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Sigma-Aldrich

Rose bengal

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

Synonyme(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

Formule empirique (notation de Hill):
C20H2Cl4I4Na2O5
Numéro CAS:
Poids moléculaire :
1017.64
Numéro C.I. (Colour Index):
45440
Numéro Beilstein :
3645857
Numéro CE :
Numéro MDL:
Code UNSPSC :
12171500
ID de substance PubChem :
Nomenclature NACRES :
NA.47

Qualité

certified by the Biological Stain Commission

Forme

powder

Composition

Dye content, ≥80%

Couleur

dark violet

Solubilité

H2O: 1 mg/mL

λmax

548 nm

ε (coefficient d'extinction)

≥90000 at 546-550 nm at 0.008 g/L

Application(s)

diagnostic assay manufacturing
hematology
histology

Température de stockage

room temp

Chaîne SMILES 

[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

Clé InChI

UWBXIFCTIZXXLS-UHFFFAOYSA-L

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Description générale

Rose Bengal is the sodium salt of tetraiodotetrachlorouorescein, C20H2O5I4Cl4Na2. It is an anionic water-soluble xanthene dye.

Application

Rose bengal has several microbilogical staining applications including:
  • Conn′s technique for bacteria in soil and Kreyberg′s stain for keratin and mucus
  • counterstaining hematoxylin
  • staining cellular inclusions, together with Bismark brown



Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Gloves, type N95 (US)


Certificats d'analyse (COA)

Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".

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