Word Meanings - EIKONOGEN - Book Publishers vocabulary database

The sodium salt of a sulphonic acid of a naphthol, C10H5 SO3Na used as a developer.

SULPHONIC
Pertaining to, or derived from, a sulphone; -- used specifically to designate any one of a series of acids (regarded as acid ethereal salts of sulphurous acid) obtained by the oxidation of the mercaptans, or by treating sulphuric acid with certain
DEVELOPER
A reagent by the action of which the latent image upon a photographic plate, after exposure in the camera, or otherwise, is developed and visible. (more info) 1. One who, or that which, develops.
NAPHTHOL
Any one of a series of hydroxyl derivatives of naphthalene, analogous to phenol. In general they are crystalline substances with a phenol odor. Naphthol blue, Naphthol orange, Naphthol yellow , brilliant dyestuffs produced from certain complex
SODIUM SULPHATE
A salt well known as a catharic under the name of Glauber's salt, which term is properly applied to the hydrate, Na2SO4.10H2O.
SODIUM
A common metallic element of the alkali group, in nature always occuring combined, as in common salt, in albite, etc. It is isolated as a soft, waxy, white, unstable metal, so readily oxidized that it combines violently with water, and
BENZONAPHTHOL; BENZONAPHTOL
A white crystalline powder used as an intestinal antiseptic; beta-naphthol benzoate.