Gman082, if you recover the liquid without the 'gas-mixture' above the liquid through a burnout filter - in case you suspect acid in it - then you will have pure R22. Sometimes more pure then the R22 in new bottles because they don't clean each bottle when it's coming back in the refilling stations.
We've done it so many times with 100% good results that nobody can convince me from the opposite.
Then, what's better for the environment, me reclaiming it or your giving it back to destroy?