Lead(II) sulfate
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Lead(II) sulfate (PbSO4) is a white solid, which appears white in microcrystalline form. It is also known as fast white, milk white, sulfuric acid lead salt or anglesite.
Quick Facts Names, Identifiers ...
Names | |
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IUPAC name
lead(II) sulfate | |
Other names
Anglesite, fast white, milk white, plumbous sulfate | |
Identifiers | |
3D model (JSmol) |
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ChemSpider |
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ECHA InfoCard | 100.028.362 |
EC Number |
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PubChem CID |
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UNII | |
UN number | 1759 1794 |
CompTox Dashboard (EPA) |
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Properties | |
PbSO4 | |
Molar mass | 303.26 g/mol[1][2] |
Appearance | white solid |
Density | 6.29 g/cm3[3] |
Melting point | 1,087 °C (1,989 °F; 1,360 K) decomposes |
0.0032 g/100 mL (15 °C) 0.0404 g/100 mL (25 °C)[4] | |
Solubility product (Ksp) |
2.13 x 10−8 (20 °C) |
Solubility | insoluble in alcohol
soluble in ammonium acetate (≥ 6 mol/L) soluble in ammonium tartrate in presence of ammonium chloride and ammonia |
−69.7·10−6 cm3/mol | |
Refractive index (nD) |
1.877 |
Structure | |
orthorhombic, barite | |
Thermochemistry | |
Heat capacity (C) |
103 J/degree mol |
Std molar entropy (S⦵298) |
149 J·mol−1·K−1[5] |
Std enthalpy of formation (ΔfH⦵298) |
−920 kJ·mol−1[5] |
Hazards | |
GHS labelling: | |
Danger | |
H302, H332, H360Df, H410 | |
P201, P202, P260, P261, P264, P270, P271, P273, P281, P301+P312, P304+P312, P304+P340, P308+P313, P312, P314, P330, P391, P405, P501 | |
NFPA 704 (fire diamond) | |
Flash point | Non-flammable |
Threshold limit value (TLV) |
0.15 mg/m3 |
Related compounds | |
Other anions |
Lead(II) chloride, Lead(II) bromide, Lead(II) iodide, Lead(II) fluoride |
Other cations |
Tin(II) sulfate, Sodium sulfate, Copper(II) sulfate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Close
It is often seen in the plates/electrodes of car batteries, as it is formed when the battery is discharged (when the battery is recharged, then the lead sulfate is transformed back to metallic lead and sulfuric acid on the negative terminal or lead dioxide and sulfuric acid on the positive terminal). Lead sulfate is poorly soluble in water.