Naphthalene black 10B (naphthol blue black, acid black 1) 80% Dye, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY
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195243-100G 195243-25G
195243-100GEA 189 EUR
195243-100G 195243-25G
Naphthalene black 10B (naphthol blue black, acid black 1) 80% Dye, Sigma-Aldrich®
Naphthalene Black 10B (Naphthol Blue Black, Acid Black 1)
Formula: C₂₂H₁₄N₆Na₂O₉S₂
MW: 616.49 g/mol
Storage Temperature: Ambient
MDL Number: MFCD00004017
CAS Number: 1064-48-8
EINECS: 213-903-1
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Specification Test Results

Appearance (Color) Brown to Very Dark Brown and Black
Appearance (Form) Powder
Infrared spectrum Conforms to Structure
Wavelength c = 0.007g/l in H2O 616 - 622 nm
Extinction Coefficient ≥20000
Wavelength 318 - 324 nm
TLC Consistent With Control Conforms
Solubility (Turbidity) Opaque (c = 1mg/ml; H2O) Conforms
Solubility (Color) Dark Blue to Very Dark Blue
Water (by Karl Fischer) ≤10.0 %
Carbon ≥33.4 %
Nitrogen ≥10.6 %

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