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 analysis of a re-sampled petrol submission.

Identifier  ExFiles\Box 20\6\  Scan044
Date  28th February 1921
  
R.R. 238a (100 T) (S.H 159 11-8-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2800
X. 985
Hs.{Lord Ernest Hives - Chair}
Hll/EBl.3.21.
Laboratory.

[Stamp: RECEIVED 1 MAR 1921 HS{Lord Ernest Hives - Chair}]

Re sample of Petrol submitted 28.2.21.

Specific Gravity .755
Boils slightly at 90 C.
" vigorously at 104 C.
First distillate over at 95 C.
1.5% distilled over at 100 C.
10% " " " 105 C.
12% " " " 110 C.
23% " " " 115 C.
30% " " " 120 C.
38% " " " 125 C.
45% " " " 130 C.
56% " " " 135 C.
62.5% " " " 140 C.
68% " " " 145 C.
74% " " " 150 C.
77.5% " " " 155 C.
81% " " " 160 C.

[Handwritten notes next to table:]
2/2
33%
75%

[Handwritten notes right side:]
310°F — 84%
320°F — 85.5%
H1. 338°F — 87.5%
IHC 347°F — 89.0%
356°F — 91.0%
365°F — 92.0%
374°F — 93.0%

[Handwritten note below table:]
Includes 15% paraffin.

[Handwritten calculations at bottom:]
5 ) 135 ( 27
10
35
34.3
32
275
  
  


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