Preparation
3-Chloroanthracen-10(9H)-one with sulfuric acid Oxalaldehyde processing, garnish with Potassium hydroxide Etanol solution alkali fusion, and then sulfate.
Synthesis
Dichloroacedianthrone, Indanthren
Red Brown RR,
is prepared from 2-chloroanthrone and glyoxal
sulfate in chlorobenzene via 2,2'-
dichloroanthroneethylene, followed by ring closure
in sulfuric acid , .
Properties and Applications
red light brown. In concentrated sulfuric acid to red light blue; In the basic insurance powder solution for yellow brown; In the acidic insurance powder solution for yellow brown.
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Standard
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Ironing Fastness
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Chlorine bleach
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Light Fastness
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Mercerized
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Oxygen bleach
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Soaping
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Fading
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Stain
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ISO
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4
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4-5
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7-8
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4-5
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4-5
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5
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5
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![3,11-dichloroaceanthryleno[2,1-a]aceanthrylene-5,13-dione Structure](https://www.chemicalbook.com/CAS/20180808/GIF/6424-51-7.gif)