All for Joomla All for Webmasters

Purifying OTC Chemicals: Recrystallization

By March 9, 2017Uncategorized

 The second installment of my series on methods to purify OTC (over the counter, i.e. easily bought at local stores) reagents. Recrystallization is a technique used …

 The second installment of my series on methods to purify OTC (over the counter, i.e. easily bought at local stores) reagents.

Recrystallization is a technique used to purify solid reagents. The idea is very simple: just dissolve your chemical in a solvent (usually water), and let the solution evaporate slowly over a long period of time. The compound with the highest concentration in solution (or least solubility, whatever the case may be) will crystallize out first, leaving the impurities concentrated in the liquid. The solution is left to evaporate most of the way, then the remaining liquid is poured off and discarded

I didn’t show it in the video, but be sure to rinse your crystalline product with ice cold solvent to rinse off any remaining liquid. This ensures removal of any adhering liquid containing impurities, and the cold solvent won’t dissolve any of your product crystals.

This process can be repeated as many times as you want, redissolving your solid product and crystallizing again. Each time this results in a purer and purer product.

Ahmed
data
marketing
marketing software
E-Marketing tools

beclicka

كورس تسويق

Leave a Reply