1,8-dihydroxyanthraquinone-3-carboxylic acid CAS No.478-43-3 / Cat No.EBD2049802
4,5-Dihydroxy-2-anthraquinonecarboxylic acid
1,8-dihydroxyanthraquinone-3-carboxylic acid
4,5-dihydroxy-9,10-dioxo-9,10-dihydroanthracene-2-carboxylic acid
4,5-dihydroxy-9,10-dioxo-9,10-dihydroanthracene-2-carboxylate
Rhein
1,8-Dihydroxy-3-Carboxy anthraquinone
4,5-dihydroxy-9,10-dioxo-9,10-dihydroanthracene-2-carboxylic acid
4,5-dihydroxy-9,10-dioxo-9,10-dihydroanthracene-2-carboxylate
rhein
Cassic acid
4,5-Dihydroxyanthraquinone-2-carboxylic acid
Properties
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Appearance:
Yellowish brown solid
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Density:
1.687 g/cm3
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Melting point:
≥300 °C(lit.)
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Boiling point:
597.8 °C at 760 mmHg
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Flashing point:
329.4 °C
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Storage temperature:
2-8°C
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Solubility:
<0.1 g/100 mL at 17 ºC
Safety Information
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Symbol:
-
Signal words:
Warning -
Hazard statements:
H315 Causes skin irritation.
H319 Causes serious eye irritation.
H335 May cause respiratory irritation.
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Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
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 (400 MHz, DMSO): 7.40 (1H, d J=8 Hz), 7.71-7. 76 (2H, m), 7.82 (1 H, t J=8 Hz), 8.11 (1 H, d J=1. 6 Hz)
1H NMR
13C NMR
