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Barium titanate

Barium titanate
Barium titanate structure
CAS No.
12047-27-7
Chemical Name:
Barium titanate
Synonyms
vk4;hbt3;bt303;bt204;bt201;hpbt1;yv100an;kyorixbt-s;vk4(oxide);BARIUM TITANATE
CBNumber:
CB0265773
Molecular Formula:
BaO3Ti
Formula Weight:
233.19
MOL File:
12047-27-7.mol

Barium titanate Properties

Melting point:
1625 °C
Density 
6.08 g/mL at 25 °C(lit.)
storage temp. 
Storage temperature: no restrictions.
solubility 
Soluble in alcohols
form 
powder
color 
White to gray
Specific Gravity
6.08
PH
9.6 (20g/l, H2O, 25℃)(slurry)
Water Solubility 
INSOLUBLE
Merck 
14,1000
InChIKey
WNKMTAQXMLAYHX-UHFFFAOYSA-N
CAS DataBase Reference
12047-27-7(CAS DataBase Reference)
FDA UNII
73LKE302QO
EPA Substance Registry System
Barium titanium oxide (BaTiO3) (12047-27-7)
SAFETY
  • Risk and Safety Statements
Symbol(GHS) 
GHS07,GHS02
Signal word  Warning
Hazard statements  H226-H302+H332-H302-H332
Precautionary statements  P210-P261-P280a-P303+P361+P353-P304+P340-P501a-P264-P270-P301+P312a
Hazard Codes  Xn
Risk Statements  20/22
Safety Statements  28-28A
RIDADR  UN 1564 6.1/PG 3
WGK Germany  1
RTECS  XR1437333
TSCA  Yes
HazardClass  3
PackingGroup  III
HS Code  28419085

Barium titanate price More Price(32)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 208108 Barium titanate(IV) powder, <3 μm, 99% 12047-27-7 2kg $160 2019-12-02 Buy
Sigma-Aldrich 208108 Barium titanate(IV) powder, <3 μm, 99% 12047-27-7 500g $263 2019-12-02 Buy
Alfa Aesar 010652 Barium titanium oxide, Puratronic?, 99.99% (metals basis) 12047-27-7 25g $165 2020-06-24 Buy
Alfa Aesar 010652 Barium titanium oxide, Puratronic?, 99.99% (metals basis) 12047-27-7 5g $72.1 2020-06-24 Buy
Strem Chemicals 93-5639 Barium titanate, sintered lump (99.9%-Ba) 12047-27-7 25g $103 2020-06-24 Buy

Barium titanate Chemical Properties,Uses,Production

Description

Attributing to its ferroelectricity, barium titanate is applied as a semiconductor with positive temperature coefficient of resistivity. It is one of the most important electroceramic materials among all the ferroelectric materials. Barium titanate has also dielectric properties, which can be used in the manufacture of ceramic capacitors. Furthermore, barium titanate has piezoelectric property and can be used in electrical devices such as actuators, accelerators, ultrasonic generators, piezoelectric transducers, filters, and sensors.

Chemical Properties

White crystalline solid; exists in five crystal modifications; the common tetragonal form has a Curie point of 120°C; exhibits ferroelectric and piezoelectric properties; density 6.02 g/cm3; melts at 1,625°C; insoluble in water and alkalies; slightly soluble in dilute mineral acids; dissolves in concentrated sulfuric acid and hydrofluoric acid.

Physical properties

White crystalline solid; exists in five crystal modifications; the common 94 BARIUM TITANATE tetragonal form has a Curie point of 120°C; exhibits ferroelectric and piezoelectric properties; density 6.02 g/cm3; melts at 1,625°C; insoluble in water and alkalies; slightly soluble in dilute mineral acids; dissolves in concentrated sulfuric acid and hydrofluoric acid.

Uses

Barium titanate has many important commercial applications. It has both ferroelectric and piezoelectric properties. Also, it has a very high dielectric constant (about 1,000 times that of water). The compound has five crystalline modifications, each of which is stable over a particular temperature range. Ceramic bodies of barium titanate find wide applications in dielectric amplifiers, magnetic amplifiers, and capacitors. These storage devices are used in digital calculators, radio and television sets, ultrasonic apparatus, crystal microphone and telephone, sonar equipment, and many other electronic devices.

Uses

In electronic devices, e.g., as voltage-sensitive dielectric in so-called dielectric amplifiers, in computer elements, magnetic amplifiers, memory devices.

Uses

Barium titanate (BaTiO3, BT) is one of the widely used materials in electronic ceramics. Because of its very high permittivity, it could be used in capacitors with outstanding properties by doping. Because barium titanate is used in large quantities as a material in electronic devices, considerable energy savings could be achieved if barium titanate could be sintered at a reduced temperature. It is reported that for LTCC (Low Temperature Cc-fired Ceramics) application, barium titanate is sintering at 1000℃ for 24 hours with the incorporation of silicate glass system. In addition, there is a report saying that a sintered body of relative density around 90% was achieved by 900℃ for 8 hours by adding boron oxide or lead borate to a barium titanate.

Preparation

Barium titanate is made by sintering a finely powdered mixture of barium carbonate and titanium dioxide in a furnace at 1,350°C. The calcined mass is finely ground and mixed with a binder (plastic). The mixture is subjected to extrusion, pressing or film casting to obtain ceramic bodies of desired shapes. Plastic is burnt off by heating and the shaped body is sintered by firing and then polished.
Barium titanate also may be prepared by other methods. These include ignition of barium and titanium alcoholates in an organic solvent; treatment of tetraethyl titanate or other alkyl ester of titanium with an aqueous solution of barium hydroxide; and ignition of barium titanyloxalate.

References

[1] Burcu Ertu?, The Overview of The Electrical Properties of Barium Titanate, American Journal of Engineering Research, 2013, vol. 02, 01-07
[2] G. Arlt, D. Hennings and G. de With, Dielectric properties of fine‐grained barium titanate ceramics, Journal of Applied Physics, 1985, vol. 58, 1619
[3] Tomoaki Karaki, Kang Yan and Masatoshi Adachi, Barium Titanate Piezoelectric Ceramics Manufactured by Two-Step Sintering, Japanese Journal of Applied Physics, 2007, vol. 46, 7035-7038

Barium titanate Preparation Products And Raw materials

Raw materials

Preparation Products


Barium titanate Suppliers

Global( 182)Suppliers
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Haihang Industry Co.,Ltd
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View Lastest Price from Barium titanate manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2020-05-27 Barium titanate
12047-27-7
US $0.01-1.00 / KG 1KG 99% 20 tons Shaanxi Dideu Medichem Co. Ltd
2020-01-16 Barium titanate
12047-27-7
US $1.00 / KG 1KG 85.0-99.8% 200kgs Career Henan Chemical Co
2019-12-24 Barium titanate
12047-27-7
US $1.00 / KG 1IU 99% 100kg Career Henan Chemical Co

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