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).
Comparative analysis report for two samples, 'A' and 'B', detailing their physical and chemical properties.

Identifier  ExFiles\Box 145\1\  scan0230
Date  10th September 1937 guessed
  
No.1.

Sample
Marked "A"

Sample
Marked "B"

Specific Gravity @ 60°F . . . . . . .904 . . . . . . .904
Pour Test . . . . . . . . . . . . . . 5°F . . . . . . . . 5°F
Open Flash Point . . . . . . . . . . .460°F . . . . . . .480°F
Redwood Viscosity @ 70°F . . . . . . 5990" . . . . . . .5797"
@ 100°F . . . . . . 1530" . . . . . . .1566"
@ 140°F . . . . . . 450" . . . . . . . 460"
@ 200°F . . . . . . 121" . . . . . . . 130"
Colour (Lovibond) . . . . . . . . . . Dark . . . . . . . 190
Compound . . . . . . . . . . . . . . .Nil . . . . . . . Nil
Neutralization Value KOH . . . . . . 0.280 . . . . . . .0.280
Water . . . . . . . . . . . . . . . . Nil . . . . . . . Nil
Emulsion . . . . . . . . . . . . . . .Nil . . . . . . . Nil
Total Sulphur . . . . . . . . . . . .0.44% . . . . . . .0.44%
" Chlorine . . . . . . . . . . . . .Nil . . . . . . . Nil
Other impurities . . . . . . . . . . Nil . . . . . . . Nil

Traces of score lines on pin and race.
No discolouration.
  
  


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