Lead(II) chloride
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Lead(II) chloride (PbCl2) is an inorganic compound which is a white solid under ambient conditions. It is poorly soluble in water. Lead(II) chloride is one of the most important lead-based reagents. It also occurs naturally in the form of the mineral cotunnite.
Quick Facts Names, Identifiers ...
The crystal structure of PbCl2, in the unconventional crystallographic setting Pnam. This corresponds to the standard Pnma setting by switching the labels on the b and c axes. | |
Names | |
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IUPAC names
Lead(II) chloride Lead dichloride | |
Other names | |
Identifiers | |
3D model (JSmol) |
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ChEBI | |
ChemSpider |
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ECHA InfoCard | 100.028.950 |
EC Number |
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PubChem CID |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
PbCl2 | |
Molar mass | 278.10 g/mol |
Appearance | white odorless solid |
Density | 5.85 g/cm3 |
Melting point | 501 °C (934 °F; 774 K) |
Boiling point | 950 °C (1,740 °F; 1,220 K) |
0.99 g/100 mL (20 °C)[1] | |
Solubility product (Ksp) |
1.7×10−5 (20 °C) |
Solubility | slightly soluble in dilute HCl, ammonia; insoluble in alcohol Soluble in hot water as well as in presence of alkali hydroxide Soluble in concentrated HCl (>6M) |
−73.8·10−6 cm3/mol | |
Refractive index (nD) |
2.199[2] |
Structure[3] | |
Orthorhombic, oP12 | |
Pnma (No. 62) | |
a = 762.040 pm, b = 453.420 pm, c = 904.520 pm | |
Formula units (Z) |
4 |
Thermochemistry | |
Std molar entropy (S⦵298) |
135.98 J K−1 mol−1 |
Std enthalpy of formation (ΔfH⦵298) |
-359.41 kJ/mol |
Hazards[4] | |
GHS labelling: | |
Danger | |
H302, H332, H351, H360, H372, H410 | |
P201, P261, P273, P304+P340, P308+P313, P312, P391 | |
NFPA 704 (fire diamond) | |
Lethal dose or concentration (LD, LC): | |
LDLo (lowest published) |
140 mg/kg (guinea pig, oral)[5] |
Related compounds | |
Other anions |
Lead(II) fluoride Lead(II) bromide Lead(II) iodide |
Other cations |
Lead(IV) chloride Tin(II) chloride Germanium(II) chloride |
Related compounds |
Thallium(I) chloride Bismuth chloride |
Supplementary data page | |
Lead(II) chloride (data page) | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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