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195243

Sigma-Aldrich

Naphthol Blue Black

Dye content 80 %

Synonym(s):

Acid Black 1, Amido Black 10B, Buffalo Black NBR

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About This Item

Empirical Formula (Hill Notation):
C22H14N6Na2O9S2
CAS Number:
1064-48-8
Molecular Weight:
616.49
Colour Index Number:
20470
Beilstein:
5374263
EC Number:
213-903-1
MDL number:
MFCD00004017
UNSPSC Code:
12171500
PubChem Substance ID:
24851681
NACRES:
NA.47

form

powder

Quality Level

200

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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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
GHS07

Signal Word

Warning

Hazard Statements

H317

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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Certificates of Analysis (COA)

Lot/Batch Number
SHBQ5847
MKCK0255
MKCF5416
MKBZ9250V
MKBW9603V

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Photoelectrochemical degradation of naphthol blue black diazo dye on WO3 film electrode
Luo J and Hepel M
Electrochimica Acta, 46(19), 2913-2922 (2001)
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)
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)
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)
Alok Mittal et al.
Environmental science and pollution research international, 20(1), 260-269 (2012-03-13)
PURPOSE AND AIM: Amido Black 10B is an azo dye with very high toxicity. It is now established that the dye damages the reparatory system of humans and also causes skin and eye irritations. It is therefore considered worthwhile to
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