Name | Lead titanate |
Synonyms | Lead titanate Lead titanate(IV) Lead(II) titanate lead titanium trioxide LEAD TITANATE, POWDER, lead(4+) tetraoxidotitanium Metatitanic acid lead(II) salt |
CAS | 12060-00-3 |
EINECS | 235-038-9 |
InChI | InChI=1/4O.Pb.Ti/q4*-1;+4;/rO4Ti.Pb/c1-5(2,3)4;/q-4;+4 |
Molecular Formula | O3PbTi |
Molar Mass | 303.07 |
Density | 7.52g/mLat 25°C(lit.) |
Flash Point | 12°(54°F) |
Water Solubility | Insoluble in water. |
Solubility | Soluble in alcohols |
Appearance | Brown to yellowish brown powder |
Specific Gravity | 7.52 |
Color | Yellow |
Storage Condition | Room Temprature |
Sensitive | Moisture Sensitive |
Refractive Index | 2.66 |
MDL | MFCD00011159 |
Risk Codes | R20 - Harmful by inhalation R62 - Possible risk of impaired fertility R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R33 - Danger of cumulative effects R20/22 - Harmful by inhalation and if swallowed. R61 - May cause harm to the unborn child |
Safety Description | S22 - Do not breathe dust. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S28 - After contact with skin, wash immediately with plenty of soap-suds. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S60 - This material and its container must be disposed of as hazardous waste. S53 - Avoid exposure - obtain special instructions before use. |
UN IDs | 2291 |
WGK Germany | 2 |
RTECS | XR1575000 |
TSCA | Yes |
Hazard Class | 3 |
Packing Group | III |
yellow crystals. The relative density was 7. 52. Tetragonal yellow crystals are found below 490 °c and cubic crystals are found above 490 °c. Insoluble in water, soluble in concentrated hydrochloric acid, nitric acid and hydrofluoric acid, respectively, the formation of lead chloride, lead nitrate, lead fluoride and titanium dioxide. Lead titanate is a ferromagnetic material with high Curie temperature and low dielectric constant.
with lead monoxide and titanium dioxide as raw materials, the amounts of lead monoxide and titanium dioxide are put into a ball mill to be pulverized and mixed evenly, and then placed in a calciner to be calcined at 400 ° C, the calcined block was ground and pulverized, and the impurities were removed by acid washing. The product was dried. Alternatively, the lead acetate methanol solution and the tetrabutyl titanate anhydrous ethanol solution are added to the mixer according to the equimolar ratio for thorough mixing, and then heated to 40~45 ℃, the mixed solution and the 30% hydrogen peroxide solution were added to the aqueous ammonia solution with stirring, and a co-precipitation reaction was carried out. The amount of hydrogen peroxide added is preferably such that the molar ratio of hydrogen peroxide to the lead and Titanium compounds is 2.5:1. When the solution is yellow and a dark yellow precipitate is formed, it is necessary to add an appropriate amount of ammonia to adjust the pH value of the solution to about 9. After completion of the co-precipitation reaction. The mixture was stirred for about 10 min. After filtration, multiple washes to neutral. The filter cake is dried at a temperature of about 100 °c to give a brown solid material. After grinding and grinding, the light yellow lead titanate is obtained by calcining at about 650 ℃ for 1.0~1. 5H.
It is mainly used for manufacturing BaTiOa -PbTi03, pbzroa-pbti03 and other composite electronic ceramics to improve the electrical properties of the ceramics. It is also used as a pigment in coatings.
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
category | toxic substances |
toxicity classification | low toxicity |
acute toxicity | abdominal cavity-rat LD50: 2000 mg/kg |
flammability hazard characteristics | non-combustible; toxic lead and titanium compound smoke from the fire site |
storage and transportation characteristics | warehouse low temperature, ventilation, drying |
fire extinguishing agent | water, carbon dioxide, dry powder, sand |
occupational standard | TWA 0.05 mg (lead)/m3 |