TrusTec® PRF Octane Blend No. 98 is a primary reference fuel with 98% isooctane and 2% n-heptane used to decide octane rating.
TrusTec® PRF Octane Blend No. 98 primary reference fuel meets the requirements outlined in ASTM D-2699 and ASTM D-2700 for octane testing. The reference fuel is a blend of 98% isooctane and 2% n-heptane.
Specific gravity at 60/60 °F: 0.6950 – 0.6970
Composition, vol %:
Isooctane: 97.70 – 98.30
n-Heptane: 1.70 – 2.30
Refineries and laboratories require suitable methods to determine gasoline octane rating.
Oil refineries Gasoline octane analysis
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