1.15924
Nigrosine (C.I. 50420)
water-soluble for microscopy Certistain®
Synonym(s):
Nigrosine (C.I. 50420)
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About This Item
Quality Segment
form
solid
pH
10 (20 °C, 10 g/L in H2O)
solubility
10 g/L
bulk density
750 kg/m3
εmax
200-300 at 570-580 nm in 50% ethanol at 0.025 g/L
application(s)
diagnostic assay manufacturing
hematology
histology
storage temp.
2-30°C
General description
The dry dye Nigrosin (C.I. 50420) water-soluble for microscopy Certistain®, is used for the preparation of a staining solution for the visualization of capsule (negative capsule staining) in bacteriological material of human origin. As a Certistain® dye it is chemically quality-certified according to highest standards and strict specifications. As an IVD product and CE registered, it can be used hassle-free in diagnostics and laboratory accreditations. For more details, please see instructions for use (IFU). The IFU can be downloaded from this webpage.
Analysis Note
Identity
- sodium:
passes test
- UV/VIS-Spectrum: passes test
Absorption maximum λ max (ethanol 50 %): 570 - 580 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.025 g/l; ethanol 50 %): 200 - 300
TLC-Test: passes test
Loss on drying (110 °C): ≤ 15 %
Suitability for microscopy: passes test
- sodium:
passes test
- UV/VIS-Spectrum: passes test
Absorption maximum λ max (ethanol 50 %): 570 - 580 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.025 g/l; ethanol 50 %): 200 - 300
TLC-Test: passes test
Loss on drying (110 °C): ≤ 15 %
Suitability for microscopy: passes test
Legal Information
CERTISTAIN is a registered trademark of Merck KGaA, Darmstadt, Germany
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_c
Not applicable
flash_point_f
Not applicable
Regulatory Information
监管及禁止进口产品
This item has
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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