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 report detailing the distillation and analysis of a petrol sample.
| Identifier | ExFiles\Box 32\1\ Scan074 | |
| Date | 11th May 1923 | |
| Hs{Lord Ernest Hives - Chair} H14/EA12523 X1555 Laboratory Re Sample of Petrol sent in by you 11.5.23 Distillation Specific Gravity .804 Boils at 91°C First Distillate over at 73°C Temperature °C % Distillate Temperature °C % Distillate 100 --- 20.75 190 --- 74.25 110 --- 36.0 200 --- 75.0 120 --- 47.5 210 --- 76.0 130 --- 56.25 220 --- 76.75 140 --- 62.25 230 --- 77.5 150 --- 66.75 240 --- 79.0 160 --- 70.0 250 --- 80.75 170 --- 72.0 260 --- 83.0 180 --- 73.5 Analysis Olefins and Di-olefins ----- 18.8 % Aromatic Hydro-carbons ----- 72.0 % Paraffins and cyclo-paraffins 9.2 % This apparently contains a considerable amount of Toluene and Xylene. Hl. Hre | ||