Tankerman · Cargo Properties — API Gravity
A crude oil with an API gravity greater than 10 will:
- ASink in fresh water
- BHave no flash point
- CAlways solidify
- DFloat on fresh water (it is lighter than water)✓ Correct
Explanation
API gravity 10 corresponds to the specific gravity of water (1.0). Oils above 10 °API are lighter than water and float; the higher the API number, the lighter the oil. API is read at 60°F and used in quantity/quality calculations.
Authority: ASTM; petroleum measurement
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