Chlorite (redirected from Chlorite Slate)

chlorite

Widespread group of layer silicate minerals composed of hydrous aluminum silicates, usually of magnesium and iron. The name, from the Greek for “green,” refers to chlorite's typical colour. Chlorites have a silicate layer structure similar to that in micas. They characteristically occur as alteration products of other higher temperature minerals and are most common in sedimentary and igneous rocks and in some metamorphic rocks.

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chlorite [′klȯr‚īt]

(inorganic chemistry)

A salt of chlorous acid.

(mineralogy)

Any of a group of greenish, platyhydrous monoclinic silicates of aluminum, ferrous iron, and magnesium which are closely associated with and resemble the micas.

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Chlorite 

a salt of chlorous acid, HClO₂. Chlorites are formed in the reaction of chlorine dioxide and alkaline solutions in the presence of H₂O₂ or reducing agents; for example,

2ClO₂ + 2NaOH + H₂O₂ = 2NaClO₂ + 2H₂O + O₂

In acidic media, chlorites are good oxidizing agents; in the solid state, they explode upon impact or upon heating, as well as in the presence of readily oxidizable impurities.

Of all the chlorites, sodium chlorite has found use. It is obtained as colorless crystals, whose solubility in water is 31.1 percent at 0°C, 50.7 percent at 37.4°C, and 56.3 percent at 70°C. Below 37.4°C, it forms the crystal hydrate NaClO₂ · 3H₂O. Above 100°C, it begins to decompose, forming sodium chlorate and sodium chloride. Upon reaction with chlorine, it forms ClO₂ and NaCl. Sodium chlorite is used in the form of aqueous solutions for the mild bleaching of fabrics (mainly linens) and paper, for water decontamination, and, in small amounts, for the production of ClO₂.