Origin of preservative
Examples from the Web for preservative
Thimerosal was dropped as a preservative in MMR vaccines in 1999, but since then autism rates have skyrocketed.
English wizards—Scotch witches.Social eminence is no preservative from social delusion.History of the Intellectual Development of Europe, Volume II (of 2)|John William Draper
At all events, let your preservative stand while you filter your emulsion.
In addition to acting as a preservative, it would considerably enhance the value of the resulting guano as a manure.Manures and the principles of manuring|Charles Morton Aikman