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MilliporeSigma

1.04139

Sigma-Aldrich

Nigrosine (C.I. 50420)

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About This Item

CAS Number:
MDL number:
UNSPSC Code:
41116130
NACRES:
NA.21

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pH

10 (20 °C, 10 g/L in H2O)

Quality Level

solubility

10 g/L

bulk density

750 kg/m3

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

2-30°C

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1 of 4

This Item
1.04133439251.04177
solubility

10 g/L

solubility

50 g/L

solubility

-

solubility

200 g/L

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

Quality Level

200

Quality Level

200

Quality Level

100

Quality Level

200

storage temp.

2-30°C

storage temp.

2-30°C

storage temp.

room temp

storage temp.

2-30°C

pH

10 (20 °C, 10 g/L in H2O)

pH

10 (20 °C, 10 g/L in H2O)

pH

-

pH

2.9 (25 °C, 10 g/L in H2O)

bulk density

750 kg/m3

bulk density

400 kg/m3

bulk density

-

bulk density

200 kg/m3

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.

Application

water-soluble for microscopy Certistain®

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

Legal Information

CERTISTAIN is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


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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