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Purification and purity determination of sodium dodecyl sulfate(cas 151-21-3)

The sodium dodecyl sulfate was purified by differential scanning calorimetry in aqueous solution after ether treatment. The mass fraction of sodium dodecyl sulfate(cas 151-21-3) was 88.6% and 99.3%, respectively, before and after purification. The extrapolated initiation temperature of sodium dodecyl sulfate after purification was 190 ℃, and the critical micelle concentration at 40 ℃ was 8.50 × 10-3mol·L-1.



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