Question? How much space does an once of this stuff take up (no thought about density yet. Yea Me!!)? j/k
Here's a thought: Has anyone ever seen how much area a shattered vial of blood can cover? Yea, I know it's about the same as water, but seeing blood has a greater impact...
It covers quite a large area, for being only a few onces.
Before I go on, I have a question? Does frozen in time mean unmoving?
Anyway, how about this: Put the stuff in a vial attached to a sting, then give it to the fighter. He swings it like a flail, but instead of doing damage, the effected portion is frozen (legs cease to move, the frozen rib cage cannot expand with the breathe, being hit in the face means no spells, etc).
It's a stretch, and requires of great deal of improvisation by the DM, but it could work...