Rolls-Royce Archives
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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
  
  


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