English to German Science Chemistry; Chem Sci/Eng

Wet crude selenium (To process ; To refine) ; Crude selenium (Wet, dry, pigment grade dry) ;
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Raw material in selenium recovery.
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Rectifier (Electrical industries) ; Catalyst (Chemical industries) ; Steel alloy ; Production of dyes and pigments ; Glass production ; Photographic developer ; Manufacturing of pharmaceutical and personal care products.
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Selenium (***Shot*** ; Lump)
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Very reactive with : Acids. Liberates hydrogen, hydrides. Corrosive (Eyes, skin), irritant, sensitising. Gastro-intestinal or respiratory tract irritation.

Is there a certain term used for 'selenium shot' and 'selenium lump'? Any suggestions?