What is the Vapor pressure of ethylene oxide at 46° C?

Official USCG Answer & Rule Citation

Correct Answer: Option D — 48.0 (psia)

According to hazardous materials physical property data tables in 46 CFR Part 151, the vapor pressure of ethylene oxide at an elevated temperature of 46°C corresponds precisely to 48.0 psia, dictating specialized containment and pressure relief requirements.