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Arsenic (As) Metal

Arsenic appears in three allotropic forms: yellow, black and grey; the stable form is a silver-gray, brittle crystalline solid. It tarnishes rapidly in air, and at high temperatures burns forming a white cloud of arsenic trioxide.The metallic form is brittle, tharnishes and when heated it rapidly oxidizes to arsenic trioxide, which has a garlic odor. The non metallic form is less reactive but will dissolve when heated with strong oxidizing acids and alkalis.

Basic Information:

Name: Arsenic
Symbol: As
Atomic Number: 33
Atomic Mass: 74.9216 amu
Melting Point: 817.0 °C (1090.15 °K, 1502.6 °F)
Boiling Point: 613.0 °C (886.15 °K, 1135.4 °F)

Number of Protons/Electrons: 33
Number of Neutrons: 42
Classification: Metalloid
Crystal Structure: Rhombohedral
Density @ 293 K: 5.72 g/cm3
Color: Gray

Arsenic (As) Metals 

Purity--- 99.99%(Ag,Al,Ca,Cu,Fe,Mg,Ni,Pb,Zn,Se,Cr,Sb,S total <100ppm)

               99.999%(Ag,Al,Ca,Cu,Fe,Mg,Ni,Pb,Zn,Se,Sb,S,Cr,C total <10ppm)

                99.9999% (Ag,Al,Ca,Cu,Fe,Mg,Ni,Pb,Zn,Se,C total <1ppm)   

Shape--- Gray white, lustrous, no black film on surface, Chunk or bar crystal, 

Application --- High pure alloy, thermoelectric refrigeration materials, photoelectric materials, microwave materials, dopant for semiconductors (Si, Ge), solder, GaAs and some III-V family compound semiconductors, etc.




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