Absorbent A-8 is a mixture of hydrocarbons produced in the isoprene production process by the two-stage dehydrogenation of isopentane. It consists of aliphatic with aromatic hydrocarbons. It is used as a raw material for refineries. It is a mixture of hexane fraction and isopentane fraction. According to the test report the density is 0.648 g/cm3 at 15 oC, the octane number is 76.8, the octane number is 72.9. The product was tested as Gasoline Stable. Produced as a cheaper alternative to the hexane fraction. Used as a base for motor gasoline. It is shipped from the refinery in rail and road tankers.
| PARAMETER NAME | STANDARD |
|---|
| Visual appearance | Transparent liquid in yellow to dark green colour range |
| Density at 15°C, g/cm³ | 0.630–0.950 |
| Fractional composition: |
| – Initial boiling point, °C, not lower than | 25 |
| – Boiling point, °C max | 380 |
| – Amount of fraction which will boil out on heating to 185°C, % vol, min | 65 |
| Actual tar content, mg/100 cm³, not more than | 15000 |
| Tests on copper plate | Passes |
| Water content, %, max | 0.2 |
| Free water content | No |
