1 kg Barium Metaphosphate Ba(PO3)2 Powder 99.999% 5N
Barium Metaphosphate, Ba(PO3)2, 5N Powder, 99.999% (Metal Basis) High Purity Powder
- CAS Number: 13762-83-9
- Product Number: HPC-561501-5N
- Product Purity: 5N, 99.999% (metal basis), Fe < 1 ppm, other transition metals < 0.5 ppm
- Chemical Properties
- Formula: Ba(PO3)2
- Formula Weight: 295.27
- Form: Powder
- Melting point: 1560 °C
- Solubility: insoluble in water, slightly soluble in aqueous acid
- Barium metaphosphate powder is an inorganic powder with the molecular formula Ba(PO3)2. It is a colourless solid that is insoluble in water. A number of hydrated forms are known which are actually cyclic metaphosphates, Ba2(P4O12)·3.5H2O, Ba3(P3O9)2·6H2O.
The combination of sodium and barium polyphosphate forms a low-melting glass with a high coefficient of thermal expansion. The melting point of the glass increases with barium content. This glass makes seals with low melting metals like aluminium (melting point 650 °C). Normal borosilicate glasses soften above the melting point of aluminium. This mixture is prepared by heating a mixture of diammonium phosphate, sodium carbonate, and barium carbonate.
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