Structured Summary
Abstract
An element in the alkali group of metals with an atomic symbol K, atomic number 19, and atomic weight 39.10. It is the chief cation in the intracellular fluid of muscle and other cells. Potassium ion is a strong electrolyte that plays a significant role in the regulation of fluid volume and maintenance of the WATER-ELECTROLYTE BALANCE.
Chemical Identity
Chemical Information
- Molecular Formula
- K
- Molecular Weight
- 39.0983 g/mol
- CAS Registry No.
- 7440-09-7
- IUPAC Name
- potassium
- InChIKey
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N
- SMILES
- [K]
- MeSH Unique ID
- D011188
- Source
- PubChem CID 5462222
MeSH Record
Classification
Broader headings
Narrower headings
Related Concepts
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MeSH Record
See Also
MeSH Record
Aspects Covered
23 allowable subheadings
Indexed with the subheadings administration & dosage, adverse effects, agonists, analysis, blood, cerebrospinal fluid, chemistry, classification, economics, history, immunology, isolation & purification, metabolism, pharmacokinetics, pharmacology, physiology, poisoning, radiation effects, standards, supply & distribution, therapeutic use, toxicity, urine.
MeSH Record
Indexing Annotation
/blood: note also HYPERKALEMIA and HYPOKALEMIA; POTASSIUM, DIETARY is also available
MeSH Hierarchy
Tree Numbers
AMA Style
References
- National Library of Medicine. Potassium. Medical Subject Headings (MeSH). 2026. Unique ID D011188. http://id.nlm.nih.gov/mesh/2026/D011188
- Potassium. In: Wikipedia. https://en.wikipedia.org/wiki/Potassium
- Potassium. In: Wikidata. https://www.wikidata.org/wiki/Q703
- Potassium. In: PubChem Compound. CID 5462222. https://pubchem.ncbi.nlm.nih.gov/compound/5462222