Sodium pyrosulfate
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Through Chemical formula, Analytical chemistry and Melting
Preparation
Sodium pyrosulfate is obtained by heating sodium bisulfate to 280 °C (536 °F)
- 2 NaHSO4 → Na2S2O7 + H2O
Temperatures above 460 °C further decompose the compound, producing sodium sulfate and sulfur trioxide:
- Na2S2O7 → Na2SO4 + SO3
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Applications
Sodium pyrosulfate was used in analytical chemistry. Samples are fused with sodium pyrosulfate to ensure complete dissolution before a quantitative analysis.