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Rhein

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Rhein / CAS : 478-43-3

Appearance The product is brown needle crystal and yellow needle crystal after sublimation. UN -
HS 29189900 DG Class -
Synonyms 9,10-Dihydro-4,5-Dihydroxy-9,10-Dioxoanthracene-2-Carboxylic Acid; 4,5-Dihydroxyanthraquinone-2-Carboxylic Acid; Cassic Acid; 4,5-Dihydroxy-9,10-Dioxo-9,10-Dihydroanthracene-2-Carboxylic Acid; Rheic Acid; Chrysazin-3-Carboxylic Acid; Rhubarb Yellow; 1,8-Dihydroxy-3-Carboxy-9,10-Anthraquinone; Monorhein; 1,8-Dihydroxyanthraquinone-3-Carboxylic Acid; 9,10-Dihydro-4,5-Dihydroxy-9,10-Dioxo-2-Anthracenecarboxylic Acid; 2-Anthracenecarboxylic Acid, 9,10-Dihydro-4,5-Dihydroxy-9,10-Dioxo-; 1,8-Dihydroxy-3-Carboxyanthraquinone; Chrysazin-3-Carboxylicacid; Rheicacid; Rhubarb Extract; Timtec-Bb Sbb001152; 1,8-Dihydroxy-9,10-Anthraquinone-3-Carboxylic Acid; Castic acid
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Properties

Summary

Formula
C15H8O6
Molecular Mass
284.22000
Exact Mass
284.03200
PSA
111.90000
Logp
1.57140
IUPAC
4,5-dihydroxy-9,10-dioxoanthracene-2-carboxylic acid
SMILES
C1=CC2=C(C(=C1)O)C(=O)C3=C(C2=O)C=C(C=C3O)C(=O)O

Attribute classification

Matter Classification
organic
Category
API & Intermediate > Pharmaceutical Intermediates
Food(Feed) Additives > Food Additive
Plant and Other Extracts > Plant Extracts

Chemical and Physical Properties

Melting Point
≥300 °C(lit.)
Density
1.3269 g/cm3
Boiling Point
597.8 °C
Flash Point
329.4 °C
Appearance
The product is brown needle crystal and yellow needle crystal after sublimation.
Acidity and Basicity
acidness

Export information

HS Code
29189900
Export Rebate
13%
Risk Code
R36/37/38
Safety Label
Xi

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