55 Cs 132.905

Cesium

alkali metal · Group 1 · Period 6

Atomic properties

Atomic number
55
Z
Atomic weight
132.905[1]
g/mol
Density
1.93 g/cm³
at STP
Melting point
28.44 °C
at 1 atm
Boiling point
671 °C
at 1 atm
Crystal structure
BCC
Electron config.
[Xe] 6s¹
Oxidation states
+1
most common

Market data

No tradeable futures market for Cs on Yahoo / Stooq. Live market data is not available; pricing in this page is based on contract reference figures from the source documents.

Raw material sources & pricing

Raw Material FormGrade/QualityPrice Paid by RefinersMajor SourcesNotes
Pollucite Ore (High Grade)20-30% Cs₂O$3,500-4,500/MTCanada (Tanco Mine)Highest quality, easiest to process
Pollucite Ore (Medium Grade)15-20% Cs₂O$2,800-3,500/MTZimbabwe, NamibiaRequires additional beneficiation
Lepidolite (Secondary Source)0.3-0.7% Cs₂O$180-250/MTChina, BrazilByproduct of lithium extraction
Salt Brines10-50 ppm CsN/AChile, ChinaExperimental extraction only
Pollucite Ore - Primary Raw Material

Current Market Price: $2,800-4,500/MT (varies by Cs₂O content) Major Global Reserves: Canada (Manitoba): ~120,000 MT proven reserves (70% of world reserves) - Tanco Mine Zimbabwe: ~40,000 MT - Bikita pegmatite deposits Namibia: ~15,000 MT - Rubicon and Helikon mines China: ~8,000 MT - Jiangxi Province 2025 Production Leaders: Canada: 85 MT cesium compounds (68% of global production) Zimbabwe: 25 MT cesium compounds China: 15 MT cesium compounds Total global production: ~125 MT cesium compounds Raw Material Form Grade/Quality Price Paid by Refiners Major Sources Notes Pollucite Ore (High Grade) 20-30% Cs₂O $3,500-4,500/MT Canada (Tanco Mine) Highest quality, easiest to process Pollucite Ore (Medium Grade) 15-20% Cs₂O $2,800-3,500/MT Zimbabwe, Namibia Requires additional beneficiation Lepido

⚠️ Seawater Cesium Extraction

Commercial Viability: NOT ECONOMICALLY VIABLE Concentration: 0.0003 ppm (extremely low) Chemical Form: Cs⁺ (free ion) Status: No commercial seawater cesium extraction exists. The extremely low concentration (300 parts per trillion) and lack of selective extraction methods make it uneconomical compared to pollucite mining. Note: Unlike lithium or bromine, cesium has never been commercially extracted from seawater or brines.

Production cost analysis

Cost Component$/kg Cesium Metal% of Total CostNotes
Pollucite Ore (3-4 MT needed)$400-60025-30%Based on 25% Cs₂O content ore
Chemical Processing$300-45020-25%Acid digestion, purification
Labor (Specialized)$250-35015-20%Requires hazmat handling
Electrolysis/Reduction$200-30012-15%Small-scale batch process
Packaging & Safety$150-25010-12%Argon atmosphere, special containers
Other Materials & Overhead$200-35012-15%Reagents, utilities, equipment
Total Production Cost$1,500-2,300100%Compare to selling price: $1,800-2,500/kg

Energy consumption breakdown

Process StageEnergy Consumption% of Total EnergyEnergy TypeKey Operations
Ore Crushing & Grinding5-8 MJ/kg10-13%ElectricityMechanical size reduction to -200 mesh
Acid Digestion12-18 MJ/kg25-30%Natural Gas/SteamH₂SO₄ digestion at 250-300°C
Purification & Crystallization8-12 MJ/kg17-20%Steam/ElectricityMultiple recrystallizations
Electrolysis/Thermal Reduction15-20 MJ/kg30-35%ElectricityFused salt electrolysis at 700°C
Distillation & Purification5-8 MJ/kg10-13%ElectricityVacuum distillation at 300°C
Chemical Processing Details

Ore Preparation: Crushing to liberate pollucite crystals Acid Digestion: H₂SO₄ treatment forms Cs₂SO₄ Separation: Removal of Al, Si, and other impurities Precipitation: Formation of cesium alum Conversion: To CsCl or Cs₂CO₃ for metal production

Metal Production Methods

Electrolysis: Fused CsCl at 645°C (most common) Thermal Reduction: Ca or Li reduction of CsCl Vacuum Distillation: Final purification to 99.95% Batch Size: Typically 1-5 kg per run Yield: 85-90% from cesium chloride

Commercial forms & specifications

Product FormChemical FormulaMolecular WeightTypical PurityPrice Range (USD/kg)Main Applications
Cesium MetalCs132.91 g/mol99.5-99.98%$1,800-2,500Atomic clocks, photoelectric cells
Cesium ChlorideCsCl168.36 g/mol99.9-99.999%$85-150Density gradients, medical imaging
Cesium CarbonateCs₂CO₃325.82 g/mol99.9-99.99%$45-80Glass manufacturing, catalysts
Cesium Hydroxide (50% solution)CsOH149.91 g/mol49-51% CsOH$120-180Organic synthesis, batteries
Cesium FormateHCOOCs177.92 g/mol98-99%$2,200-2,800Drilling fluids (oil & gas)
Cesium NitrateCsNO₃194.91 g/mol99-99.9%$95-140Specialty glass, prisms
Cesium BromideCsBr212.81 g/mol99.9-99.99%$110-165Optics, scintillation counters
Cesium IodideCsI259.81 g/mol99.9-99.999%$180-250Scintillation detectors, X-ray imaging
Cesium SulfateCs₂SO₄361.87 g/mol99-99.9%$75-120Density gradients, research
Cesium AcetateCH₃COOCs191.95 g/mol99-99.5%$125-175Catalysts, specialty chemicals

Suppliers by country

🇨🇦 Canada

CompanyProduct FormsSpecialties
Sinomine Resource Group (Tanco Mine)CsCl, Cs₂CO₃, CsOH, Cs formateWorld's largest cesium producer, owns Tanco Mine
Avalon Advanced MaterialsPollucite concentratesExploration and development projects

🇺🇸 United States

CompanyProduct FormsSpecialties
American ElementsCs metal, all Cs compounds, ultra-high purityResearch quantities, custom synthesis
Sigma-Aldrich (Millipore Sigma)All cesium compounds, reagent gradesLaboratory and research quantities
Strem ChemicalsHigh-purity Cs compoundsCatalysts and specialty chemicals

🇩🇪 Germany

CompanyProduct FormsSpecialties
Albemarle Germany GmbHCsCl, Cs₂CO₃, CsOH solutionsPharmaceutical grade cesium compounds
ABCR GmbHCesium compounds, organocesium reagentsFine chemicals, custom synthesis

🇨🇳 China

CompanyProduct FormsSpecialties
Jiangxi Dongpeng New MaterialsCsCl, Cs₂CO₃, CsNO₃Industrial grade cesium compounds
Shanghai Xinglu ChemicalCesium salts, solutionsElectronic grade materials
Hunan Huacheng AntimonyCesium compounds from lepidoliteByproduct cesium recovery

🇬🇧 United Kingdom

CompanyProduct FormsSpecialties
Alfa Aesar (Thermo Fisher)All cesium compounds, metalResearch chemicals, high purity

🇯🇵 Japan

CompanyProduct FormsSpecialties
Tokyo Chemical Industry (TCI)High-purity cesium compoundsReagent grade, certified materials
Kanto ChemicalCesium salts, solutionsElectronic and optical grade

Market demand by product form

Product FormGlobal Market SizeUSA MarketChina MarketGrowth Rate (CAGR)
Cesium Formate (Drilling)$285 million45% share12% share6.5%
Cesium Compounds (Chemical)$125 million22% share35% share4.2%
Cesium Metal$45 million38% share28% share5.8%
Optical Cesium (CsI, CsBr)$65 million30% share25% share7.2%
Medical/Pharma Grade$38 million35% share20% share8.5%
Catalyst Applications$52 million25% share30% share5.5%
Atomic Clock/Quantum$28 million42% share18% share12.5%

Moles per kilogram

Product FormFormulaMW (g/mol)Moles/kg
Cesium MetalCs132.917.52
Cesium ChlorideCsCl168.365.94
Cesium CarbonateCs₂CO₃325.823.07
Cesium HydroxideCsOH149.916.67
Cesium FormateHCOOCs177.925.62
Cesium NitrateCsNO₃194.915.13
Cesium IodideCsI259.813.85

References

No citations on this page yet. References will appear here once enrichment runs.

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