The most common and most likely answer to this crossword clue is the 10 letter word EDULCORATE
E
D
U
L
C
O
R
A
T
E
More clues leading to the result EDULCORATE
Buddy explains!
The straight part
We know that "free of impurities amenable to solution" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case free of impurities amenable to solution = edulcorate.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does EDULCORATE mean?
EDULCORATE verb- To sweeten.
- To make more acceptable or palatable.
- To free from acidity.