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Potassium chlorite
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| Names | |
|---|---|
| IUPAC name
Potassium chlorite | |
| Identifiers | |
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3D model (JSmol) |
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| ChemSpider | |
| MeSH | 67063160 |
PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| KClO2, ClKO2 | |
| Molar mass | 106.55 g/mol |
| Hazards | |
| GHS labelling: | |
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| H314 | |
| P260, P264, P280, P301+P330+P331, P304+P340, P305+P351+P338, P310, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Potassium chlorite is a potassium salt of chlorous acid (HClO2) having a chemical formula KClO2. It exists as white powder and its anhydrous form easily undergoes decomposition in presence of heat or radiation (especially gamma rays).[1]
Properties
Potassium chlorite is a colorless hygroscopic crystal that deliquesces in the air. It decomposes upon heating into potassium chloride and oxygen, emitting light.
- KClO2 → KCl + O2
Potassium chlorite forms orthorhombic cmcm crystals and has been reported to decompose within hours at room temperature.[1][2] It is an oxidizing agent.
Synthesis
Some of the methods of preparation of potassium chlorite are:
- Thermal decomposition of potassium chlorate
- 2 KClO2 + O2 "}},"i":0}}]}' id="mwKg"/>2 KClO3 → 2 KClO2 + O2
- Reaction of chlorous acid and potassium hydroxide
- KClO2 + H2O "}},"i":0}}]}' id="mwMg"/>HClO2 + KOH → KClO2 + H2O
References
- 1 2 Boyd, George E.; Brown, Larry Clyde (1970). "Thermal and radiolytic decomposition of anhydrous crystalline potassium chlorite". The Journal of Physical Chemistry. 74 (8): 1691–1694. doi:10.1021/j100703a006. ISSN 0022-3654.
- ↑ 2</sub> and KClO<sub>2</sub>"},"url":{"wt":"https://scripts.iucr.org/cgi-bin/paper?S0108270104032482"},"journal":{"wt":"Acta Crystallographica Section C: Crystal Structure Communications"},"language":{"wt":"en"},"volume":{"wt":"61"},"issue":{"wt":"2"},"pages":{"wt":"i17–i19"},"doi":{"wt":"10.1107/S0108270104032482"},"pmid":{"wt":"15695881"},"bibcode":{"wt":"2005AcCrC..61I..17S"},"issn":{"wt":"0108-2701"},"url-access":{"wt":"subscription"}},"i":0}}]}' id="mwTQ"/>Smolentsev, A. I.; Naumov, D. Yu (2005-02-15). "Two alkali metal chlorites, LiClO2 and KClO2". Acta Crystallographica Section C: Crystal Structure Communications. 61 (2): i17–i19. Bibcode:2005AcCrC..61I..17S. doi:10.1107/S0108270104032482. ISSN 0108-2701. PMID 15695881.
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