Lead(II) acetate

Lead(II) acetate
Names
	IUPAC name Lead(II) acetate
	Systematic IUPAC name Lead(II) ethanoate
	Other names Plumbous acetate, Salt of Saturn, Sugar of Lead, Lead diacetate
Identifiers
CAS Number	301-04-2 ; 6080-56-4 (trihydrate) ; 1335-32-6 (basic) ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:31767 ;
ChEMBL	ChEMBL1909062 ;
ChemSpider	8956;
ECHA InfoCard	100.005.551
EC Number	206-104-4;
MeSH	lead+acetate
PubChem CID	16685321;
RTECS number	OF8050000;
UNII	KL498O6790 ; RX077P88RY (trihydrate) ; BW7DT27250 (basic) ;
CompTox Dashboard (EPA)	DTXSID6020773 ;
	InChI InChI=1S/2C2H4O2.Pb/c21-2(3)4;/h21H3,(H,3,4);/q;;+2/p-2 Key: GUWSLQUAAYEZAF-UHFFFAOYSA-L ;
	SMILES CC(=O)[O-].CC(=O)[O-].[Pb+2];
Properties
Chemical formula	Pb(C2H3O2)2
Molar mass	325.29 g/mol (anhydrous); 379.33g/mol (trihydrate)
Appearance	White powder or colourless, efflorescent crystals
Odor	Slightly acetic
Density	3.25 g/cm3 (20 °C, anhydrous); 2.55 g/cm3 (trihydrate); 1.69 g/cm3 (decahydrate)
Melting point	280 °C (536 °F; 553 K) (anhydrous); 75 °C (167 °F; 348 K); (trihydrate) decomposes at ≥ 200 °C; 22 °C (72 °F; 295 K); (decahydrate)
Boiling point	Decomposes
Solubility in water	Anhydrous:; 19.8 g/100 mL (0 °C); 44.31 g/100 mL (20 °C); 69.5 g/100 mL (30 °C); 218.3 g/100 mL (50 °C)
Solubility	Anhydrous and trihydrate are soluble in alcohol, glycerol
Solubility in methanol	Anhydrous:; 102.75 g/100 g (66.1 °C); Trihydrate:; 74.75 g/100 g (15 °C); 214.95 g/100 g (66.1 °C)
Solubility in glycerol	Anhydrous:; 20 g/100 g (15 °C); Trihydrate:; 143 g/100 g (20 °C)
Magnetic susceptibility (χ)	−89.1·10−6 cm3/mol
Refractive index (nD)	1.567 (trihydrate)
Structure
Crystal structure	Monoclinic (anhydrous, trihydrate); Rhombic (decahydrate)
Thermochemistry
Std enthalpy of; formation (ΔfH⦵298)	−960.9 kJ/mol (anhydrous); −1848.6 kJ/mol (trihydrate)
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Neurotoxic, probable human carcinogen
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H360, H373, H410
Precautionary statements	P201, P273, P308+P313, P501
NFPA 704 (fire diamond)	2 1 1
Flash point	Non-flammable
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	400 mg/kg (mice, oral)
LCLo (lowest published)	300 mg/kg (dog, oral)
Related compounds
Other cations	Lead(IV) acetate
	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) acetate, also known as lead acetate, lead diacetate, plumbous acetate, sugar of lead, lead sugar, salt of Saturn, or Goulard's powder, is a white crystalline chemical compound with a slightly sweet taste. Its chemical formula is usually expressed as Pb(CH₃COO)₂ or Pb(OAc)₂, where Ac represents the acetyl group. Like many other lead compounds, it causes lead poisoning. Lead acetate is soluble in water and glycerin. With water it forms the trihydrate, Pb(OAc)₂·3H₂O, a colourless or white efflorescent monoclinic crystalline substance.

The substance is used as a reagent to make other lead compounds and as a fixative for some dyes. In low concentrations, it formerly served as the principal active ingredient in progressive types of hair colouring dyes. Lead(II) acetate is also used as a mordant in textile printing and dyeing, and as a drier in paints and varnishes. It was historically used as a sweetener and preservative in wines and in other foods and for cosmetics.

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