Lead(II) acetate

Lead(II) acetate ;
Names:	lead(II) acetate; lead dicetate; plumbous acetate; lead(II) ethanoate; lead sugar; sugar of lead; sugar acetate; salt of Saturn; Goulard's powder;
Formula:	Pb(CH3COO)2 (anhydrous); Pb(CH3COO)2 · 3H2O (trihydrate);
Molar mass:	325.288 g/mol (anhydrous); 379.332 g/mol (trihydrate);
Density:	3.25 g/cm3 (anhydrous); 2.55 g/cm3 (trihydrate);
Crystal system:	monoclinic (trihydrate); a=15.85 Å, b=7.3 Å, c=9.1 Åα=90°, β=109.8°, γ=90°;
Shapes:	https://en.crystalls.info/w/uploads/media/a/a4/Truncated_tetragonal_bipyramid.json Truncated tetragonal bipyramid https://en.crystalls.info/w/uploads/media/6/6b/Prolongated_hexagonal_prism.json Prolongated hexagonal prism https://en.crystalls.info/w/uploads/media/f/f8/Prolongated_tetragonal_pedion.json Prolongated tetragonal pedion ;
Color:	colorless;
Melting point:	280 °C553.15 K <br />536 °F <br />995.67 °R <br /> (anhydrous); 75 °C348.15 K <br />167 °F <br />626.67 °R <br /> (trihydrate);
Magnetic properties:	diamagnetic;
Stability:	erodes during a day (trihydrate);
Hardness:	fragile;
Toxicity:	moderately toxic; LD50=300mg/kg

Description

Organic compound, salt of bivalent metal lead and organic acetic acid. From water solutions crystallizes as trihydrate.

Precursors

Reaction between lead(II) oxide, hydroxide or carbonate and acetic acid

Chemical equation:

2CH₃COOH + PbO = Pb(CH₃COO)₂ + H₂O

2CH₃COOH + Pb(OH)₂ = Pb(CH₃COO)₂ + 2H₂O

2CH₃COOH + PbCO₃ = Pb(CH₃COO)₂ + 2H₂O + CO₂↑

For preparation of 100.00g of lead(II) acetate

trihydratetrihydrate
anhydrous

а 70.44g of carbonate or 63.59g of hydroxide or 58.84g of oxide and 45.23g of

70%70%
30%
9%

acetic acid is required.

Add acid to the flask, then add small parts of lead compound with stirring until it will totally dissolve or, if you use carbonate, until carbon dioxide emission will stop. After reaction will stop, filter the solution and use it for crystal growing.

Reaction between pure lead powder and acetic acid

This process is enough slow, but with heating and under the influence of athospheric oxygen or other oxidizers it becomes much faster. The best result gives using a chlorine bleach..
Chemical equation:

2CH₃COOH + Pb + NaClO = Pb(CH₃COO)₂ + NaCl + H₂O

For preparation of 100.00g of lead(II) acetate

trihydratetrihydrate
anhydrous

а 54.62g of lead pure, 490.61g of 4%4% bleach and 45.23g of

70%70%
30%
9%

acetic acid is required.

Add hot acid solution to the flask, then add bleach and lead pieces, shavings or powder and stir and heat it until gas emission will stop.

Influence of pH level

Decreasing pH level with, for example, acetic acid, leads to growing more flat crystals.

Storage conditions

For crystal storing use hermetic vessel with wadding moistened with such solution near the crystal. You can use such alternatives as vessel with vaseline or vegetable oil, organic non-hygroscopic solvent (kerosene or liquid paraffin). Also you can use acrylate polymer or another kinds of solidifying plastic.

Solubility

TableGraph

Temperature	g/`100,00` g water		g/`100,00` g ethanol	g/`100,00` g methanol		g/`100,00` g glycerol		g/`100,00` g formic acid 95%
Temperature	(anhydrous)	(trihydrate)	(anhydrous)	(anhydrous)	(trihydrate)	(anhydrous)	(trihydrate)	(anhydrous)
0°C273.15 K <br />32 °F <br />491.67 °R <br />	`19.8`	`~23.9`
10°C283.15 K <br />50 °F <br />509.67 °R <br />	`29.5`	`~36.2`
15°C288.15 K <br />59 °F <br />518.67 °R <br />				`~35.73`	`74.75`	`20`
20°C293.15 K <br />68 °F <br />527.67 °R <br />	`44.31`	`~55.8`					`143`
25°C298.15 K <br />77 °F <br />536.67 °R <br />	`55.2`	`~70.9`	`0.4`					`0.99`
30°C303.15 K <br />86 °F <br />545.67 °R <br />	`69.5`	`~91.6`
40°C313.15 K <br />104 °F <br />563.67 °R <br />	`116`	`~167.6`
50°C323.15 K <br />122 °F <br />581.67 °R <br />	`218.3`	`~399.4`
70°C343.15 K <br />158 °F <br />617.67 °R <br />				`102.75`	`214.95`

Soluble in acetic acid and isopropanol. Slightly soluble in ethanol.

Gallery

Video

Sources

Acetates

Salts

Calcium acetate (Ca(CH₃COO)₂) • Copper(II) acetate (Cu(CH₃COO)₂) • Chromium(II) acetate (Cr(CH₃COO)₂) • Gadolinium acetate (Gd(CH₃COO)₃) • Dysprosium acetate (Dy(CH₃COO)₃) • Holmium acetate (Ho(CH₃COO)₃) • Iron(II) acetate (Fe(CH₃COO)₂) • Lead(II) acetate (Pb(CH₃COO)₂) • Manganese(II) acetate (Mn(CH₃COO)₂) • Neodymium acetate (Nd(CH₃COO)₃) • Nickel acetate (Ni(CH₃COO)₂) • Samarium acetate (Sm(CH₃COO)₃) • Strontium acetate (Sr(CH₃COO)₂) • Sodium acetate (NaCH₃COO) • Zinc acetate (Zn(CH₃COO)₂)

Double Salts

Copper-calcium acetate (CuCa(CH₃COO)₄) • Uranyl-sodium acetate (NaUО2(CH₃COO)₃) • Uranyl-zinc-sodium acetate (NaZn(UO₂)₃(CH₃COO)₉)

Lead compounds
Lead (Pb) • Lead(II) acetate (Pb(CH₃COO)₂) • Lead(II) citrate (Pb₃(C₆H₅O₇)₂) • Lead(II) chloride (PbCl₂) • Lead(II) formate (Pb(COOH)₂) • Lead(II) iodide (PbCO₃) • Lead(II) nitrate (Pb(NO₃)₂) • Lead(II) tartrate (PbC₄H₄O₆)

Lead(II) acetate
Names:	lead(II) acetate lead dicetate plumbous acetate lead(II) ethanoate lead sugar sugar of lead sugar acetate salt of Saturn Goulard's powder
Formula:	Pb(CH₃COO)₂ (anhydrous) Pb(CH₃COO)₂ · 3H₂O (trihydrate)
Molar mass:	325.288 g/mol (anhydrous) 379.332 g/mol (trihydrate)
Density:	3.25 g/cm³ (anhydrous) 2.55 g/cm³ (trihydrate)
Crystal system:	monoclinic (trihydrate) a=15.85 Å, b=7.3 Å, c=9.1 Åα=90°, β=109.8°, γ=90°
Shapes:	Truncated tetragonal bipyramid Prolongated hexagonal prism Prolongated tetragonal pedion
Color:	colorless
Melting point:	280 °C553.15 K <br />536 °F <br />995.67 °R <br /> (anhydrous) 75 °C348.15 K <br />167 °F <br />626.67 °R <br /> (trihydrate)
Magnetic properties:	diamagnetic
Stability:	erodes during a day (trihydrate)
Hardness:	fragile
Toxicity:	moderately toxic LD₅₀=300mg/kg