Rose Bengal ≥80% (dye content), certified by the Biological Stain Commission, Sigma-Aldrich®
Supplier: SIGMA-ALDRICH MICROSCOPYTotal Ratings: 0
Avg. Ratings: 0.0 out of 5
Synonyms:
Acid red 94
, Sodium 4,5,6,7-tetrachloro-2',4',5',7'-tetraiodo-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-3',6'-bis(olate)
, CI 45440
, Food Red No. 105
, Aniline Rose
, Rose Bengal sodium
M-Clarity™ quality level = MQ100
Rose bengal,certified by the Biological Stain Commission, Dye content ≥80 % (4,5,6,7-Tetrachloro-2',4',5',7'-tetraiodofluorescein disodium salt; Acid Red 94; Bengal Rose B sodium salt; Rose Bengal sodium salt).
- 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
Rose Bengal is the sodium salt of tetraiodotetrachlorouorescein, C20H2O5I4Cl4Na2. It is an anionic water-soluble xanthene dye.
Formula:
C₂₀H₂Cl₄I₄O₅Na₂ MW: 1017.63 g/mol Storage Temperature: Room Temperature |
MDL Number:
MFCD00151169 CAS Number: 632-69-9 EINECS: 211-183-3 |
Specification Test Results
Appearance (Form) | Powder |
Infrared spectrum | Conforms to Structure |
Wavelength, C = 0.008 g/L; Water + 1 ml of 1% w/v Sodium Carbonate (Na₂CO₃) | 546 - 550 nm |
Extinction Coefficient | ≥90000 |
Biological Stain Commission, Commission Certified Number: | Pass |
Dye Content | ≥80% |
Solubility (Turbidity), c = 1 mg/ml, H₂O | Clear to Slightly Hazy |
Solubility (Colour) | Light Red to Dark Red and Pink |
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