I think the question you are not asking but illuminates the answer you are looking for is:
Why use water?
Water two properties that make it good for cooling. Big specific heat capacity and convenient melting and boiling points.
The bad points are its conductive, it supports life and it has strong surface tension.
The non cosmetic additives address these biocides, corrosion, inhibitors, surfactant etc
So a new fluid needs to be non conductive have a specific heat capacity better then 4185.5 J/KgK, no surface tension, be liquid at room temp and stay liquid up to common die temps 80C or so and be cheaper too.
I think at the moment it's just not worth the development cost