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The recrystallization technique discusses using a drying agent before recrystallizing out of an organic solvent, however, we

Melting Point, thin layer chromotography, and gas chromotography
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Answer #1

Melting Point:

Melting point will not be accurate and will give a wrong value (usually on a lower side). the product will start melting below its normal value due to external contamination.

Thin layer chromatography.

Multiple spots may be observed. At time it may streak.

Gas Chromatography:

Multiple peaks will be observed during analysis. IT will have an impact on its purity calculation  

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