from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Resembling salt; said of certain binary compounds consisting of a metal united to a negative element or radical, and now chiefly applied to the chlorides, bromides, iodides, and sometimes the fluorides and cyanides.
- n. Any haloid substance.
from the GNU version of the Collaborative International Dictionary of English
- adj. Resembling salt; -- said of certain binary compounds consisting of a metal united to a negative element or radical, and now chiefly applied to the chlorides, bromides, iodides, and sometimes also to the fluorides and cyanides.
from The Century Dictionary and Cyclopedia
- In chem., like sea-salt: applied to all those compounds which consist of a metal directly united to chlorin, bromine, iodine, cyanogen, or fluorin. They are distinguished by the name of haloid salts because in constitution they are all similar to sea-salt.
- n. A haloid salt.
- n. Also spelled haloide.
To begin with, the two investigators applied themselves to the simplest types of the regular system, represented by the alkaline haloid salts.
From these investigations it follows that a metal atom in the crystals of the alkaloid salts is situated at one and the same distance from the six haloid atoms nearest to it, and vice versa
That would seem to have been specially the case with the haloid salts of silver, which Stas employed to a large extent.
The groups of fatty acids are distinguished by a characteristic deportment toward halogens; while members of the first series are indifferent to haloids, those of the second and third class combine readily, without suffering substitution, with two respectively four atoms of a haloid.
The reversal of the image by soluble haloid salts, such as bromide of potassium, was then dwelt upon with experimental demonstration.
It was shown that the merest trace of soluble haloid would reverse an image by the extraction of bromine from it, and the fact that the most refrangible part of the spectrum was principally efficacious in completing this action showed how necessary it was to avoid falling into error when analyzing photographic action by the spectroscope.
They are crystalline solids, usually of a yellow colour, which do not unite with acids; they are readily converted into amino-azo compounds (see above) and are decomposed by the concentrated halogen acids, yielding haloid benzenes, nitrogen and an amine.
Another class of bodies also concerns our subject: the special sensitisers used by the photographer to modify the spectral distribution of sensibility of the haloid salts, _e. g._ eosine, fuchsine, cyanine.
But what chiefly concerns the present consideration is the fact that the haloid salts of silver are vigorously photo-electric, and, it is suggestive, possess, according to Schmidt, an activity in the descending order bromide, chloride, iodide.
We have, in fact, but the one resource -- the allotropic modification of the haloid -- whereby to explain all these orders of stability.