Hello everyone, I've got some questions about CS.

Can water be too much pure? I've got this sterile ultra pure redestiled water 
(demineralised, then destiled). It is used in medicine for injections. 
Hopefully it won't dissolve my container because of its purity. What do you 
guys think?

And now about oral consumption of CS.. Is it okay if one holds CS in mouth for 
couple of minutes, and then doesn't swallow? As I understood, CS is absorbed 
through tongue and surrounding tissue in mouth. Am I losing much if I don't 
swallow?

Thank you,

Tomislav