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Substance Name: Potassium
RN: 7440-09-7
UNII: RWP5GA015D
InChIKey: ZLMJMSJWJFRBEC-UHFFFAOYSA-N

Note

  • 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.

Molecular Formula

  • K

Molecular Weight

  • 39.098
 

Names and Synonyms

Name of Substance

  • Potassium
  • Potassium, elemental

MeSH Heading

  • Potassium

Synonyms

  • EINECS 231-119-8
  • HSDB 698
  • Kalium
  • Potassium
  • Potassium, (liquid alloy)
  • Potassium, metal
  • UNII-RWP5GA015D

Systematic Name

  • Potassium

Superlist Names

  • Potassium
  • Potassium [UN2257] [Dangerous when wet]
  • UN2257

Registry Numbers

CAS Registry Number

  • 7440-09-7

FDA UNII

  • RWP5GA015D

Other Registry Number

  • 31079-13-7

System Generated Number

  • 0007440097

Structure Descriptors

InChI

1S/K

InChIKey

ZLMJMSJWJFRBEC-UHFFFAOYSA-N

Smiles

[K]

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intraperitoneal 700mg/kg (700mg/kg)   "Structure et Activite Pharmacodyanmique des Medicaments du Systeme Nerveux Vegetatif," Bovet, D., and F. Bovet-Nitti, New York, S. Karger, 1948Vol. -, Pg. 704, 1948.