denaturant
Noun
Meaning
any substance that serves as a denaturing agent
Source: WordNetHypernyms
Examples
A denaturant melt measures the free energy of unfolding as well as the protein's m value, or denaturant dependence.
Because of these toxic properties, methanol is frequently used as a denaturant additive for ethanol manufactured for industrial uses.
Other applications Methanol is a traditional denaturant for ethanol, the product being known as " denatured alcohol " or "methylated spirit".