ICLR Nitrous Github: https://github.com/icl-rocketry/NitrousModelling
Engineering Toolbox for the dynamic viscosity of IPA: https://www.engineeringtoolbox.com/ethanol-dynamic-kinematic-viscosity-temperature-pressure-d_2071.html
NIST Chemistry Webbook for nitrous (just use NIST in general): https://webbook.nist.gov/cgi/cbook.cgi?ID=10024-97-2