Strontium metaphosphate Sr(PO3)2 optical grade 99.99%

 24,90 169,00 incl. VAT

100g – 250g – 500g- 1000g

SKU: 04864-1-1 Category:


Strontium metaphosphate Sr(PO3)2 – optical grade 99.99%

The combination of sodium and strontium polyphosphate forms a low-melting glass with a high coefficient of thermal expansion. The melting point of the glass increases with Strontium 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 Strontium carbonate.

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100g, 250g, 500g, 1000g


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