Lead (II) carbonate
Structural formula | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
General | |||||||||||||||||||
Surname | Lead (II) carbonate | ||||||||||||||||||
other names |
|
||||||||||||||||||
Molecular formula | PbCO 3 | ||||||||||||||||||
Brief description |
white, odorless solid |
||||||||||||||||||
External identifiers / databases | |||||||||||||||||||
|
|||||||||||||||||||
properties | |||||||||||||||||||
Molar mass | 267.21 g · mol -1 | ||||||||||||||||||
Physical state |
firmly |
||||||||||||||||||
density |
6.6 g cm −3 |
||||||||||||||||||
Melting point |
Decomposition: 315 ° C |
||||||||||||||||||
solubility |
almost insoluble in water |
||||||||||||||||||
safety instructions | |||||||||||||||||||
|
|||||||||||||||||||
Toxicological data | |||||||||||||||||||
Thermodynamic properties | |||||||||||||||||||
ΔH f 0 |
−699.1 kJ / mol |
||||||||||||||||||
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Lead carbonate with the empirical formula PbCO 3 is the lead (II) salt of carbonic acid . It is a white, solid, poisonous substance that is almost insoluble in water . It is contained in white lead and occurs naturally as cerussite (white lead ore).
synthesis
In the cold, lead carbonate precipitates from lead-containing solutions, for example from lead (II) acetate solutions, when ammonium carbonate or other carbonates are added . In contrast, basic lead carbonates such as white lead form in the heat .
Individual evidence
- ↑ a b c d e f data sheet lead (II) carbonate (PDF) from Merck , accessed on January 19, 2011.
- ↑ a b Entry on lead (II) carbonate in the GESTIS substance database of the IFA , accessed on December 7, 2019(JavaScript required) .
- ↑ Not explicitly listed in Regulation (EC) No. 1272/2008 (CLP) , but with the specified labeling it falls under the group entry lead compounds with the exception of those named in this annex in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on December 14, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .
- ↑ David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Standard Thermodynamic Properties of Chemical Substances, pp. 5-20.