Crossword-Solution: ANTHRAQUINONE
Dictionary
| Word | Word Type | Definition |
|---|---|---|
| Anthraquinone | n. | A hydrocarbon, C6H4.C2O2.C6H4, subliming in shining yellow needles. It is obtained by oxidation of anthracene. |
We have 1 clue for the answer “ANTHRAQUINONE”
| Clue | Answers |
|---|---|
| a chemical used in the manufacture of some dyes | 1 answer |
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Poet’s word, with inverted comma, for the end of the day
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E
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Hint 1 meaning
The old plural of Eye.
Hint 2 anagram
EEN
Hint 3 another clue
AND STILL ___
31 +2
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Sentences with ANTHRAQUINONE (5)
Anthraquinone heated with sulphuric acid and treated with formaldehyde in the usual manner, yields a substance which, when mixed with water, forms an opaque, milky solution.
Vapour baths of iron are used in connexion with boiling anthracene (335°), anthraquinone (368°), sulphur (444°), phosphoruspentasulphide (518°); molten lead may also be used.
The quinone is purified, converted into a sulpho-acid, and the sodium salt of the latter on fusion with alkali gives alizarin, which is dihydroxy-anthraquinone.
Isomeric compounds known as "flavopurpurin" and "anthrapurpurin" are also made from the disulpho-acids of anthraquinone by fusion with alkali and potassium chlorate.
Another trihydroxy-anthraquinone, although not obtained directly from anthracene, must be claimed as a tar-product.