33 As 74.922

Arsenic

metalloid · Group 15 · Period 4

Atomic properties

Atomic number
33
Z
Atomic weight
74.922[1]
g/mol
Density
5.727 g/cm³
at STP
Melting point
817 °C
at 1 atm
Boiling point
614 °C
at 1 atm
Crystal structure
rhombohedral
Electron config.
[Ar] 3d¹⁰ 4s² 4p³
Oxidation states
-3, +3, +5
most common

Market data

No tradeable futures market for As 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 FormChemical FormulaAs ContentOccurrenceNotes
ArsenopyriteFeAsS46%Hydrothermal veins, gold depositsMost abundant arsenic mineral
RealgarAs₄S₄ (AsS)70%Volcanic sublimations, hot springsRed color, photosensitive
OrpimentAs₂S₃61%Low-temp hydrothermal veinsYellow color, historical pigment
Copper Smelter DustMixed oxides5-20%Byproduct of Cu smeltingMajor commercial source
Primary Arsenic Minerals

Current Market Price: $4,000-5,000/MT for arsenic trioxide (99% purity) Major Global Production: Peru: 27,000 MT (45% of world production) - Leading producer China: 24,000 MT (40% of world production) - Major producer and exporter Morocco: 6,000 MT (10% of world production) - Cobalt-arsenide ores Russia: 1,500 MT - From copper smelting 2025 Global Production: ~60,000 MT arsenic trioxide equivalent Raw Material Form Chemical Formula As Content Occurrence Notes Arsenopyrite FeAsS 46% Hydrothermal veins, gold deposits Most abundant arsenic mineral Realgar As₄S₄ (AsS) 70% Volcanic sublimations, hot springs Red color, photosensitive Orpiment As₂S₃ 61% Low-temp hydrothermal veins Yellow color, historical pigment Copper Smelter Dust Mixed oxides 5-20% Byproduct of Cu smelting Major commercial sou

⚠️ Seawater Arsenic Extraction

Commercial Viability: NOT ECONOMICALLY VIABLE Concentration: 1-2 ppb (0.001-0.002 ppm) - extremely low Chemical Form: As(V) arsenate, As(III) arsenite, organic forms Status: No commercial extraction of arsenic from seawater exists globally. The extremely low concentration makes extraction uneconomical compared to mineral sources. Note: Unlike some elements successfully extracted from seawater, arsenic remains impractical due to its trace concentrations.

Production cost analysis

Cost Component$/MT As₂O₃% of Total CostNotes
Raw Material (Ore/Dust)$800-1,50025-30%Varies by source and As content
Energy (Roasting/Processing)$600-1,00020-25%See detailed breakdown below
Labor$400-60012-15%Specialized handling required
Environmental Controls$800-1,20025-30%Strict emission controls
Other Costs & Overhead$400-70010-15%Maintenance, safety equipment
Total Production Cost$3,000-5,000100%Compare to selling price: $4,000-5,000/MT

Energy consumption breakdown

Process StageTemperatureEnergy TypeKey Operations
Reduction Roasting300-500°CNatural Gas/CoalAs₂O₅ → As₂O₃ sublimation, 98% recovery
Traditional Roasting600-700°CCoal/CokeArsenopyrite oxidation, As₂O₃ volatilization
High-Temp Roasting (old)1000-1100°CCokeComplete arsenic removal, high energy use
Condensation/Collection100-200°CCooling waterAs₂O₃ collection in baghouses/scrubbers
Modern Reduction Roasting Details

Pretreatment: H₂SO₄ addition enhances As removal Reduction: Natural gas or coal reduces As(V) to As(III) Volatilization: As₂O₃ sublimes at 300-400°C Collection: 99% purity As₂O₃ recovered Efficiency: 98% arsenic removal achieved

Environmental Control Energy

Scrubbers: Wet scrubbing systems for gas cleaning Baghouses: 99%+ dust collection efficiency Electrostatic Precipitators: For fine particle removal Waste Treatment: Stabilization of arsenic residues Monitoring: Continuous emission monitoring systems

Commercial forms & specifications

Product FormChemical FormulaMolecular WeightTypical PurityPrice Range (USD/kg)Main Applications
Arsenic TrioxideAs₂O₃197.84 g/mol99.0-99.9%$4.00-5.00Glass decolorizer, wood preservatives, pharmaceuticals
Metallic ArsenicAs74.92 g/mol99-99.99%$1.00-2.00Lead alloys, semiconductors
Arsenic AcidH₃AsO₄·½H₂O150.95 g/mol75% solution$1.50-2.50Wood preservatives, herbicides
Gallium ArsenideGaAs144.64 g/mol99.999-99.9999%$300-800Semiconductors, LEDs, solar cells
Sodium ArsenateNa₃AsO₄·12H₂O424.07 g/mol98-99%$2.00-3.00Herbicides, insecticides
Lead ArsenatePbHAsO₄347.12 g/mol95-98%$1.50-2.50Insecticides (historical)
Calcium ArsenateCa₃(AsO₄)₂398.07 g/mol95-98%$1.20-2.00Insecticides, herbicides
MSMACH₃AsO(ONa)₂161.95 g/mol70-80% solution$3.00-5.00Herbicide (restricted use)
High Purity As (6N)As74.92 g/mol99.9999%$50-60Electronic applications
High Purity As (7N)As74.92 g/mol99.99999%$110-150Semiconductor research

Suppliers by country

🇨🇳 China

CompanyProduct FormsSpecialties
Chenzhou Chenxi Metals Co. LtdAs₂O₃, metallic As, high purity AsWorld's largest As₂O₃ exporter, 99.9% purity
South China Resources EnterprisesAs₂O₃, arsenic compoundsMajor exporter, industrial grade
Xilan Chemicals Co. LtdAs₂O₃, specialty arsenicalsChemical intermediates

🇺🇸 United States

CompanyProduct FormsSpecialties
American ElementsHigh purity As, GaAs, arsenidesAdvanced materials, 99.999%+ purity
ALB Materials Inc.As₂O₃, metallic As, compoundsResearch materials
ProChem Inc.Arsenic compounds, solutionsLaboratory chemicals

🇮🇳 India

CompanyProduct FormsSpecialties
Rajendra Prasad & SonsAs₂O₃, industrial chemicalsEstablished 1965, industrial grade
Suvidhinath LaboratoriesAs₂O₃, lab chemicalsISO certified, reagent grade
Central Drug House LtdArsenic compounds, reagentsPharmaceutical grade
Jigs ChemicalAs₂O₃, specialty chemicalsExport focus

🇮🇹 Italy / 🇪🇺 Europe

CompanyProduct FormsSpecialties
Todini ChemicalsAs₂O₃, metal arsenidesInternational distributor, custom specs
Merck KGaAHigh purity As, compoundsResearch grade, analytical standards
PPM Reinstmetalle (Germany)Ultra-high purity As6N-7N purity for semiconductors

🇲🇦 Morocco

CompanyProduct FormsSpecialties
CTT-ALT (Managem Group)As₂O₃ from cobalt processingByproduct recovery, 99% purity

🇨🇱 Chile / 🇵🇪 Peru

CompanyProduct FormsSpecialties
Various Copper SmeltersAs₂O₃ from flue dustByproduct of copper smelting

Market demand by product form

Application% of Global UseKey ProductsMarket Trends
Wood Preservatives29%CCA (Chromated Copper Arsenate)Declining in developed countries, growing in developing
Agricultural Chemicals45%Herbicides, insecticides, cotton desiccantsPhasing out in many regions
Glass & Ceramics10%Decolorizing agent, specialty glassStable demand
Electronics/Semiconductors8%GaAs, InAs for LEDs, solar cells, ICsGrowing rapidly, high value
Metallurgy5%Lead alloys for batteriesStable to declining
Pharmaceuticals2%APL treatment (Trisenox®)Niche but important
Other1%Research, pigments, specialty usesVaried

Moles per kilogram

Product FormFormulaMW (g/mol)Moles/kg
Metallic ArsenicAs74.9213.35
Arsenic TrioxideAs₂O₃197.845.06
Arsenic Acid (anhydrous)H₃AsO₄141.947.05
Gallium ArsenideGaAs144.646.91
Sodium Arsenate (hydrated)Na₃AsO₄·12H₂O424.072.36

References

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