rec_5
(5) Lead oxides (PbO or Pb_(3)O_(4)) are used as an intermediate for the chemical synthesis of lead crystal glass (LCG). LCG is used in electrical and electronic equipment because its unique combinations of processing (cooling time, working range), optical (refractive index, dispersion) and decorative (Vicker's hardness) properties allows the manufacturing of electrical and electronic articles which could not be produced otherwise, such as specific luminaires and chandeliers, electrified mirrors, clocks and watches, digital photo frames and building materials (illuminated blocks).
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Source: EUR-Lex (Cellar) · retrieved 2026-10-18 · Text as adopted (Official Journal); later amendments are not incorporated in this text.