1,8-DIHYDROXYANTHRAQUINONE

PRODUCT IDENTIFICATION

CAS NO. 117-10-2

1,8-DIHYDROXYANTHRAQUINONE

EINECS NO. 204-173-5
FORMULA C14H8O4
MOL WT. 240.21
H.S. CODE 2914.69
TOXICITY Oral rat LD50: 292 mg/kg
SYNONYMS Chrysazin; Danthron; 1,8-Dioxyanthraquinone;
1,8-Dihydroxyanthrachinon; 1,8-dihydroxy-9,10-anthraquinone; Dioxyanthrachinonum; Dihydroxyanthraquinone; 1,8-Dihydroxy-9,10-Anthracenedione; 1,4,5,8-Tetroxyantraquinone;
SMILES 1-nitroanthraquinone

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

yellow to orange powder

MELTING POINT 191 - 193 C (Decomposes)
BOILING POINT  
SPECIFIC GRAVITY  
SOLUBILITY IN WATER Insoluble (Soluble in glacial acetic acid, aqueous alkali, ethanol, acetone, chloroform and ether)
AUTOIGNITION  
pH  
VAPOR DENSITY  
NFPA RATINGS  

REFRACTIVE INDEX

 
FLASH POINT

 

STABILITY Stable under ordinary conditions

GENERAL DESCRIPTION & APPLICATIONS

Anthraquinone, a polycyclic aromatic hydrocarbon containing two opposite carbonyl groups (C=O) at 9,10 position, is yellow or light gray to gray-green crystal powder; insoluble in water. , In nature, it occurs in plants (aloe, cascara sagrada, senna, and rhubarb), fungi, lichens, and insects as a parent material for coloring of yellow, orange, red, red-brown, or violet. It is commercially produced by several ways including by oxidation of anthracene with chromic acid, the condensation of benzene and phthalic anhydride, followed by dehydration for cyclization, and diene Diels-Alder reaction. Anthraquinone is the most important quinone derivative of anthracene as the parent substance of a large class of dyes and pigments. One of the oldest mordant dye, alizarin, is the anthraquinone derivative. Anthraquinone is a starting material for the production of coloring compounds, antioxidants, and polymerization inhibitors. Its derivatives are widely used as intermediates for  dyes, pigments, photographic chemicals, and paints. Anthraquinone is used in paper industry as a catalyst to increase the pulp production yield and to improves the fiber strength through reduction reaction of cellulose to carboxylic acid. Natural anthraquinones have cathartic properties. Anthraquinones derivatives are also used in manufacturing drugs. Mitoxantrone, an antineoplastic is an example. Quinizarin, 1,4-Dihydroxyanthraquinone, is used as an intermediate for the synthesis of indanthrene and alizarin dyestuffs. It is also used to form lakes with calcium, barium, and lead. Alizarin is 1,2-Dihydroxyanthraquinone. Chrysazin is 1,8-Dihydroxyanthraquinone. Chrysazin is called danthron when used as a cathartic. It was used as a stimulant laxative to treat constipation. But it is no longer widely used due to its potential to cause cancer. 2,6-Dihydroxyanthraquinone is called anthraflavic Acid. Dihydroxyanthraquinone molecules include:

SALES SPECIFICATION

APPEARANCE

yellow to orange solid

CONTENT

95.0% min

TRANSPORTATION
PACKING  
HAZARD CLASS 6.1
UN NO.

2321

OTHER INFORMATION
Hazard Symbols: XI, Risk Phrases: 33/36/37/38, Safety Phrases: 24/25
Cancer suspect
PRICE INFORMATION
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