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195243

Sigma-Aldrich

Naphthol Blue Black

Dye content 80 %

Synonym(s):
Acid Black 1, Amido Black 10B, Buffalo Black NBR
Empirical Formula (Hill Notation):
C22H14N6Na2O9S2
CAS Number:
Molecular Weight:
616.49
Colour Index Number:
20470
Beilstein:
5374263
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.47

form

powder

Quality Level

composition

Dye content, 80%

solubility

water: 1 mg/mL, opaque, blue to very deep blue

λmax

618 nm

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[Na+].[Na+].Nc1c(\N=N\c2ccc(cc2)[N+]([O-])=O)c(cc3cc(c(\N=N\c4ccccc4)c(O)c13)S([O-])(=O)=O)S([O-])(=O)=O

InChI

1S/C22H16N6O9S2.2Na/c23-19-18-12(11-17(39(35,36)37)21(22(18)29)27-24-13-4-2-1-3-5-13)10-16(38(32,33)34)20(19)26-25-14-6-8-15(9-7-14)28(30)31;;/h1-11,29H,23H2,(H,32,33,34)(H,35,36,37);;/q;2*+1/p-2/b26-25+,27-24+;;

InChI key

AOMZHDJXSYHPKS-DROYEMJCSA-L

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This Item
391557N9002234176
Naphthol Blue Black Dye content 80 %

Sigma-Aldrich

195243

Naphthol Blue Black

Oil Blue N Dye content 96 %

Sigma-Aldrich

391557

Oil Blue N

Naphthol Blue Black Dye content ~50 %

Sigma-Aldrich

N9002

Naphthol Blue Black

Victoria Blue R Dye content 80 %

Sigma-Aldrich

234176

Victoria Blue R

composition

Dye content, 80%

composition

Dye content, 96%

composition

Dye content, ~50%

composition

Dye content, 80%

solubility

water: 1 mg/mL, opaque, blue to very deep blue

solubility

acetone: 1%, turbid, blue to very deep blue

solubility

water: 1 mg/mL

solubility

ethanol: 1 mg/mL, clear to opaque, blue to purple

λmax

618 nm

λmax

596 nm, 644 nm (2nd)

λmax

617-620 nm in water

λmax

615 nm

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

storage temp.

room temp

storage temp.

room temp

storage temp.

room temp

storage temp.

room temp

General description

Naphthol blue black (NBB) is an textile diazo dye, with high photo- and thermal-stability. Photoelectrochemical degradation of this dye yields colorless quinone as end product. Pure grade of NBB is generally used for dyeing foodstuffs, drugs and cosmetics. It is also used as a protein stain in chromatography and electrophoresis and as a biological stain. Commercial grade of NBB is a widely used textile dye. It is used in dyeing wool, nylon, silk and in textile printing. In addition, it is also employed for coloring of soaps, anodized aluminum and casein, wood stains and writing ink preparation.

Application

Naphthol blue black (NBB) has been used to stain soluble proteins.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Skin Sens. 1B

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Environmental photochemistry on semiconductor surfaces. Visible light induced degradation of a textile diazo dye, naphthol blue black, on TiO2 nanoparticles
Nasr C, et al.
The Journal of Physical Chemistry, 100(20), 8436-8442 (1996)
Synthesis of layered organic--inorganic nanohybrid material: an organic dye, naphthol blue black in magnesium--aluminum layered double hydroxide inorganic lamella
bin H, et al.
Materials Science and Engineering, B, 88(1), 98-102 (2002)
Characteristics of Acaciamangium shoot apical meristems in natural and in vitro conditions in relation to heteroblasty
Hatt, Clemence, et al.
Trees (Berlin, Germany : West), 26(3), 1031-1044 (2012)
Photoelectrochemical degradation of naphthol blue black diazo dye on WO3 film electrode
Luo J and Hepel M
Electrochimica Acta, 46(19), 2913-2922 (2001)
Gyorgy Csako
Methods in molecular biology (Clifton, N.J.), 869, 339-359 (2012-05-16)
Immunoelectrophoresis (IEP) was the first practical method that combined electrophoresis and -immunoprecipitation for identifying and characterizing proteins within complex mixtures. Over the years, IEP has been extended to include a variety of techniques and, as a general name, has been

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