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Formula: As
Form: Pellet/Lump
Material: Arsenic
CAS Number: 7440-38-2
Commodity: Metals
Maximum Lump Size: 20mm
Hazard Pictogram: GHS06, GHS09
Goodfellow High-Purity Arsenic Pellets (As pellets, As lumps) are essential for advanced semiconductor doping, particularly in gallium arsenide (GaAs) and other III-V compound semiconductors. These high-performance materials are crucial for RF devices, high-frequency electronics, and solar cells. Arsenic also plays a key role in infrared optical materials, including chalcogenide glasses for infrared fiber optics used in aerospace and defense technologies. In materials science and nanotechnology, arsenic is utilized in the synthesis of quantum materials and optoelectronic devices, with applications ranging from lasers to photodetectors. It is also integral to thin-film deposition and electrodeposition processes for cutting-edge materials research. Arsenic compounds are explored in environmental research for heavy metal remediation, offering solutions for contaminated water and soil purification. Additionally, arsenic toxicity studies help evaluate its biological effects, contributing to the development of safety measures and mitigation strategies. With various purities available, Goodfellow’s high-purity arsenic pellets meet the needs of researchers, scientists, and industrial applications, driving innovation across electronics, materials engineering, and environmental technologies.
Technical Data Sheet Safety Data Sheet Tolerance Properties

Acute toxicity

Hazardous to the environment

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Tolerances

Pellet/Lump
Maximum Lump Size Nominal

Material Properties for Metals

Atomic Properties
Element Value
Atomic number 33
Crystal structure Rhombohedral
Electronic structure Ar 3d¹⁰ 4s² 4p³
Valences shown -3, 0, 3, 5
Atomic weight( amu ) 74.9216
Thermal neutron absorption cross-section( Barns ) 4.3
Photo-electric work function( eV ) 5.1
Atomic radius - Goldschmidt( nm ) 0.125
Ionisation potential( No./eV ) 2/ 18.6
Ionisation potential( No./eV ) 1/ 9.81
Ionisation potential( No./eV ) 5/ 62.6
Ionisation potential( No./eV ) 3/ 28.4
Ionisation potential( No./eV ) 4/ 50.1
Ionisation potential( No./eV ) 6/ 128
Mechanical Properties
Element Value
Material condition Polycrystalline
Bulk modulus( GPa ) 22
Hardness - Vickers( kgf mm⁻² ) 57-69
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 33.3@20@20°C
Physical Properties
Element Value
Boiling point( C ) 616
Density( gcm⁻³ ) 5.73@20°C
Thermal Properties
Element Value
Melting point( C ) 300
Latent heat of fusion( J g⁻¹ ) 370
Specific heat( J K⁻¹ kg⁻¹ ) 328@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 50.2@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 5.6@0-100°C

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