Lead titanate

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Lead titanate
Tetragonal unit cell of lead titanate
Names
Other names
Lead(II) titanate
Lead titanium oxide
Lead(II) titanium oxide
Identifiers
12060-00-3 YesY
PubChem 16211560
Properties
PbTiO3
Molar mass 303.09 g/mol
Appearance Yellow powder
Density 7.52 g/cm3
Insoluble
Hazards
Main hazards Toxic (T)
Dangerous for the environment (N)
May damage fertility or unborn child
R-phrases R20/22, R33, R50/53, R61, R62[1]
S-phrases S45, S53, S60, S61[1]
NFPA 704
Flammability code 0: Will not burn. E.g., water Health code 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g., chloroform Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
Lethal dose or concentration (LD, LC):
12000 mg/kg (rat)
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).
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Infobox references

Lead(II) titanate is an inorganic compound with the chemical formula PbTiO3. It is the lead salt of titanic acid and has a high ratio of k33 to kp with a high kt. Lead(II) titanate is a yellow powder that is insoluble in water.

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[ZrxTi1-x]O3 0≤x≤1, PZT) system, which is technologically one of the most important ferroelectric and piezoelectric ceramics.

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

Toxicity[edit]

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]

References[edit]

  1. ^ a b Alfa Aesar http://www.alfa.com/en/GP100w.pgm?DSSTK=035671
  2. ^ Noheda, Cereceda, Iglesias, Lifante, Gonzalo, Chen and Wang, Phys. Rev. B 51, 16388 (1995)
  3. ^ Radusinović, Dušan and Markov, Cvetko "Macedonite - lead titanate: a new mineral", American Mineralogist 56, 387-394 (1971), http://www.minsocam.org/ammin/AM56/AM56_387.pdf
  4. ^ Burke, E.A.J. and Kieft, C. "Second occurrence of makedonite, PbTiO3, Långban, Sweden", Lithos 4, 101-104 (1971)
  5. ^ http://www.alfa.com/content/msds/USA/35671.pdf