bariumferrate
BARIUM FERRITE NANOPOWDER
CAS: 12047-11-9
Molecular Formula: BaFeH4O
bariumferrate - Names and Identifiers
bariumferrate - Physico-chemical Properties
| Molecular Formula | BaFeH4O |
| Molar Mass | 213.2 |
| Density | 4.9191 |
| Melting Point | >1315℃ |
| Water Solubility | Insoluble in water. |
| Appearance | Shape nanopowder, color Black |
| Color | Black |
| Odor | no odor |
| Exposure Limit | ACGIH: TWA 0.5 mg/m3NIOSH: IDLH 50 mg/m3; TWA 0.5 mg/m3 |
| Use | Introduction Nano-barium ferrite (BaFe12O19) is widely used in all aspects of the national economy due to its excellent magnetic properties (high uniaxial anisotropy, high Curie temperature (723K), large saturation magnetization (theoretical value 71. 6 Am2/kg) and high coercivity (theoretical value 67000e), etc.) and corrosion resistance, oxidation resistance and wear resistance. |
bariumferrate - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R20/22 - Harmful by inhalation and if swallowed. R48/20 - |
| Safety Description | 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. |
| UN IDs | UN 1564 6.1/PG 3 |
| WGK Germany | 3 |
| Hazard Class | 6.1 |
bariumferrate - Nature
| Odor | no odor |
Last Update：2024-04-10 22:29:15
bariumferrate - Uses and synthesis methods
application
As an excellent quasi-one-dimensional structural material, nano-barium ferrite can be widely used in the synthesis of functional materials, catalyst carriers, the synthesis of nano-electronic devices, and the development of field emission electronic devices.
Preparation method
A method for preparing a nano-barium ferrite magnetic material, characterized in that the preparation method includes the following steps:
(1) Mix a certain amount of barium nitrate (Ba(NO3)2) and ferric nitrate (Fe(NO3) 3.9 & Eta;20) Mix, add a certain amount of citric acid (C6H8O7 · & Eta;20) aqueous solution, stir, keep the temperature at 55-65°C, until the mixed solid is completely dissolved, to obtain a citric acid solution containing barium and iron; Control the molar ratio at Ba: Fe: citric acid = 1 : 11.5 : 15;
(2) Add a certain amount of carbon nanotubes activated and purified by concentrated nitric acid 6~12M into (1) the resulting solution, control the molar ratio of C to dog between 0~2.5, and fully stir to obtain a uniform carbon nanotubes/citric acid sol solution;
(3) Adjust the pH value of the sol with ammonia water, and let the solution stand at 60-90°C after full stirring to obtain a viscous sol;
(4) The above sol was formed into a xerogel at 80 to 250 ° C., and calcined in air at a temperature of 850 to 1200 ° C. for 1 to 3h to obtain a nano-barium ferrite magnetic material.
category
Toxic substances
Toxicity classification
Poisoning
flammability hazard characteristics
Thermal decomposition of toxic barium oxide smoke
storage and transportation features
Ventilated low temperature drying
Fire extinguishing agent
Dry powder, foam, sand, carbon dioxide, mist water
occupational standards
STEL 4 mg/m3
Last Update：2024-04-10 22:29:15
bariumferrate - Reference Information
| introduction | nano barium ferrite (BaFe12O19) is widely used in all aspects of the national economy due to its excellent magnetic properties (high uniaxial anisotropy, high Curie temperature (723K), large saturation magnetization (theoretical value 71.6 Am2/kg) and high coercivity (theoretical value 67000e), etc.) and corrosion resistance, oxidation resistance and wear resistance. |
| application | nano-barium ferrite as an excellent quasi-one-dimensional structural material can be widely used in the synthesis of functional materials, catalyst carriers, synthesis of nano-electronic devices and the development of field emission electronic devices. |
| preparation method | a preparation method of nano-barium ferrite magnetic material, characterized in that the preparation method comprises the following steps:(1) mixing a certain amount of barium nitrate (Ba(NO3)2) and ferric nitrate (Fe(NO3)3 · 9 H20), adding a certain amount of citric acid (C6H8O7 · H20) aqueous solution, stir and keep the temperature at 55-65°C until the mixed solid is completely dissolved to obtain citric acid solution containing barium and iron. Control the molar ratio at Ba: Fe: citric acid = 1 : 11.5 : 15;(2) Add a certain amount of carbon nanotubes activated and purified by concentrated nitric acid 6~12M into the solution obtained by (1), and control the molar ratio between C and dog to be between 0~2. 5, fully stirring to obtain a uniform carbon nanotube/citric acid sol solution;(3) Adjust the pH value of the sol with ammonia water, and let the solution stand at 60-90°C after full stirring to obtain a viscous sol;(4) The above sol is formed at 80-250°C to form a xerogel, and nanometer barium ferrite magnetic material was obtained by calcining in air at 850~1200°C for 1~3h. |
| category | toxic substances |
| toxicity classification | poisoning |
| flammability hazard characteristics | thermal decomposition of toxic barium oxide smoke |
| storage and transportation characteristics | ventilation and low temperature drying |
| fire extinguishing agent | dry powder, foam, sand, carbon dioxide, mist water |
| occupational standard | STEL 4 mg/m3 |
Last Update：2024-04-09 21:11:58
