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Merck
CN

53019

Eosin Y disodium salt

analytical standard

Synonym(s):

Bromofluorescein, 2′,4′,5′,7′-Tetrabromofluorescein disodium salt, Acid Red 87, Bromo acid J. TS, XL, or XX, Bronze Bromo ES, D&C;Red No. 22, Eosin yellowish

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About This Item

Empirical Formula (Hill Notation):
C20H6Br4Na2O5
CAS Number:
17372-87-1
Molecular Weight:
691.85
EC Number:
241-409-6
PubChem Substance ID:
329757909
UNSPSC Code:
85151701
Beilstein/REAXYS Number:
3586809
Colour Index Number:
45380
MDL number:
MFCD00005040

Key Documents

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InChI

1S/C20H8Br4O5.2Na/c21-11-5-9-13(7-3-1-2-4-8(7)20(27)28)10-6-12(22)17(26)15(24)19(10)29-18(9)14(23)16(11)25;;/h1-6,25H,(H,27,28);;/q;2*+1/p-2

InChI key

SEACYXSIPDVVMV-UHFFFAOYSA-L

SMILES string

[Na+].[Na+].[O-]C(=O)c1ccccc1C2=C3C=C(Br)C(=O)C(Br)=C3Oc4c(Br)c([O-])c(Br)cc24

grade

analytical standard

assay

≥98.0% (HPLC)

shelf life

limited shelf life, expiry date on the label

technique(s)

HPLC: suitable, gas chromatography (GC): suitable

impurities

≤4.0% water

application(s)

cleaning products
cosmetics
food and beverages
personal care

format

neat

Quality Level

100

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General description

Eosin Y disodium salt is a synthetic dye, which is widely used as a photoredox catalyst in organic synthesis.

Application

Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

Analysis Note

contains up to 4% methanol (detected by H-NMR)

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H317,H319

Hazard Classifications

Eye Irrit. 2 - Skin Sens. 1

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

376.9 °F - Pensky-Martens closed cup

flash_point_c

191.6 °C - Pensky-Martens closed cup

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Certificates of Analysis (COA)

Lot/Batch Number
BCBV9250
BCBS2178V

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Synthetic applications of eosin Y in photoredox catalysis.
Hari PD and Konig B
Chemical Communications (Cambridge, England), 50(51), 6688-6699 (2014)
Toshihisa Yashiro et al.
Proceedings of the National Academy of Sciences of the United States of America, 111(48), 17212-17217 (2014-11-19)
Males and females are in conflict over genetic transmission in the evolution of parthenogenesis, because it enhances female reproductive output but deprives the males' genetic contribution. For males, any trait that coerces females into sexual reproduction should increase their fitness.
Jeong-Hae Choi et al.
Archives of dermatological research, 306(7), 635-643 (2014-04-15)
The barrier system of the skin not only defends against antigens and harmful substances, but also hinders the permeation of medicines and cosmetics into the dermis. Several strategies have been developed to enhance the absorption ability of skin, including the
Hubert Pausch et al.
PLoS genetics, 10(1), e1004044-e1004044 (2014-01-07)
Genetic variants underlying reduced male reproductive performance have been identified in humans and model organisms, most of them compromising semen quality. Occasionally, male fertility is severely compromised although semen analysis remains without any apparent pathological findings (i.e., idiopathic subfertility). Artificial
Mimi C Sammarco et al.
Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research, 29(11), 2336-2345 (2014-04-23)
Amputation of the digit tip within the terminal phalangeal bone of rodents, monkeys, and humans results in near-perfect regeneration of bone and surrounding tissues; however, amputations at a more proximal level fail to produce the same regenerative result. Digit regeneration
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