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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 ...
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![]() 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: | |
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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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