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PbCl 2 is used in synthesis of lead(IV) chloride (PbCl 4): Cl 2 is bubbled through a saturated solution of PbCl 2 in aqueous NH 4 Cl forming [NH 4] 2 [PbCl 6]. The latter is reacted with cold concentrated sulfuric acid (H 2 SO 4) forming PbCl 4 as an oil. [10] Lead(II) chloride is the main precursor for organometallic derivatives of lead, such ...
Lead readily forms an equimolar alloy with sodium metal that reacts with alkyl halides to form organometallic compounds of lead such as tetraethyllead. [15] The Pb–C bond energies in TML and TEL are only 167 and 145 kJ/mol; the compounds thus decompose upon heating, with first signs of TEL composition seen at 100 °C (210 °F).
Eutectic alloys for soldering, both traditional alloys composed of lead (Pb) and tin (Sn), sometimes with additional silver (Ag) or gold (Au) — especially Sn 63 Pb 37 and Sn 62 Pb 36 Ag 2 alloy formula for electronics - and newer lead-free soldering alloys, in particular ones composed of tin, silver, and copper (Cu) such as Sn 96.5 Ag 3.5.
Organ pipes are often made from a lead alloy, mixed with various amounts of tin to control the tone of each pipe. [231] [232] Lead is an established shielding material from radiation in nuclear science and in X-ray rooms [233] due to its denseness and high attenuation coefficient. [234] Molten lead has been used as a coolant for lead-cooled ...
Phase behavior Triple point? K (? °C), ? Pa Critical point? K (? °C), ? Pa Std enthalpy change of fusion, Δ fus H o? kJ/mol Std entropy change of fusion, Δ fus S oJ/(mol·K)
Organolead compounds can be derived from Grignard reagents and lead chloride. For example, methylmagnesium chloride reacts with lead chloride to tetramethyllead, a water-clear liquid with boiling point 110 °C and density 1.995 g/cm 3. Reaction of a lead(II) source with sodium cyclopentadienide gives the lead metallocene, plumbocene.
A sort made from type metal. In printing, type metal refers to the metal alloys used in traditional typefounding and hot metal typesetting.Historically, type metal was an alloy of lead, tin and antimony in different proportions depending on the application, be it individual character mechanical casting for hand setting, mechanical line casting or individual character mechanical typesetting and ...
In 1853, German chemist Karl Jacob Löwig (1803–1890) first prepared what he claimed was Pb 2 (C 2 H 5) 3 from ethyl iodide and an alloy of lead and sodium. [97] In 1859, English chemist George Bowdler Buckton (1818–1905) reported what he claimed was Pb(C 2 H 5) 2 from zinc ethyl (Zn(C 2 H 5) 2) and lead(II) chloride. [98]