Quinizarin green 95% (dye content), Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY
Warning

Synonyms: 1,4-Bis(p-tolylamino)anthracene-9,10-dione, Solvent Green 3, 1,4-Bis(p-toluidino)-9,10-anthraquinone, D and C Green No. 6

M-Clarity™ quality level = MQ200

211982-50G
211982-50GEA 129 EUR
211982-50G
Quinizarin green 95% (dye content), Sigma-Aldrich®
1,4-Bis(p-toluidino)-9,10-anthraquinone

Solvent Green 3, also known as Quinizarine Green SS (CI 61565) is an anthraquinone derivative. It is a green dye that imparts its colour to materials. Solvent Green 3 is made by condensing either leucoquinizarin or a mixture of leucoquinizarin and quinizarin with two moles of p-toluidine in the presence of boric acid.

Formula: C₂₈H₂₂N₂O₂
MW: 418.496 g/mol
Melting Pt: 220...221 °C (lit.)
MDL Number: MFCD00001195
CAS Number: 128-80-3
EINECS: 204-909-5
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Specification Test Results

Appearance (Form) Powder
Infrared spectrum Conforms to Structure
C=0.01 G/L Acetone 624 - 644 nm
Extinction Coefficient ≥14000
Wavelength 394 - 414 nm
Extinction Coefficient, In Acetone ≥6000
Carbon 76.3 - 84.4 %
Nitrogen 6.3 - 7.0 %
TLC Consistent with Past Lots
Solubility (Turbidity) Turbid
Solubility (Color) c = 1%, Pyridine Dark Blue to Very Dark Blue and Dark, Blue-Green to Very Dark Blue-Green

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