Definitions for naphthols

• Definition
• Anagrams (376)

naphthols naph·thol

Spelling: [naf-thawl, -thol, nap-]

IPA: /ˈnæf θɔl, -θɒl, ˈnæp-/

Naphthols is a 9 letter English word. It's valid Scrabble word worth 16 points. It's valid Words with friends word worth 17 points.

You can make 376 anagrams from letters in naphthols (ahhlnopst).

Definitions for naphthols

noun

1. either of two isomeric hydroxyl derivatives, C 10 H 7 OH, of naphthalene (alpha-naphthol or 1-naphthol and beta-naphthol or 2-naphthol) white or yellowish crystals, with a phenolic odor, that darken on exposure to light: used chiefly in dyes, drugs, perfumes, and insecticides.
2. either of two isomeric hydroxyl derivatives, C 10 H 7 OH, of naphthalene (alpha-naphthol or 1-naphthol and beta-naphthol or 2-naphthol) white or yellowish crystals, with a phenolic odor, that darken on exposure to light: used chiefly in dyes, drugs, perfumes, and insecticides.

Origin of naphthols

First recorded in 1840-50; naphth- + -ol¹

Examples for naphthols

The substance has the characteristic appearance, odor and taste of naphthol.

naphthol Yellow is of course a naphthol colour, whilst Vermilline Scarlet is a dye containing both naphthylamine and naphthol.

From naphthalene, either naphthylamine (a body like aniline) or naphthol (resembling phenol) may be prepared.

Resorcine, like naphthol, is insoluble in water, but it can be dissolved by using either soda ash or caustic soda.

When this compound is combined with naphthol diazo-azo dyes are produced.

Both the formaldehyde and the naphthol exercise tanning actions, but the process is not used in practise.

Various additions have been made from time to time to the naphthol bath.

The compounds formed are brilliant orange dyes, the latter being still largely consumed as “naphthol orange.”

When a good method for making the naphthol was discovered in 1869, the dye was made from this.

So instead of phenol, other coal tar products such as cresol, naphthol or benzene itself may be used.

Various additions have been made from time to time to the naphthol bath.

So instead of phenol, other coal tar products such as cresol, naphthol or benzene itself may be used.

When a good method for making the naphthol was discovered in 1869, the dye was made from this.

The compounds formed are brilliant orange dyes, the latter being still largely consumed as “naphthol orange.”

The substance has the characteristic appearance, odor and taste of naphthol.

From naphthalene, either naphthylamine (a body like aniline) or naphthol (resembling phenol) may be prepared.

Both the formaldehyde and the naphthol exercise tanning actions, but the process is not used in practise.

naphthol Yellow is of course a naphthol colour, whilst Vermilline Scarlet is a dye containing both naphthylamine and naphthol.

Resorcine, like naphthol, is insoluble in water, but it can be dissolved by using either soda ash or caustic soda.

When this compound is combined with naphthol diazo-azo dyes are produced.