salvia extracion method

ok I read on another msg board that you can make a 5x extract if u take 6 grams of powdered leaf and pour some acetone (no ammount listed on it)
stir for atleast 5 min then just pour off acetone from old leaf and pour it onto 1 gram dried leaf then just wait untill it is completly evaporaded
that will make you a gram of 5x

my questions are
1.Will it work
2.How can I get some acetone that will work(not combined with harmful chemicals that will be bad to have on the leaf
3.how much acetone should I use