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Sigma-Aldrich is the result of the 1975 merger between Aldrich Chemical Company and and Sigma International, Ltd.

The company’s two main business segments are Research Chemicals, which include specialties, essentials, and biotech, and Fine Chemicals, which are used in commercial applications.

In 2014 Sigma-Aldrich agreed to be acquired by pharmaceutical giant Merck in a $17 billion deal.

Alfa Aesar is a leading manufacturer and supplier of research chemicals, metals and materials for a wide span of applications.

Like other perchlorates, this salt is a strong oxidizer although it usually reacts very slowly with organic substances.

This usually obtained as a colorless, crystalline solid is a common oxidizer used in fireworks, ammunition percussion caps, explosive primers, and is used variously in propellants, flash compositions, stars, and sparklers.

It has been used as a solid rocket propellant, although in that application it has mostly been replaced by the higher performance ammonium perchlorate.

KCl O and by the reaction of perchloric acid with potassium hydroxide; however, this is not used widely due to the dangers of perchloric acid.

Another preparation involves the electrolysis of a potassium chlorate solution, causing KCl O to form and precipitate at the anode.

This procedure is complicated by the low solubility of both potassium chlorate and potassium perchlorate, the latter of which may precipitate onto the electrodes and impede the current.

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