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preface to fifteenth edition

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10 9.2 1.013 3.625.6<br />

15 13.8 1.019 5.622.0<br />

20 18.3 1.026 7.9 17.8<br />

25 23.0 1.033 10.7 12.8<br />

30 28.0 1.040 14.0 6.8<br />

40 37.8 1.053 22.3 8.2<br />

50 47.8 1.067 33.8 28.8<br />

60 58.1 1.079 49.3 56.7<br />

5.84 SECTION 5<br />

TABLE 5.13<br />

Compositions of Aqueous Antifreeze Solutions (Continued)<br />

Freezing point of Pres<strong>to</strong>ne-water mixtures†<br />

% Pres<strong>to</strong>ne Specific gravity Freezing point<br />

By weight By volume 15/15C. (59F.) C. F.<br />

Specific gravity<br />

15.6C. (60F.)<br />

Freezing point of ethyl alcohol-water mixtures<br />

% alcohol<br />

by volume<br />

C.<br />

Freezing point<br />

0.990 5 1.7 29<br />

0.984 10 3.3 26<br />

0.978 15 6.1 21<br />

0.972 20 8.3 17<br />

0.964 25 11.1 12<br />

0.955 30 14.4 6<br />

0.945 35 17.8 0<br />

0.933 40 18.3 1<br />

0.922 45 18.9 2<br />

0.910 50 20.0 4<br />

0.899 55 21.7 7<br />

0.887 60 23.3 10<br />

0.875 65 24.4 12<br />

0.864 70 26.7 16<br />

0.852 75 32.2 26<br />

0.840 80 41.7 43<br />

† Eveready Pres<strong>to</strong>ne marketed for antifreeze purposes, is 97% ethylene glycol containing fractional percentages of soluble<br />

and insoluble ingredients <strong>to</strong> prevent foaming, creepage and water corrosion in au<strong>to</strong>mobile cooling systems.<br />

F.

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