caesium

• ChemBase ID: 136954
• Molecular Formular: Cs
• Molecular Mass: 132.90545
• Monoisotopic Mass: 132.905451
• SMILES: [Cs]
• Canonical SMILES: [Cs]
• InChI: InChI=1S/Cs
• InChIKey: TVFDJXOCXUVLDH-UHFFFAOYSA-N

NAMES AND DATABASE IDS

Names

• IUPAC name: caesium; caesium hydride
• IUPAC Traditional name: caesium; caesium hydride
• Synonyms: Cesium, plasma standard solution, Specpure®, Cs 10,000 g/ml; Cesium, AAS standard solution, Specpure®, Cs 1000 g/ml; Cesium, plasma standard solution, Specpure®, Cs 1000 g/ml; Cesium; 铯,等离子标准溶液, Specpure®, Cs 10,000®g/ml; 铯, AAS标准溶液, Specpure®, Cs 1000 μg/ml; 铯,等离子标准溶液, Specpure®, Cs 1000®g/ml; 铯

Database IDs

• CAS Number: 7440-46-2
• EC Number: 231-155-4; 231-714-2
• MDL Number: MFCD00134037
• PubChem SID: 24854363; 162231221; 24848807
• PubChem CID: 5354618

CALCULATED PROPERTIES

• LogD (pH = 5.5): -0.326
• LogD (pH = 7.4): -0.326
• H Acceptors: 0
• H Donor: 0
• Log P: -0.326
• Molar Refractivity: 0.8 cm^3
• Polarizability: 6.0964203 Å^3
• Polar Surface Area: 0.0 Å^2
• Rotatable Bonds: 0
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Apperance: Ampouled; ingot; Liquid; Vacuum sealed in breakseal ampoules
• Melting Point: 28.5 °C(lit.)
• Boiling Point: 705 °C(lit.)
• Density: 1.873 g/mL at 25 °C(lit.)
• Vapor Pressure: 1 mmHg ( 279 °C)
• Resistivity: 19 μΩ-cm0°C

Safety Information

• RTECS: FK9225000
• European Hazard Symbols: Corrosive (C); Flammable (F)
• UN Number: 1407; UN1407; UN3264
• German water hazard class: 3
• Hazard Class: 4.3; 8
• Packing Group: 1; I; III
• Risk Statements: 11-14/15-34; 14/15-34; 34
• Safety Statements: 23-26-36/37/39-45; 7/8-26-36/37/39-43-45; 8-16-26-36/37/39-43-45
• TSCA Listed: 是
• GHS Pictograms: GHS02; GHS05
• GHS Signal Word: Danger
• GHS Hazard statements: H260-H314; H260-H314-H318; H314; H314-H318
• GHS Precautionary statements: P223-P231 + P232-P280-P305 + P351 + P338-P370 + P378-P422; P231+P232-P260-P303+P361+P353-P305+P351+P338-P405-P501A; P260-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501A
• Personal Protective Equipment: Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges
• RID/ADR: UN 1407 4.3/PG 1
• Supplemental Hazard Statements: Reacts violently with water.

Product Information

• Purity: ≥99.5%; ≥99.95% trace metals basis; 99.5%; 99.8% (metals basis); 99.98% (metals basis)
• Grade: purum
• Packaging: pkg of Packaged in: Breakseal Ampule
• Empirical Formula (Hill Notation): Cs

DETAILS

Sigma Aldrich - 239240

Packaging
1, 5 g in ampule

Sigma Aldrich - 14714

Application
Investigations studying scattering effects on quantum efficiency and response time for cesiated metal photocathodes1Alkali modifier for hydrogenation catalysts2Reactant involved in synthesis of pseudo-hollandite chromium tellurides3Catalyst for ammonia synthesis, investigations of in situ cesium reduction4