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| | ANTHRACENE BROWN Basic information |
| | ANTHRACENE BROWN Chemical Properties |
| Melting point | 312-313° | | Boiling point | 359.45°C (rough estimate) | | density | 1.3683 (rough estimate) | | refractive index | 1.4825 (estimate) | | storage temp. | Hygroscopic, Refrigerator, under inert atmosphere | | solubility | DMSO (Slightly), Methanol (Slightly) | | form | Solid | | pka | 6.70±0.20(Predicted) | | color | Orange Red to Very Dark Orange | | Merck | 14,683 | | CAS DataBase Reference | 602-64-2 |
| Provider | Language |
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ALFA
| English |
| | ANTHRACENE BROWN Usage And Synthesis |
| Chemical Properties | Brown powder. Soluble in alcohol, ether, and glacial acetic acid; slightly soluble in water and chloroform. Sublimes at 290C. | | Uses | Anthragallol is the most active inhibitor against xanthine oxidase. | | Preparation | Commonly known as ?Anthragallol. (A)3,4,5-Trihydroxybenzoic acid and Benzoic acid and sulfuric acid heated; (b) in the presence of zinc chloride, heating gallic acid and Phthalic anhydride; (c) 2-Hydroxy-1,3-dinitroanthraquinone?reduction in strong alkaline solution; (d)1,3-Diamino-2-hydroxyanthracene-9,10-dione and hydrochloric acid heated under pressure.
Note: The product is a free acid state paste; powdery product is sodium | | Definition | ChEBI: A trihydroxyanthraquinone that is anthracene-9,10-dione substituted by hydroxy groups at positions 1, 2 and 3. | | Properties and Applications | Dark brown (chrome). (Sodium salt) was dissolved in water, slightly soluble in o-chlorophenol, (free acid) is insoluble in water, salt is not soluble in acetone, ethanol, benzene, carbon tetrachloride, cellosolve, chloroform, pyridine, toluene. The free acid in concentrated sulfuric acid is brown-red, sodium salt as a brown; diluted brown flocculent precipitate the free acid, sodium salt as an amber.
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Standard
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Ironing Fastness
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Light Fastness
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Fulling
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Persperation Fastness
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Soaping
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Water
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Alkali
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Acid
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ISO
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5
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5-6
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3-4
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2-3
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5
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5
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5
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AATCC
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Dry 3,wet 5
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5
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2-3
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5
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4
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5
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| | ANTHRACENE BROWN Preparation Products And Raw materials |
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