Lead carbonate
In today's world, Lead carbonate has become a topic of great relevance and interest. With the advancement of technology and globalization, Lead carbonate has become increasingly important in people's daily lives. Whether in the work, social or personal sphere, Lead carbonate has become a topic of debate and reflection that crosses all spheres of society. In this article, we will explore the different dimensions and perspectives of Lead carbonate, analyzing its impact on various aspects of people's lives.
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| Names | |
|---|---|
| IUPAC name
Lead(II) carbonate
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| Other names | |
| Identifiers | |
| ChemSpider | |
| ECHA InfoCard | 100.009.041 |
| EC Number |
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PubChem CID
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| RTECS number |
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| UNII | |
CompTox Dashboard (EPA)
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| Properties | |
| PbCO3 | |
| Molar mass | 267.21 g/mol |
| Appearance | White powder |
| Density | 6.582 g/cm3 |
| Melting point | 315 °C (599 °F; 588 K) (decomposes) |
| 0.00011 g/(100 mL) (20 °C) | |
Solubility product (Ksp)
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1.46·10−13 |
| Solubility | insoluble in alcohol, ammonia; soluble in acid, alkali |
| −61.2·10−6 cm3/mol | |
Refractive index (nD)
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1.804[1] |
| Hazards | |
| GHS labelling: | |
  
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| Danger | |
| H302, H332, H360, H373, H410 | |
| P201, P202, P260, P261, P264, P270, P271, P273, P281, P301+P312, P304+P312, P304+P340, P308+P313, P312, P314, P330, P391, P405, P501 | |
| Flash point | Non-flammable |
| Safety data sheet (SDS) | External MSDS |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa).
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Lead(II) carbonate is the chemical compound with the chemical formula PbCO3. It is a white, toxic solid.[2] It occurs naturally as the mineral cerussite.[3]
Structure
Like all metal carbonates, lead(II) carbonate adopts a dense, highly crosslinked structure consisting of intact CO2−3 and metal cation sites. As verified by X-ray crystallography, the Pb(II) centers are seven-coordinate, being surrounded by multiple carbonate ligands. The carbonate centers are bonded bidentate to a single Pb and bridge to five other Pb sites.[4]
Production and use
Lead carbonate is manufactured by passing carbon dioxide into a cold dilute solution of lead(II) acetate, or by shaking a suspension of a lead salt more soluble than the carbonate with ammonium carbonate at a low temperature to avoid formation of basic lead carbonate.[2]
- Pb(CH3COO)2 + [NH4]2CO3 → PbCO3 + 2 [NH4](CH3COO)
Lead carbonate is used as a catalyst to polymerize formaldehyde to poly(oxymethylene). It improves the bonding of chloroprene to wire.[2]
Regulations
The supply and use of this compound is restricted in Europe.[5]
Other lead carbonates
A number of lead carbonates are known:
- White lead, a basic lead carbonate, 2PbCO3·Pb(OH)2
- Shannonite, PbCO3·PbO
- Plumbonacrite, 3PbCO3·Pb(OH)2·PbO[6]
- PbCO3·2PbO
- Abellaite, NaPb2(OH)(CO3)2
- Leadhillite, 2PbCO3·PbSO4·Pb(OH)2
References
- ^ Pradyot Patnaik. Handbook of Inorganic Chemicals. McGraw-Hill, 2002, ISBN 0-07-049439-8
- ^ a b c Carr, Dodd S. (2005). "Lead Compounds". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a15_249. ISBN 978-3-527-30673-2.
- ^ Inorganic Chemistry, Egon Wiberg, Arnold Frederick Holleman Elsevier 2001 ISBN 0-12-352651-5
- ^ Sahl, Kurt (1974). "Verfeinerung der Kristallstruktur von Cerussit, PbCO3". Zeitschrift für Kristallographie. 139 (3–5): 215–222. Bibcode:1974ZK....139..215S. doi:10.1524/zkri.1974.139.3-5.215.
- ^ "EU law - EUR-Lex".
- ^ S.V. Krivovichev and P.C. Burns, "Crystal chemistry of basic lead carbonates. II. Crystal structure of synthetic 'plumbonacrite'." Mineralogical Magazine, 64(6), pp. 1069-1075, December 2000. "Archived copy" (PDF). Archived from the original (PDF) on 2009-05-21. Retrieved 2009-05-21.
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