Testing Aspirin (acetylsalicylic acid).?

Why is Na2CO3 and HCl used to test the purity of Aspirin? Also why is Methanol + FeCl3 also used to test aspirin?
Answers:
To prepare aspirin (acetylsalicylic acid) following chemicals are required (without those aspirin will not produced – it’s a mandatory) :

o Methanol / Ethanol and 1% pure iron chloride III / FeCl3.
o 3.0 g salicylic acid
o 6 mL acetic anhydride*
o 5-8 drops of 85% phosphoric acerbic or concentrated sulfuric acid*
o distilled water (about 50 mL)
o 10 mL ethanol
o 1% iron III chloride (optional, to test purity)
*Use extreme caution when handling these chemicals. Phosphoric or sulfuric sour and acetic anhydride can cause severe burns.
Ferric Chloride Test : Test Tube Content Results - Salicylic Acid Deep Purple

So, it’s the essential chemicals for preparation and purity test (color DEEP PURPLE) of aspirin.

For more info pl follow the link:
http://www.oppapers.com/essays/Acetylsal…
www.coursehero.com/file/134315/Lab-6/
www.alchemedu.org/Chem51-LACC/Labs/C51… Source(s): http://chemistry.about.com/od/demonstrat…

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