Extrema of the spinodal in a temperature vs composition plot coincide with those of the binodal curve, and are known as critical points. The spinodal itself can be thought of as a line of pseudocritical points, with the correlation function taking a scaling form with non-classical critical exponents. Strictly speaking, a spinodal is defined as a mean field theoretic object. As such, the spinodal does not exist in real systems, but one can extrapolate to infer the existence of a pseudospinodal that exhibits critical-like behavior such as critical slowing down.