From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Laboratory analysis report of a petrol sample detailing distillation results and chemical composition.
| Identifier | ExFiles\Box 20\6\ Scan078 | |
| Date | 20th May 1925 | |
| X.985 H13/EA20.5.25. Laboratory. c to Hs.{Lord Ernest Hives - Chair} Re Sample of Petrol Submitted for analysis by the Expt.Dept. today. Specific Gravity 0.790 Distillation:- Initial Boiling Point -------- 39°C Final Boiling Point --------- 216°C Total Distillate ------------ 97.5% Residue --------------------- 1.0% Loss ------------------------ 1.5% Temperature °C % Distillate. 75 4.0 85 17.0 95 39.5 105 55.5 115 66.5 125 72.0 135 76.5 145 80.5 155 85.0 165 88.0 175 90.5 185 93.5 195 95.0 205 96.0 215 97.0 Analysis. Olefines & Di-olefines ------ 22.4 % Aromatic Hydrocarbons ------ 46.8 % Paraffins & Cycloparaffins -- 30.8 % The boiling range is very extended and there is a large proportion of high boiling point constituents. Benzene is the chief aromatic constituent, Toluene and Xylene being practically absent. The Olefines and Di-olefines are exceptionally high at the expense of the paraffins. The specific gravity is also exceptionally high. Hl. HE | ||