# Is supercritical CO$_2$ a newtonian fluid?

Is supercritical CO$_2$ a newtonian fluid?

I can't seem to find any articles describing the stress-strain relationship for carbon-dioxide in a supercritical state (high temperature/pressure combination). I know it's newtonian in its gaseous state and I presume that being in a supercritical state would not alter its stress-strain relationship, but I can't find any references stating one way or the other. Any help would be greatly appreciated! :)

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