Colors of Elements in a Flame - Boric Acid
Boric Acid
A very pale green color is imparted to the flame by boron in boric acid. A few tinges of yellow-orange sodium color appear as a consequence of traces of sodium impurity in the boric acid solution. The intensity of the boron flame color can be increased by burning boron-containing samples in alcohol, but for consistency with the other tests, this was not done here.
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