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- Chevron Phillips Chemical Reference Fuels
- PRF Octane Blends
- PRF Octane Blend No. 90
Specific Gravity at 60/60 °F : 0.6960 – 0.6970
Composition, vol %
Isooctane : 89.70 – 90.30
n -Heptane : 9.70 – 10.30