Alizarine 97% (dye content), Sigma-Aldrich®
Supplier: SIGMA-ALDRICH MICROSCOPY
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Danger
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Synonyms:
Alizarin, 1,2-Dihydroxy-9,10-anthraquinone, 1,2-Dihydroxy-9,10-anthracenedione, 1,2-Dihydroxyanthraquinone
M-Clarity™ quality level = MQ200
Alizarin has been used as a biological stain to dye cotton fabrics and is used as standard in UV-visible spectrophotometer.
Alizarin (1, 2-dihydroxyanthraquinone) is an anthraquinone dye and acts as a main chromophore of madder dye. It is used as a dye in the production of lake pigments. Alizarin is a key constituent in extracts of roots of various members of rubiaceae, morinda, gallium, oldenlandia families. It is used a diagnostic assay manufacturing, hematology, histology.
Formula:
C₁₄H₈O₄ MW: 240,22 g/mol Boiling Pt: 430 °C (1013 hPa) Melting Pt: 279,..283 °C Density: 1,54 g/cm³ (20 °C) Storage Temperature: RT |
MDL Number:
MFCD00001201 CAS Number: 72-48-0 EINECS: 200-782-5 Merck Index: 13,00246 |
Specification Test Results
Infrared spectrum | Conforms to Structure |
Wavelength c = 0.01 g/L; 0.1 N Sodium Hydroxide | 606 - 612 nm |
Extinction Coefficient | ≥13000 |
Wavelength | 227 - 233 nm |
Carbon | 67.6 - 72.5 % |
TLC | Consistent with Past Lots |
Solubility (Turbidity) | Clear to Turbid |
Solubility (Colour) | Purple to Very Dark Purple |
Visual Interval pH 5.5 = Yellow | Pass |
Visual Interval pH 6.8 = Red | Pass |
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