Lead titanate

Lead(II) titanate is an inorganic compound with the chemical formula PbTiO₃. It is the lead salt of titanic acid. Lead(II) titanate is a yellow powder that is insoluble in water.

Lead titanate

Names
Other names Lead(II) titanate Lead titanium oxide Lead(II) titanium oxide
Identifiers
CAS Number	12060-00-3 N
3D model (JSmol)	Interactive image
ChemSpider	17339539
ECHA InfoCard	100.031.841
EC Number	235-038-9
PubChem CID	16211560
CompTox Dashboard (EPA)	DTXSID1093963
InChI InChI=1S/3O.Pb.Ti/q;2*-1;+2; Key: NKZSPGSOXYXWQA-UHFFFAOYSA-N
SMILES [O-][Ti](=O)[O-].[Pb+2]
Properties
Chemical formula	PbTiO3
Molar mass	303.09 g/mol
Appearance	Yellow powder
Density	7.52 g/cm3
Solubility in water	Insoluble
Hazards
GHS labelling:
Pictograms	[1]
Signal word	Danger[1]
Hazard statements	H302, H332, H360, H373, H410[1]
Precautionary statements	P201, P261, P273, P304+P340, P308+P313, P312, P391[1]
NFPA 704 (fire diamond)	2 0 0
Lethal dose or concentration (LD, LC):
LD50 (median dose)	12000 mg/kg (rat)
Safety data sheet (SDS)	MSDS
Related compounds
Other anions	Lead dioxide Lead acetate
Other cations	Caesium titanate Iron(II) titanate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

At high temperatures, lead titanate adopts a cubic perovskite structure. At 760 K,^[2] the material undergoes a second order phase transition to a tetragonal perovskite structure which exhibits ferroelectricity. Lead titanate is one of the end members of the lead zirconate titanate (Pb[Zr_xT_1−x]O₃, 0 ≤ x ≤ 1, PZT) system, which is technologically one of the most important ferroelectric and piezoelectric ceramics; PbTiO₃ has a high ratio of k33 to kp with a high kt^[clarify].

Lead titanate occurs in nature as mineral macedonite.^[3][4]

Toxicity

Lead titanate is toxic, like other lead compounds. It irritates skin, mucous membranes and eyes. It may also cause harm to unborn babies and might have effects on fertility.^[5]

Solubility in water

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 apparently incongruent and was quantified as the analytical concentration of Pb.^[6]