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Physical & Chemical properties

Appearance / physical state / colour

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Administrative data

Link to relevant study record(s)

Description of key information

Residues remaining after leaching various residues from lead refining with sodium hydroxide to recover tellurium. Consist primarily of Tl, Cu, Pb, Se, Ag, sodium sulfate, sodium silicate and sodium hydroxide. (US EPA, Substance registry service; ESIS)

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:
solid

Additional information