Lead(II) chloride

Lead(II) chloride
	; 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
	IUPAC names Lead(II) chloride; Lead dichloride
	Other names Plumbous chloride; Cotunnite; Dichloroplumbylene
Identifiers
CAS Number	7758-95-4 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:88212 ;
ChemSpider	22867 ;
ECHA InfoCard	100.028.950
EC Number	231-845-5;
PubChem CID	166945;
UNII	4IL61GN3YI ;
CompTox Dashboard (EPA)	DTXSID1041059 ;
	InChI InChI=1S/2ClH.Pb/h2*1H;/q;;+2/p-2 Key: HWSZZLVAJGOAAY-UHFFFAOYSA-L ;
	SMILES Cl[Pb]Cl;
Properties
Chemical formula	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)
Solubility in water	0.99 g/100 mL (20 °C)
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)
Magnetic susceptibility (χ)	−73.8·10−6 cm3/mol
Refractive index (nD)	2.199
Structure
Crystal structure	Orthorhombic, oP12
Space group	Pnma (No. 62)
Lattice constant	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
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H302, H332, H351, H360, H372, H410
Precautionary statements	P201, P261, P273, P304+P340, P308+P313, P312, P391
NFPA 704 (fire diamond)	3 0 0
	Lethal dose or concentration (LD, LC):
LDLo (lowest published)	140 mg/kg (guinea pig, oral)
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). verify (what is ?) Infobox references

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.

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