What is the Vapor pressure of ethylene oxide at 46° C?
Official USCG Answer & Rule Citation
Correct Answer: Option B — 48.0 (psia)
Ethylene oxide exhibits high volatility, and per the USCG Chemical Data Guide, its vapor pressure reaches 48.0 psia at 46° C. Deck officers must monitor pressure-temperature relationships closely to prevent overpressurization of cargo containment systems during carriage.
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