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Updated: May 7, 2025
But our table shows us more; it indicates to us what the steps are from each raw material to each colouring matter, as well as showing us each colouring matter. The amounts obtainable you see in the table. There are two varieties of naphthol, called alpha- and beta-naphthol, but only one phenol, namely, carbolic acid.
As the name of the hydrocarbon is naphthalene, however, we call these compounds naphthols, and one is distinguished as alpha- the other as beta-naphthol, both of them having the formula C H OH. But now with respect to the colours. Its compound atom bristles, so to say, with phenol-residues, as some of the aniline dyes do with aniline residue-groups.
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