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Substance Name: Cesium, elemental
RN: 7440-46-2
UNII: 1KSV9V4Y4I
InChIKey: TVFDJXOCXUVLDH-UHFFFAOYSA-N

Note

  • A member of the alkali metals. It has an atomic symbol Cs, atomic number 50, and atomic weight 132.91. Cesium has many industrial applications, including the construction of atomic clocks based on its atomic vibrational frequency.

Molecular Formula

  • Cs

Molecular Weight

  • 132.91
 
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Names and Synonyms

Name of Substance

  • Cesium
  • Cesium, elemental

MeSH Heading

  • Cesium

Synonyms

  • Cesium
  • Cesium-133
  • EINECS 231-155-4
  • HSDB 7040
  • UNII-1KSV9V4Y4I

Systematic Names

  • Caesium
  • Cesium

Superlist Names

  • Cesium or caesium
  • Cesium or caesium [UN1407] [Dangerous when wet]
  • UN1407

Registry Numbers

CAS Registry Number

  • 7440-46-2

FDA UNII

  • 1KSV9V4Y4I

Other Registry Numbers

  • 1093650-97-5
  • 24347-12-4

System Generated Number

  • 0007440462

Structure Descriptors

InChI

1S/Cs

InChIKey

TVFDJXOCXUVLDH-UHFFFAOYSA-N

Smiles

[Cs]

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intraperitoneal 1700mg/kg (1700mg/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.

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point 28.5 deg C   EXP
Boiling Point 705 deg C   EXP
log P (octanol-water) 0.230 (none)   EST
Water Solubility 5.71E+04 mg/L 25 EST
Vapor Pressure 4.24E-09 mm Hg 25 EST
Atmospheric OH Rate Constant 0.0 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.