Pentamethylheptane as a primary reference standard for cetane number
US9068963B2 · kind B2 · utility
0Cited by
9References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 12, 2013 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Mar 12, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/2829
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A composition useful as a Reference Standard for measurement of Cetane Number or for use as a standard for determining a Derived Cetane Number consists essentially of a blend of n-hexadecane and 2,2,4,6,6-pentamethylheptane. The disclosed Reference Standards can be used directly as substitutes for blends of n-hexadecane and 2,2,4,4,6,8,8-heptamethylnonane in ASTM D613-10a for determining Cetane Number, or in ASTM D6890, ASTM D7170 or ASTM D7668 to determine a Derived Cetane Number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.