 | |
| Names | |
|---|---|
| Other names Lead(II) titanate Lead titanium oxide Lead(II) titanium oxide | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider | |
| ECHA InfoCard | 100.031.841 |
| EC Number |
|
| |
| |
| Properties | |
| PbTiO3 | |
| Molar mass | 303.09 g/mol |
| Appearance | Yellow powder |
| Density | 7.52 g/cm3 |
| Insoluble | |
| Hazards | |
| GHS labelling: | |
   [1] | |
| Danger[1] | |
| H302,H332,H360,H373,H410[1] | |
| P201,P261,P273,P304+P340,P308+P313,P312,P391[1] | |
| NFPA 704 (fire diamond) | |
| Lethal dose or concentration (LD, LC): | |
LD50 (median dose) | 12000 mg/kg (rat) |
| Safety data sheet (SDS) | MSDS |
| Related compounds | |
Otheranions | Lead dioxide Lead acetate |
Othercations | Caesium titanate Iron(II) titanate |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Lead(II) titanate is aninorganic compound with thechemical formula PbTiO3. It is theleadsalt oftitanic acid. Lead(II) titanate is a yellow powder that isinsoluble inwater.
At high temperatures, lead titanate adopts a cubicperovskite structure. At 760 K,[2] the material undergoes a second orderphase transition to a tetragonal perovskite structure which exhibits ferroelectricity. Lead titanate is one of the end members of thelead zirconate titanate (Pb[ZrxT1−x]O3,0 ≤x ≤ 1, PZT) system, which is technologically one of the most important ferroelectric andpiezoelectric ceramics;PbTiO3 has a high ratio of k33 to kp with a high kt[clarify].
Lead titanate occurs in nature as mineralmacedonite.[3][4]
Lead titanate is toxic, like other lead compounds. Itirritatesskin,mucous membranes andeyes. It may also cause harm to unborn babies and might have effects on fertility.[5]
The solubility of hydrothermally-synthesized perovskite-phase PbTiO3 in water was experimentally determined at 25 and 80 °C to depend on pH and vary from 4.9x10−4 mol/kg at pH≈3, to 1.9x10−4 mol/kg at pH≈7.7, to "undetectable" (<3.2x10−7 mol/kg) in the range 10<pH<11. At still higher pH values, the solubility increased again. The solubility was apparentlyincongruent and was quantified as the analytical concentration of Pb.[6]
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