
High-purity Boron Phosphate (BPO4, CAS 13308-51-5), min. 99%, supplied wholesale by Zyntex. Refractory solid acid catalyst and additive for special glasses, ceramics and intumescent flame-retardant systems. CoA and SDS.
Boron phosphate (BPO4) is a white, fine crystalline powder that is insoluble in water and dilute acids, although strong alkalis dissolve it. It is thermally very stable and sublimes above about 1,400°C. Its structure resembles quartz, with boron and phosphorus in tetrahedral positions.
Chemists use it as a solid acid catalyst, for example in dehydration, hydration and alkylation reactions, because its acidic surface remains active at high temperatures. Glass and ceramic producers add it to special glasses, glazes and dental ceramics, while polymer producers use it in some flame-retardant and intumescent systems.
Furthermore, related boron and phosphorus raw materials in our range include Boric Acid, Phosphoric acid and Boron nitride.
Typical uses include, for example:
⚗️ Solid Acid Catalysts
Catalyst for dehydration as well as alkylation.
🏺 Glass and Ceramics
Component of special glasses as well as glazes.
🔥 Flame Retardants
Additive in intumescent systems.
🔬 Research
Material for catalysis studies.
| Parameter | Standard Value |
|---|---|
| Product Name | Boron Phosphate |
| CAS Number | 13308-51-5 |
| Molecular Formula / Weight | BPO4 / 105.78 g/mol |
| Assay / Purity | Min 99.0% |
| Appearance | White fine crystalline powder |
| Melting Point | Above 1400 °C (Sublimes) |
| Documents | CoA as well as SDS with every lot |
⚠️ Safety & Handling: May cause eye and respiratory irritation; boron compounds may also count as toxic for reproduction. Avoid dust formation and also wear dust protection and eye protection. Store in tightly closed containers in a dry place, so that the material stays in good condition. Always consult the Safety Data Sheet (SDS), because it contains the full classification and handling instructions.
Why does boron phosphate work as a catalyst?
Because its surface carries acidic sites that stay active at high temperatures, it catalyzes reactions such as alcohol dehydration.
Is boron phosphate soluble in water?
No. It is insoluble in water and dilute acids, while strong alkalis dissolve it.
How can I get a price and documents?
Prices depend on quantity, packaging and destination, so please contact us with your required volume. We then send a quotation together with the CoA and SDS.