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330000

Rose bengal

Name: Rose bengal
Brand: ALDRICH

Dye content 95 %, ≥96% (HPLC)

Synonym(s):

4,5,6,7-Tetrachloro-2′,4′,5′,7′-tetraiodofluorescein disodium salt, Acid Red 94, Bengal Rose B sodium salt, Rose Bengal sodium salt

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About This Item

Empirical Formula (Hill Notation):

C₂₀H₂Cl₄I₄Na₂O₅

CAS Number:

632-69-9

Molecular Weight:

1017.64

UNSPSC Code:

12171500

NACRES:

NA.47

PubChem Substance ID:

24859827

EC Number:

211-183-3

Beilstein/REAXYS Number:

3645857

MDL number:

MFCD00005043

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Properties

Quality Level

200

assay

≥96% (HPLC)

form

solid

composition

Dye content, 95%

technique(s)

titration: suitable

color

red to brown

ε (extinction coefficient)

≥ 3000 at 350-354 nm, ≥12000 at 311-315 nm, ≥32000 at 262-266 nm, ≥32000 at 513-517 nm, ≥98000 at 546-550 nm at 0.04 g/L (H2O + 1ml 1% Na2CO3)

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[Na+].[Na+].[O-]C(=O)c1c(Cl)c(Cl)c(Cl)c(Cl)c1C2=C3C=C(I)C(=O)C(I)=C3Oc4c(I)c([O-])c(I)cc24

InChI

1S/C20H4Cl4I4O5.2Na/c21-10-8(9(20(31)32)11(22)13(24)12(10)23)7-3-1-5(25)16(29)14(27)18(3)33-19-4(7)2-6(26)17(30)15(19)28;;/h1-2,29H,(H,31,32);;/q;2*+1/p-2

InChI key

UWBXIFCTIZXXLS-UHFFFAOYSA-L

Description

General description

Rose Bengal is used to stain dead and degenerating cells and mucus.

Rose Bengal is a red or rose color dye and is anionic in nature. It is a 4,5,6,7-tetrachloro 2′,4′,5′,7′-tetraiodo derivative of fluorescein. It is widely used to detect damage to the ocular surface epithelium in ocular surface diseases such as dry eye and herpetic keratitis. Rose Bengal has mild antiviral potency.

Application

Rose Bengal has been used to evaluate acrosome integrity. It has also been used to initiate photothrombotic occlusion in blood.

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Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Certificates of Analysis (COA)

Lot/Batch Number

0000517610

0000453885

0000323961

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Global Trade Item Number

SKU	GTIN
330000-1G	04061826725764
330000-5G	04061835345687