Ammonium biborate tetrahydrate
Ammonium biborate tetrahydrate (CAS: 12228-87-4), with the linear formula (NH₄)₂B₄O₇ · 4H₂O and a molecular weight of 263.38 g/mol, is a hydrated salt of ammonium and biborate. This chemical is primarily utilised in various industrial and research applications, including as a component in flame retardants, as a flux in metallurgy, and in the synthesis of other boron compounds. Its properties also lend it to use in ceramic and glass manufacturing.
- IUPAC
- Ammonium tetraborate tetrahydrate
Flame Retardant Component
Ammonium biborate tetrahydrate can be incorporated into materials to enhance their fire resistance. Upon heating, it decomposes to release water and ammonia, which can help to cool and dilute flammable gases.
Flux in Metallurgy
In metallurgical processes, it acts as a flux, lowering the melting point of oxides and facilitating the removal of impurities during welding, brazing, and soldering operations.
Boron Compound Synthesis
This compound serves as a precursor for the synthesis of other boron-containing chemicals and materials. It is a convenient source of both ammonium and borate ions for various chemical reactions.
Ceramics and Glass Manufacturing
It finds application in the production of specialised ceramics and glasses, contributing to the desired physical and chemical properties of the final products.
| Molecular weight | 263.38 |
|---|---|
| Linear formula | (NH4)2B4O7 · 4H2O |
| Assay | 98.9-101.2% B2O3 basis |
| pH | ~8.8 (in solution, over a wide range of concentrations) |
Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
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 Ammonium biborate tetrahydrate used for?
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Ammonium biborate tetrahydrate is used in applications such as a component in flame retardants, as a flux in metallurgy, for the synthesis of other boron compounds, and in ceramics and glass manufacturing.
What are the CAS number and chemical formula for Ammonium biborate tetrahydrate?
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The CAS number is 12228-87-4, and the linear formula is (NH₄)₂B₄O₇ · 4H₂O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Ammonium biborate tetrahydrate with an assay of 98.9-101.2% B₂O₃ basis. We do not represent this product as USP, BP, or EP grade.
What are the main safety and handling considerations for Ammonium biborate tetrahydrate?
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This compound is a Warning irritant (H315-H319-H335). Handle with appropriate personal protective equipment, including a dust mask type N95 (US), eyeshields, and gloves. Ensure adequate ventilation and avoid breathing dust. In case of eye contact, rinse cautiously with water for several minutes, removing contact lenses if present and easy to do.
How is Ammonium biborate tetrahydrate packed, shipped, and exported?
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Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals. Products are carefully packed according to international shipping regulations to ensure safe transit. Contact us for specific details on export capabilities.
How can I request a quote or sample for Ammonium biborate tetrahydrate?
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To request a quote or sample, please use the 'Request a Quote' or 'Request a Sample' buttons on our product page, or contact our sales team directly with your inquiry, referencing CAS number 12228-87-4.
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