Showing posts with label High Degrees of Unsaturation. Show all posts
Showing posts with label High Degrees of Unsaturation. Show all posts

Tuesday, April 10, 2012

Ignition Test for High Degrees of Unsaturation

Standards
Benzophenone, cyclohexane, and hexanes.

Procedure
Heat a small sample on a spatula. First, hold the sample near the side of a bunsen burner to see if it melts normally and then burns. Heat it in the flame. Aromatic compounds often burn with a smoky flame.

Positive Test
A sooty yellow flame is an indication of an aromatic ring or other centers of unsaturation

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