Halite (oxyanion)

Class of anions

Chlorite (ClO−2), a halite

A halite, also known as a halogenite,[1] is an oxyanion containing a halogen in a +3 oxidation state. It is the conjugate base of a halous acid. The known halites are chlorite, bromite, and iodite.

## Uses

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Halites can be used to generate the respective halogen dioxides via a one-electron oxidation:

5 NaClO2 \+ 4 HCl → 5 NaCl \+ 4 ClO•
2 \+ 2 H2O
BrO−
2 \+ HBrO3 \+ H+ → 2 BrO•
2 \+ H2O

This reaction in particular is used in bleach to generate chlorine dioxide.

## Stability

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Chlorites tend to decompose rapidly, some even explosively, upon heating.[2] A few bromites have been isolated, but no iodites have.[3]

## References

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1. ^ Holleman, A. F.; Wiberg, Egon; Wiberg, Nils (2001). Inorganic Chemistry. Web: Academic Press. p. 439\. ISBN 9780123526519. Retrieved 21 March 2019.
2. ^ Holleman, A. F.; Wiberg, Egon; Wiberg, Nils (2001). Inorganic Chemistry. Web: Academic Press. p. 445\. ISBN 9780123526519. Retrieved 21 March 2019.
3. ^ Egon Wiberg, Arnold Frederick Holleman (2001) Inorganic Chemistry, Elsevier ISBN 0-12-352651-5

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