1,8-dihydroxy-3-methyl-9,10-anthraquinone CAS No.481-74-3 / Cat No.EBD677043
4,5-dihydroxy-2-methylanthraquinone
1,8-dihydroxy-3-methyl-9,10-anthraquinone
C.I. Natural Yellow 23
Chrysophanic acid
1,8-Dihydroxy-3-methyl-anthraquinone
1,8-dihydroxy-3-methylanthracene-9,10-dione
Chrysophanol
C.I. 75400
C.I. Natural Yellow 23
Chrysophanic acid
1,8-Dihydroxy-3-methyl-anthraquinone
1,8-dihydroxy-3-methylanthracene-9,10-dione
chrysophanic acid
chrysophanol
1,8-Dihydroxy-3-methylanthraquinone
Properties
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Appearance:
yellow crystalline solid or brown powder
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Density:
1.476 g/cm3
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Melting point:
194-198 °C
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Boiling point:
489.495 °C at 760 mmHg
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Flashing point:
263.939 °C
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Solubility:
chloroform: soluble1%
Safety Information
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Symbol:
-
Signal words:
Warning -
Hazard statements:
H315 Causes skin irritation.
H319 Causes serious eye irritation.
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Precautionary statements:
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
NMR Spectrum
Prediction： 1H NMR (CDCl3, 500 MHz), delta: 7.09 (1 H, br s, H-2), 7.64 (1 H, br s, H-4), 7.81 (1 H, br d, J = 7.5 Hz, H-5), 7.67 (1 H, br d, J = 8.0 Hz, H-6), 7.28 (1 H, br d, J = 8.5 Hz, H-7), 2.47 (3H, s, -CH3), 12.00 (1 H, s, -OH), 12.12 (1 H, s, -OH);
1H NMR
13C NMR
