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
Check Digit Verification of cas no
The CAS Registry Mumber 13463-30-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,4,6 and 3 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 13463-30:
(7*1)+(6*3)+(5*4)+(4*6)+(3*3)+(2*3)+(1*0)=84
84 % 10 = 4
So 13463-30-4 is a valid CAS Registry Number.
InChI:InChI=1/4ClH.Pb/h4*1H;/q;;;;+4/p-4
13463-30-4Relevant articles and documents
Fischer, W. W.
, p. 282 - 285 (1879)
Thermal behavior of galena ore in chlorine atmospheres
Luengos,Ambrosio,Bohe,Pasquevich
, p. 775 - 789 (2008/10/08)
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.
Process for producing aromatic aldehydes
-
, (2008/06/13)
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.
