caesium(1+) ion oxidanide

• ChemBase ID: 102360
• Molecular Formular: CsO
• Molecular Mass: 148.90485
• Monoisotopic Mass: 148.90036562
• SMILES: [OH-].[Cs+]
• Canonical SMILES: [OH-].[Cs+]
• InChI: InChI=1S/Cs.H2O/h;1H2/q+1;/p-1
• InChIKey: HUCVOHYBFXVBRW-UHFFFAOYSA-M

NAMES AND DATABASE IDS

Names

• IUPAC name: caesium(1+) ion oxidanide; caesium(1+) ion hydroxide
• IUPAC Traditional name: caesium(1+) OH-; caesium(1+) ion hydroxide; caesium(1+) ion oxidanide
• Synonyms: Cesium Hydrate; Cesium Hydroxide Dimer; CESIUM HYDROXIDE OPTICAL GRADE; Cesium hydroxide solution; Cesium hydroxide hydrate; Cesium hydroxide; Caesium hydroxide; CESIUM HYDROXIDE; Cesium hydroxide monohydrate; 氢氧化铯 溶液; 氢氧化铯水合物; 氢氧化铯; 一水合氢氧化铯; 氢氧化铯 一水合物

Database IDs

• CAS Number: 21351-79-1; 35103-79-8; 12260-45-6
• EC Number: 244-344-1
• MDL Number: MFCD00149664; MFCD00010964
• Merck Index: 142013
• PubChem SID: 24853873; 24853875; 24873911; 24852606; 162088647; 24880042
• PubChem CID: 62750
• CHEBI ID: 33988
• Chemspider ID: 56494
• Wikipedia Title: Caesium_hydroxide

CALCULATED PROPERTIES

• Acid pKa: 15.7
• H Acceptors: 1
• H Donor: 1
• LogD (pH = 5.5): -0.652
• LogD (pH = 7.4): -0.652
• Log P: -0.652
• Molar Refractivity: 13.9149 cm^3
• Polarizability: 1.1434737 Å^3
• Polar Surface Area: 0.0 Å^2
• Rotatable Bonds: 0
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Solubility: 300 g/100 mL at 30 °C in water; Soluble in ethanol
• Apperance: Crystalline; liquid; Liquid; powder; Whitish-yellow deliquescent crystals
• Melting Point: 205-206°C; 272 °C(lit.); 272.3°C; 273°C; 342.3 °C
• Flash Point: Non flammable
• Density: 1.72 g/mL at 25 °C; 1.870; 3.675 g/cm^3; 3.675 g/ml; 3.68 g/mL at 25 °C(lit.)
• pKb: -1.76
• Heat Capacity: 69.9 J·mol^-1·K^-1
• Std enthalpy of formation: −416.2 kJ·mol^-1
• Std molar entropy: 104.2 J·K^−1·mol^−1

Safety Information

• Storage Condition: Room Temperature (15-30°C)
• Storage Warning: Air Sensitive; Air Sensitive & Hygroscopic
• RTECS: FK9800000
• European Hazard Symbols: Corrosive (C); X; Harmful (Xn)
• UN Number: 2681; 2682; UN2681; UN2682; UN3262
• German water hazard class: 1; 3
• Hazard Class: 8
• Packing Group: 2; II
• Australian Hazchem: 2X
• Risk Statements: 22-34; 22-35; R:22-34
• Safety Statements: 20-26-36/37/39-45; 20-26-36/37/39-45-60; 26-36/37/39-45; 26-36/37/39-45-60; S:26-27/28-36/37/39-46-64
• EU Classification: C10
• EU Hazard Identification Number: 8B
• Emergency Response Guidebook(ERG) Number: 157
• TSCA Listed: 否; 是
• EU Index: Not listed
• GHS Pictograms: GHS05; GHS06; GHS07
• GHS Signal Word: Danger
• GHS Hazard statements: H301-H314-H318; H302-H314; H314-H318-H302
• GHS Precautionary statements: P260-P301+P310-P303+P361+P353-P305+P351+P338-P405-P501A; P260-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501A; P280-P305 + P351 + P338-P310
• 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 2681 8/PG 2; UN 2682 8/PG 2

Product Information

• Purity: ≥95.0% (T); 50% w/w aq. soln., 99% (metals basis); 50% w/w aq. soln., 99.9% (metals basis); 96%; cesium carbonate <5%; 99% trace metals basis (purity determined on metals basis); 99.8%; 99.9%; 99.9% (metals basis); 99.9% trace metals basis; 99.95% trace metals basis
• Concentration: 50 wt. % in H2O
• Grade: OPTICAL; technical grade
• Impurities: ~5% cesium carbonate; <5% Cs2CO3
• Linear Formula: CsOH
• Empirical Formula (Hill Notation): HCsO · H2O

DETAILS

MP Biomedicals - 05215770

MP Biomedicals Rare Chemical collection

MP Biomedicals - 02101328

Optical Grade
Purity: 99.8%
Prepared particularly for density gradient work.

Sigma Aldrich - 232041

Frequently Asked Questions
Live Chat and Frequently Asked Questions are available for this Product.
Packaging
10, 50, 200 g in poly bottle
Application
Used to make porous cesium titanosilicates, potential ion-exchange materials for cleanup of radioactive wastes.1

Sigma Aldrich - 516988

Packaging
5, 25 g in poly bottle

Sigma Aldrich - 562513

Packaging
1 kg in poly bottle

Sigma Aldrich - 562505

Packaging
1, 5 kg in poly bottle

Sigma Aldrich - 232068

Packaging
100, 500 g in poly bottle

Sigma Aldrich - 21000

Packaging
10, 50, 250 g in poly bottle

REFERENCES

• Superior base for catalytic alkynylation of aldehydes and ketones with 1-alkynes: Angew. Chem. Int. Ed., 38, 1463 (1999). Promotes the chemoselective N-monoalkylation of primary amines with alkyl bromides in DMF: Org. Lett., 1, 1893 (1999). Under similar conditions, with the addition of Bu₄NI, alcohols are converted to ethers: Tetrahedron Lett., 40, 1843 (1999).