Dynamic Viscosity of Vapour in Convection Formulas

Yes, the Dynamic Viscosity of Vapour, measured in Dynamic Viscosity can be negative.

Dynamic Viscosity of Vapour is usually measured using the Pascal Second[Pa*s] for Dynamic Viscosity. Newton Second per Square Meter[Pa*s], Millinewton Second per Square Meter[Pa*s], Dyne Second per Square Centimeter[Pa*s] are the few other units in which Dynamic Viscosity of Vapour can be measured.