Examples of complexing agents include polysulfides such as sodium polysulfide or ammonium polysulfide.

The white liquor produced contains about 0.5-8% on wood sodium polysulfide.

Polysulfide Testing: A test method that exposes a sample to a sodium polysulfide solution to qualitatively determine the continuity of the plating on a wire strand.

Sodium-sulphur accumulator cells are disposed of and recycled by crushing the cells in the presence of water, by separating the solid residual materials and by preparing an aqueous solution of Na-polysulfide.

Na2S2O3 is a stable solid under normal conditions, but decomposes upon heating to give sodium sulfate and sodium polysulfide:

Then the hydrogen sulfide is used to produce sodium polysulfide in white liquor for cooking wood chips to produce pulp by the kraft process.

In a particular embodiment, a microbial culture is provided with sodium polysulfide, wherein a substrate comprising CO is converted to products including ethanol and 2,3-butanediol.

Commonly used sealants included synthetic rubbers like Thiokol (based on dichloroethane and sodium polysulfide), Neoprene (polymerized chloroprene), and Butyl (a copolymer of isobutylene with isoprene).

In leather industry, it is used to hydrolyze the raw skin and to prepare sodium sulfide to accelerate dry skin immersion and soften.