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.
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