Alizarine 97% (dye content), Sigma-Aldrich®

Supplier: SIGMA-ALDRICH MICROSCOPY
Danger

Synonyms: Alizarin, 1,2-Dihydroxy-9,10-anthraquinone, 1,2-Dihydroxy-9,10-anthracenedione, 1,2-Dihydroxyanthraquinone

M-Clarity™ quality level = MQ200

122777-100G 122777-500G
122777-100GEA 145 EUR
122777-100G 122777-500G
Alizarine 97% (dye content), Sigma-Aldrich®
Alizarine

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
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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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