Distillation Curve Analyzer
Analyze ASTM D86 distillation data and calculate volatility indices
Distillation Data Input
Enter ASTM D86 distillation temperatures (F)
Analysis Results
Enter distillation data and click Analyze
Distillation Indices Reference
Driveability Index (DI)
DI = 1.5 x T10 + 3.0 x T50 + T90 + 1.33 x (Vol% Ethanol)
For summer gasoline: DI max = 1250
For winter gasoline: DI max = 1200
Lower DI = Better cold driveability
ASTM D86 Distillation Specifications
| Property | Gasoline | Diesel | Jet A |
|---|---|---|---|
| IBP (F) | 85-120 | 340-380 | 320-360 |
| T10 (F) | 122-158 | 400-440 | 380-410 |
| T50 (F) | 170-250 | 480-530 | 420-460 |
| T90 (F) | 320-374 | 570-640 | 500-540 |
| FBP (F) | ≤437 | ≤700 | ≤572 |
Volume Average Boiling Point (VABP)
VABP = (T10 + T30 + T50 + T70 + T90) / 5
Used for:
- Characterization factor calculations
- Heat capacity estimates
- Vapor pressure correlations