polysulphide

(redirected from Polysulfides)
Also found in: Encyclopedia.

polysulphide

(ˌpɒlɪˈsʌlfaɪd) or

polysulfide

n
(Elements & Compounds) any sulphide of a metal containing divalent anions in which there are chains of sulphur atoms, as in the polysulphides of sodium, Na2S2, Na2S3, Na2S4, etc
References in periodicals archive ?
This is thanks to the spice's polysulfides, which helps promote the widening of blood vessels.
This study further explains that garlic's polysulfides promote the opening or widening of blood vessels and, hence, blood pressure reduction.
After discharge, a consecutive charge shows that FeS and [Li.sub.2][S.sub.n] are formed, and these compounds are combined into a complex of polysulfides with partial oxidation to Fe[S.sub.2] [9,10] that represents a decrease in capacity from the 1st to the 2nd discharge and subsequent cycles [6,11,12] particularly because of the dissolution of intermediates such as lithium polysulfide ([Li.sub.2][S.sub.n], 4 < n < 8) in the liquid electrolyte [11,13-16].
These polymers include polyester polyols, copolyesters, polyacrylates, polysulfides, polyolefins, polyamines, and polyurethanes.
* Ingredients for the preparation of organic polysulfides: Methylene chloride and [Na.sub.2]S were from Aldrich.
After revisiting this fundamental work, Nazar and her colleagues looked at whether the production of polysulfides could be stopped by a layer of carbon atoms.
Hydrogen sulfide and polysulfides Hideo KIMURA as signaling molecules.
"All these polysulfides are doing their molecular dance and going all over the place."
SEMKIT packages are ready-to-use, disposable cartridges for storing, mixing and applying multiple-component adhesives, sealants, epoxies, polysulfides, polyurethanes and other materials that require dynamic mixing.
But the reaction isn't direct; intermediate compounds called polysulfides are formed.
[27-30] Polysulfides are more difficult to deal with, having an unpleasant smell and slow polymerization reaction.
Here we show an apparent correlation between the zonation of symbiont-containing species and the sulfur chemical speciation (sulfide, polysulfides, thiosulfate) in the water bathing them.