naphthalene

/naf-thuh-leen, nap-/US // ˈnæf θəˌlin, ˈnæp- //UK // (ˈnæfθəˌliːn, ˈnæp-) //

萘,萘类,萘的,萘的问题

Definitions

n.名词 noun

1
Chemistry.
- : a white, crystalline, water-insoluble hydrocarbon, C10H8, usually obtained from coal tar: used in making dyes, as a moth repellant, etc.

The undissolved hydrocarbon is similarly purified by fractional distillation, and furnishes the solid crystalline naphthalene.
Owing to the structure of the naphthalene molecule there are two isomeric naphthols, whereas there is only one phenol.
Secondary azo-colours derived from these bases and the usual naphthalene derivatives are also manufactured.
Other colouring-matters of the same group are in use; some of them, like “new blue,” being derivatives of naphthalene.
In addition to the azo-colours, there are certain other products which claim naphthalene as a raw material.