Propionic

"Pro`pi*on"ic\, a. [Proto- + Gr. pi`wn fat.] (Chem.) Pertaining to, derived from, or designating, an organic acid which is produced in the distillation of wood, in the fermentation of various organic substances, as glycerin, calcium lactate, etc., and is obtained as a colorless liquid having a sharp, pungent odor. Propionic acid is so called because it is the first or lowest member of the fatty acid series whose salts have a fatty feel."

Nothing to worry about to my understanding. If you still have concerns raw sugar could be used instead, but I would use the molasses with no worries...

Blutranes

Shouldn't be in concentrations high enuf to concern you regarding killing any critters in your pile. You need a lot more than that to kill bugs.

Dan

Actually closely related to vinegar (acetic acid) with one extra carbon atom. Quite harmless in this context I would think.

Thanks so very much, all three responses are very helpful
GOD BLESS and Good Luck Bill