13463-30-4

Usage

Chemical Properties

yellow oily liquid [CRC10]Melting Point: ?15 [CRC10]

Physical properties

Yellow oily liquid; fumes in air; unstable at ordinary temperatures; solidifies at -15°C; decomposes at 50°C.

Preparation

Lead tetrachloride may be prepared by dissolving lead dioxide in cold concentrated hydrochloric acid at 0°C: PbO2 + 4HCl → PbCl4 + 2H2O However, in the above method some amount of lead dichloride may form, especially if the temperature is above 0°C. The preferred preparation method is to introduce chlorine into the solution while dissolving lead dioxide in cold concentrated HCl. This prevents decomposition of PbCl4 to PbCl2 and enhances the formation of chloroplumbic acid, H2PbCl6 in solution. Addition of ammonium chloride precipitates out yellow ammonium chloroplumbate, (NH4)2PbCl6 , which is filtered out. The yellow precipitate, on treatment with cold concentrated sulfuric acid, forms lead tetrachloride, which separates out as a yellow oily liquid. The reactions are: PbO2 + 6HCl → H2PbCl6 + 2H2O H2PbCl6 + 2NH4Cl → (NH4)2PbCl6 + 2HCl (NH4)2PbCl6 + H2SO4 → PbCl4 + (NH4)2SO4 + 2HCl

InChI:InChI=1/4ClH.Pb/h4*1H;/q;;;;+4/p-4

Upstream product

• 7439-92-1 lead 
• 7782-50-5 chlorine 
• 7758-95-4 lead(II) chloride 
• 7647-01-0 hydrogenchloride 
• 14336-71-1 calcium chloride 

Downstream Products

• 10026-07-0 tellurium tetrachloride 
• 7758-95-4 lead(II) chloride 
• 7647-01-0 hydrogenchloride 
• 28696-49-3 {PbCl₂(C₁₄H₁₂NO₂)2} 
• 28548-12-1 {PbCl₂(C₁₄H₁₂NO)2} 
• 28548-10-9 {PbCl₂(C₁₃H₉ClNO)2} 
• 28548-11-0 {PbCl₂(C₁₃H₁₀NO)2} 
• 3087-18-1 PbCl₄*C₆H₅Cl 
• 7782-50-5 chlorine 

Relevant academic research and scientific papers

Thermal behavior of galena ore in chlorine atmospheres

The thermal behavior of a purified galena in a chlorine surrounding was determined. The kinetic of the chlorination of galena and the stoichiometry of this reaction between 723 to 973 K (450 to 700°C) were measured by thermogravimetry. The microstructural characterization of the solid residues were determined by SEM, EDXS and XRD. The ΔHvap of the produced lead chloride volatilization was obtained by the application of Clausius-Clapeyron equation considering the process in an equilibrium state.

S-(ω-hydroxyalkyl) esters of thioacrylic and thiomethacrylic acids

Compounds are described which are S-(ω-hydroxyalkyl) esters of thioacrylic and thiomethacrylic acids. The compounds have the formula: STR1 wherein: R is hydrogen or methyl; and n is 1, 2 or 3. These compounds can be used as conditioners to enhance the wettability of dentinal surfaces, can be employed as chemical tracers to characterize the wetting of dentinal surfaces, and can be copolymerized in situ to form potential dentinal bonding systems. The compounds can also be homopolymerized and copolymerized to form other useful products.

Process for producing aromatic aldehydes

In a process for producing aromatic aldehydes by reacting chlorinated methylbenzenes with nitric acid, the improvement wherein a lead compound is added to the residue left after separation and recovery of the resulting aromatic aldehydes from the reaction mixture thereby to remove a chlorine ion present in the residue as a precipitate of lead chloride, and the residue left after removal of the lead chloride is recycled to the reaction of the chlorinated methylbenzenes with nitric acid.