substance added

[covenant]

substance added to a liquid to make it less volatile

[MarkRae]

Definitely a good idea, especially if the liquid is going to be transported...

[emeritus]

Fixative

[jomifl]

do you mean by raising the boiling point or something else?

[wildwood]

diluent?

[factor-fiction]

After only forty odd posts this user is still finding his/her feet on AB. Althought the poster frequently posts questions in the wrong section, rarely gives details of letters, and rarely acknowledges answers, there are some promising signs- at least he/she now fills in the question details box unlike on some earlier posts http://www.theanswerb...s/Question916555.html