naphthol

9.9

One of two solid chemicals made from naphthalene and used to make dyes

noun
/ˈnæfθɑl/

Specialized

: naftol

The laboratory stocked both forms of naphthol for different chemical reactions.

Examples

There are two isomers of naphthol, called alpha and beta, with different chemical properties.
The chemical naphthol is essential in dye production.
Naphthol is used as an intermediate in the production of azo dyes.
Several types of naphthols are used in various industries.
The artist frequently mixes pigments with naphthol to achieve vibrant colors in his paintings.
In industrial applications, naphthol serves as an important intermediate in the synthesis of dyes.
Manufacturers often rely on naphthol to produce vivid shades for textiles and paper products.

Synonyms

alpha-naphthol

vsnaphthol

Specialized

9.9

A chemical used to make dyes and to test for sugars in labs

refers to either of the two isomers used generally in dyes and intermediates

beta-naphthol

vsnaphthol

Specialized

9.9

A chemical used to protect rubber, for example in tires

refers to either of the two isomers mainly used in dye manufacture and intermediates

Compounds

beta-naphthol

Specialized

9.9

A chemical used to protect rubber, for example in tires

alpha-naphthol

Specialized

9.9

A chemical used to make dyes and to test for sugars in labs

alpha-naphthol test

Specialized

8.3

A chemical test that shows a violet ring when sugar is in a liquid

Surface Forms

naphthol singular

naphthols plural

Morphology

naphthol = naphthalene (opaque) = naphth + ol

This is a technical chemical formation (naphth- + -ol) using a specialized combining form and a scientific suffix, which is not transparently meaningful to an average B1 learner.

Etymology

Naphthol comes from naphtha, a name for 'oily' substances from coal or oil, plus the chemical ending -ol, like in alcohol, which means 'a kind of chemical'. So naphthol is an oil-related chemical used in making dyes and other products.