al.
Photochemistry and photobiology, 88(3), 570-576 (2012-01-31)
The growing resistance to antibiotics has rendered antimicrobial photodynamic inactivation (PDI) an attractive alternative treatment modality for infectious diseases. Chitosan (CS) was shown to further potentiate the PDI effect of photosensitizers and was therefore used in this study to investigate
Laura Carmen Apostol et al.
Biodegradation, 23(5), 725-737 (2012-03-23)
Biodegradation of a xanthene dyes was investigated for the first time using anaerobic granular sludge. On a first screening, biomass was able to decolorize, at different extents, six azo dye solutions: acid orange 7, direct black 19, direct blue 71
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