Barium titanate
Description
Barium titanate (CAS 12047-27-7), also known as barium metatitanate and abbreviated as BTO, is a piezoelectric ceramic material central to the electronics and advanced materials industries.
It converts mechanical stress into electrical signals and vice versa, making it the functional core of sensors, actuators, and capacitor components in various industrial sectors.
In electronics manufacturing, BTO is the primary dielectric material in multilayer ceramic capacitors (MLCCs), where its high permittivity enables compact, high-capacity components for circuits.
Piezoelectric transducers and ultrasonic sensors rely on BTO's electromechanical response for precision signal conversion in medical, industrial, and sonar equipment applications worldwide.
In plastics and polymer compounding, BTO is incorporated as a functional filler to impart dielectric and piezoelectric properties to flexible composite films used in smart packaging.
Emerging water treatment applications use BTO-based photocatalytic systems to drive pollutant degradation under UV or mechanical activation, showcasing the material's versatility in green tech.
Barium titanate is supplied as a fine ceramic powder, with particle size and crystalline phase specified to match end-use performance requirements for high-purity electronic and technical grades.
Purity levels typically range from 99% upward for electronic applications. Bulk and smaller research-quantity packaging are both available through industrial ceramic and specialty chemical channels.
Physical Properties
| Melting Point | 1618 °C (approx) |
| Density | 6.02 g/cm³ (solid) |
| Appearance | off-white powder |
| Color | White to gray |
| Form | powder |
| Water Solubility | INSOLUBLE |
| Vapor Pressure | 0Pa at 20℃ |
| pH | 9.6 (20g/l, H2O, 25℃)(slurry) |
| Log P | 1 at 20℃ |
Trade & Regulatory
| HS Code | 28419085 |
| UN Number | 1564 |
| ADR Class | 6.1 |
| Packing Group | III |
| WGK (Germany) | 1 |
Documentation
Other Names
Barium metatitanate|Nova Chem AB|Kyorix BT-S|BT 10 (titanate)|Kyorix BT-HD 9DX|Barium titanate (IV)|BT 05 (filler)|VK 4 (oxide)|BTO
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