Crossword-Solution: NAPHTHOL
Dictionary
| Word | Word Type | Definition |
|---|---|---|
| Naphthol | n. | Any one of a series of hydroxyl derivatives of naphthalene, analogous to phenol. In general they are crystalline substances with a phenol (carbolic) odor. |
We have 6 clues for the answer “NAPHTHOL”
| Clue | Answers |
|---|---|
| A-NAPHTHYLAMINE-prepared substance | 1 answer |
| COLOURLESS crystalline substance with faint smell | 1 answer |
| CRYSTALLINE substance soluble in ether and alcohol | 1 answer |
| CRYSTALLINE substance with faint smell | 1 answer |
| white crystalline solid used in dyes | 1 answer |
| NAPHTHALENE, product of | 2 answers |
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Form of quartz with coloured bands
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Hint 1 meaning
A semipellucid, uncrystallized variety of quartz, presenting
various tints in the same specimen. Its colors are delicately arranged
in stripes or bands, or blended in clouds.
Hint 2 anagram
AGTEA
Hint 3 another clue
CERTAIN BRAIN SIZE
9 +1
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Sentences with NAPHTHOL (5)
From [Greek: a]- and [Greek: b]-naphthol a number of sulphonic acids may easily be prepared; viz., mono-, di-, and trisulphonic acids.
Pat., 70,162.] It is a remarkable fact that non-condensed methane derivatives of naphthol, _e.g._, b-naphthol-a-methanesulphonic acid, dissolved in water and partly neutralised, are devoid of tanning character when allowed to act upon pelt.
The condensation product of b-naphthol above referred to precipitates gelatine and aniline hydrochloride and gives a brown coloration with ferric chloride.
This process consists of two steps: the pelt is first immersed in a 0.25-0.50 per cent, formaldehyde solution, and secondly in an aqueous solution of -[Greek: a] or -[Greek: b] naphthol; this order may be reversed.
Leather obtained through the action of [Greek: a]-naphthol is, when freshly tanned, pure white and sufficiently soft and firm, but quickly assumes a brown colour on storing; if, however, [Greek: b]-naphthol is employed, a cream-coloured leather results, the colour of which turns only slightly more yellowish even when exposed to the direct rays of the sun.