Crystal structure
No drawing available
General
other names
Ratio formula PbSiO 3
Brief description

white solid

External identifiers / databases
 CAS number 10099-76-0 EC number 233-246-4 ECHA InfoCard 100.030.211 PubChem 61535 Wikidata Q18212107
properties
Molar mass 283.28 g mol −1
Physical state

firmly

density

6.49 g cm −3

Melting point

766 ° C

solubility

almost insoluble in water

safety instructions
GHS labeling of hazardous substances

danger

H and P phrases H: 360Df-332-302-373-410
P: ?
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Lead silicate is an inorganic chemical compound of lead from the group of silicates . In addition to lead silicate, there are other silicates such as lead orthosilicate , Pb 2 SiO 4 .

## Occurrence

Lead silicate occurs naturally in the form of the mineral alamosite .

## Extraction and presentation

Lead silicate can be obtained by reacting silicon dioxide with lead (II) oxide or lead (II) sulfate .

${\ displaystyle \ mathrm {PbO + SiO_ {2} \ longrightarrow PbSiO_ {3}}}$
${\ displaystyle \ mathrm {2 \ PbSO_ {4} +2 \ SiO_ {2} \ longrightarrow 2 \ PbSiO_ {3} +2 \ SO_ {2} + O_ {2}}}$

## properties

Lead silicate is a white solid that is insoluble in water. One stable and two metastable modifications of the compound are known. The stable modification has a monoclinic crystal structure with the space group P 2 / n (space group no. 13, position 2) and the lattice parameters a = 1123 pm , b = 708 pm, c = 1226 pm and β = 113 ° 15 'as well as twelve Formula units per unit cell .

## use

Lead silicate has been used in paints and as a heat stabilizer.

## Individual evidence

1. a b c d Dale L. Perry: Handbook of Inorganic Compounds, Second Edition . CRC Press, 2011, ISBN 978-1-4398-1462-8 , pp. 485 ( limited preview in Google Book search).
2. a b Entry on lead silicate in the GESTIS substance database of the IFA , accessed on February 1, 2016(JavaScript required) .
3. ^ A b c Richard J. Lewis, Sr .: Hazardous Chemicals Desk Reference . John Wiley & Sons, 2008, ISBN 0-470-33445-2 , pp. 832 ( limited preview in Google Book search).
4. ^ Bernard Moody: Comparative Inorganic Chemistry . Elsevier, 2013, ISBN 978-1-4832-8008-0 , pp. 331 ( limited preview in Google Book search).
5. ^ Helmut Schrätze, Karl Ludwig Weiner: Mineralogie: A textbook on a systematic basis . Walter de Gruyter, 1981, ISBN 978-3-11-006823-8 , pp. 206 ( limited preview in Google Book search).
6. ML Boucher, Donald R. Peacor: The crystal structure of alamosite, PbSiO 3 . In: Journal of Crystallography . 126, 1968, pp. 98-111, doi : 10.1524 / zkri.1968.126.1-3.98 .