Barium ferrite
Barium ferrite (CAS 12047-11-9), with the linear formula BaFe₁₂O₁₉ and a molecular weight of 1111.46 g/mol, is a magnetic ceramic material. It is a key component in permanent magnets and magnetic recording media due to its excellent magnetic properties and chemical stability. This black powder is widely utilised in the electronics and materials science industries for applications requiring strong magnetic fields and durability.
- IUPAC
- Barium dodecairon nonadecaoxide,Barium iron oxide
- Synonyms
- Barium dodecairon nonadecaoxideBarium iron oxide

Permanent Magnets
Barium ferrite is a principal material for producing strong, permanent magnets. These magnets are essential components in various electronic devices, including loudspeakers, small electric motors, and magnetic separators.
Magnetic Recording Media
Its magnetic properties make it suitable for use in magnetic storage media. Historically, it has been employed in magnetic stripe cards and older forms of magnetic tape for data storage.
Microwave Absorbers
The material exhibits microwave absorption characteristics, finding applications in stealth technology and electromagnetic interference (EMI) shielding to reduce radar detection and unwanted electronic noise.
Ceramic Applications
As a barium and iron oxide ceramic, it is used in specialized ceramic formulations where its magnetic properties are advantageous, contributing to advanced materials science research and development.
| Molecular weight | 1111.46 |
|---|---|
| Linear formula | BaFe12O19 |
| Assay | >97% trace metals basis |
| Form | powder |
| Particle size | <100 nm (BET) |

Hazard statements
- H302Harmful if swallowed
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 20/22 |
| Safety statements (S) | 26 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Barium ferrite used for?
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Barium ferrite (CAS 12047-11-9) is primarily used in the production of permanent magnets, magnetic recording media, microwave absorbers, and specialized ceramic applications due to its strong magnetic properties and stability.
What are the CAS number and formula for Barium ferrite?
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The CAS number for Barium ferrite is 12047-11-9, and its linear formula is BaFe₁₂O₁₉.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Barium ferrite with an assay of >97% on a trace metals basis. This is typically considered a technical or research grade. TSS does not represent this product as USP, BP, or EP grade.
How should Barium ferrite be handled safely?
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Barium ferrite is classified as harmful if swallowed or inhaled (H302 + H332). When handling, it is recommended to use a dust mask type N95 (US), wear eyeshields, and use gloves. Ensure adequate ventilation.
Is Barium ferrite a controlled substance?
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Based on the provided data, Barium ferrite is not indicated as a controlled substance. However, users should always comply with local regulations regarding its use and handling.
How is Barium ferrite typically packed and shipped?
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Barium ferrite is supplied as a powder. Packaging details will be confirmed upon order, and TSS exports globally, adhering to all relevant shipping regulations for chemical compounds.
How can I request a quote or sample for Barium ferrite?
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To request a quote or a sample of Barium ferrite, please contact the Tech Serve Solutions sales team through our website or by phone. Provide your specific requirements for prompt assistance.
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