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Nigrosin (Water Soluble)

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For Research Use Only | Not For Clinical Use
CATAPB8005036
CAS8005-03-6
Structure
SynonymsC.I. 50420; Acid black 2; Nigrosin
Molecular Weight616.49
Molecular FormulaC22H14N6Na2O9S2
AppearanceDark blue to deep blue to black powder or crystals
Absorption Wavelengthλmax 570 nm
Color Index50420
GradeFor microscopy
Loss On DryingMax. 15% (110 °C)
UsesUsed as a negative stain in place of India ink for spirochetes, bacteria, protozoa and fungi.It is employed as a common biological stain for tissues and cells.
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