Phase subscript for supercritical reagent? When writing a chemical reaction, one can use subscripts to denote the phase of a reagent, e.g. $\ce{SiO2 (s)}$, $\ce{H2O (l)}$, $\ce{F2 (g)}$ or $\ce{Na^+ (aq)}$. However, I need to write a reaction involving a reagent that is above its critical point. What is the subscript for a supercritical reagent?
The accepted if not standardised notation is Sc or sc - I've seen both.  Capital "S" followed by a lower case "c", e. g.  ScCO2 is the one I've seen most often in chemistry related papers.
EDIT - apologies, this is a prefix and not a subscript. Hopefully you get the point