for today i have almost finished.
I had some problem with FID today so i lost some time, on monday i will try to apply yours suggestion.
By the way the solubility i reached in some attempt is almost double (1g/10cc).

May I comunicate with you by e_mail?
Because i don't want to have any problem with divulgation of information covered by industrial secret, even if i think that it's not the case.
This is mine
cavallo_cs@libero.it

Thank you again and hope to let you know soon good news