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What is my thang?

Karnage
in Organic Chemistry

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I have an unknown that gives a positive 2,4-DNP test, a positive Tollens test, however, the chromic acid test is negative. What could possibly yield those results. I ran the tests 3 times and got the same result. Maybe contamination?

 

Im suspecting maybe I did the chromic acid test wrong or something, because the other 2 tests point towards an aldehyde.

The chromic acid test is for alcohols isnt it?

 

Why dont you just do the 2,4,D again, and look up its melting point of the hydrozone in a data book. Thats what Ive been taught anyway...

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