Nigrosine, certified by the Biological Stain Commission, Sigma-Aldrich®
Supplier: SIGMA-ALDRICH MICROSCOPY
Synonyms:
Acid Black 2
M-Clarity™ quality level = MQ200
198285-100G
198285-25G
198285-100GEA
97.9
GBP
198285-100G
198285-25G
Nigrosine, certified by the Biological Stain Commission, Sigma-Aldrich®
Nigrosine
Nigrosin,certified by the Biological Stain Commission (Acid black 2; Nigrosin water soluble).
Certified for use in Dorner′s spore stain. Used as a negative stain in place of India ink for spirochetes, bacteria, protozoa and fungi. Used as a negative stain in place of India ink for spirochetes, bacteria, protozoa and fungi.
Storage Temperature:
Room Temperature |
MDL Number:
MFCD00044681 CAS Number: 8005-03-6 |
Specification Test Results
Appearance (Colour) | Black |
Appearance (Form) | Powder or Crystals |
Infrared spectrum | Conforms to Structure |
Wavelength Absorbance | 290 - 300 nm |
Wavelength | 570 - 580 nm |
Absorbance | c = 0.02 g/L in 50% Ethanol |
Biological Stain Commission, Commission Certified Number: | Pass |
Carbon | 40 - 50% Typically |
Nitrogen | 7 - 9% Typically |
TLC, Consistent With Control | Conforms |
Solubility (Turbidity), c = 0.1% in H2O | Clear |
Solubility (Colour) | Dark Purple |
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