PHYSICAL PROPERTIES

5.83

TABLE 5.13

Compositions of Aqueous Antifreeze Solutions

Freezing point of ethyl alcohol-water mixtures*

Freezing point

Specific gravity

% alcohol

% alcohol

20 /4 C. (68

F.)

by weight

by volume

C.

F.

0.99363

2.5

3.13

1.0

30.2

0.98971

4.8

6.00

2.0

28.4

0.98658

6.8

8.47

3.0

26.6

0.98006

11.3

14.0

5.0

23.0

0.97670

13.8

17.0

6.1

21.0

0.97336

16.4

20.2

7.5

18.5

0.97194

17.5

21.5

8.7

16.3

0.97024

18.8

23.1

9.4

15.1

0.96823

20.3

24.8

10.6

12.9

0.96578

22.1

27.0

12.2

10.0

0.96283

24.2

29.5

14.0

6.8

0.95914

26.7

32.4

16.0

3.2

0.95400

29.9

36.1

18.9

2.0

0.94715

33.8

40.5

23.6

10.5

0.93720

39.0

46.3

28.7

19.7

0.92193

46.3

53.8

33.9

29.0

0.90008

56.1

63.6

41.0

41.8

0.86311

71.9

78.2

51.3

60.3

Freezing point of methyl (wood) alcohol-water mixtures*

Freezing point

Specific gravity

% alcohol

% alcohol

C.

F.

15.6 C. (60

F.)

by weight

by volume

0.993

3.9

5

2.2

28

0.986

8.1

10

5.0

23

0.980

12.2

15

8.3

17

0.974

16.4

20

11.7

11

0.968

20.6

25

15.6

4

0.963

24.9

30

20.0

4

0.956

29.2

35

25.0

13

0.949

33.6

40

30.0

22

0.942

38.0

45

35.6

32

5.84

SECTION 5

TABLE 5.13

Compositions of Aqueous Antifreeze Solutions (

Continued

)

Freezing point of Prestone-water mixtures†

% Prestone

Specific gravity

Freezing point

By weight

By volume

15

/15C. (59 F.)

C.

F.

10

9.2

1.013

3.6

25.6

15

13.8

1.019

5.6

22.0

20

18.3

1.026

7.9

17.8

25

23.0

1.033

10.7

12.8

30

28.0

1.040

14.0

6.8

40

37.8

1.053

22.3

8.2

50

47.8

1.067

33.8

28.8

60

58.1

1.079

49.3

56.7

Freezing point of ethyl alcohol-water mixtures

Freezing point

Specific gravity

% alcohol

C.

F.

15.6 C. (60

F.)

by volume

0.990

5

1.7

29

0.984

10

3.3

26

0.978

15

6.1

21

0.972

20

8.3

17

0.964

25

11.1

12

0.955

30

14.4

6

0.945

35

17.8

0

0.933

40

18.3

1

0.922

45

18.9

2

0.910

50

20.0

4

0.899

55

21.7

7

0.887

60

23.3

10

0.875

65

24.4

12

0.864

70

26.7

16

0.852

75

32.2

26

0.840

80

41.7

43

† Eveready Prestone

marketed for antifreeze purposes, is 97% ethylene glycol containing fractional percentages of soluble

and insoluble ingredients to

prevent foaming, creepage and water corrosion in automobile cooling systems.

PHYSICAL

PROPERTIES

5.85

TABLE 5.13

Compositions of Aqueous Antifreeze Solutions (

Continued

)

Freezing point of propylene glycol-water mixtures*

Freezing point

Specific gravity

% glycol

15.6

C. (60

F.)

by volume

C.

F.

1.004

5

1.1

30

1.006

10

2.2

28

1.012

15

3.9

25

1.017

20

6.7

20

1.020

25

8.9

16

1.024

30

12.8

9

1.028

35

16.1

3

1.032

40

20.6

5

1.037

45

26.7

16

1.040

50

33.3

28

Freezing point of glycerol-water mixtures†

Freezing point

% Glycerol

Specific gravity

Specific gravity

by weight

15 /15 C. (59

F.)

20 /20 C. (68 F.)

C.

F.

10

1.02415

1.02395

1.6

29.1

20

1.04935

1.04880

4.8

23.4

30

1.07560

1.07470

9.5

14.9

40

1.10255

1.10135

15.5

4.3

50

1.12985

1.12845

22.0

7.4

60

1.15770

1.15605

33.6

28.5

70

1.18540

1.18355

37.8

36.0

80

1.21290

1.21090

19.2

2.3

90

1.23950

1.23755

1.6

29.1

100

1.26557

1.26362

17.0

62.6

* Values are for pure alcohol. Since some commercial antifreezes contain small amounts of water, slightly higher volume

concentrations than those given in the table may be required. Antifreezes also contain corrosion inhibitors and other additives to

make them function properly as cooling liquids. These affect freezing point slightly and specific gravity to a greater degree. If

a protection table is furnished by the manufacturer it should be used in preference to the values given above for the pure substance.

† The values are those reported by Bosart and Snoddy (

Jour. Ind. Eng. Chem.,

19,

506 (1927)), and Lane (

Jour. Ind. Eng.

Chem.,

17, 924 (1925)) but

modified by adding 2

F to all

temperatures

below 0

F in

accordance

with the suggestion

of the

Procter and

Gamble Co.

5.86

SECTION

5

TABLE 5.13

Compositions of Aqueous Antifreeze Solutions (

Continued

)

Freezing point of magnesium chloride brines

Freezing point

Freezing point

% MgCl

2

Spec. grav.

% MgCl

2

Spec. grav.

by weight

15.6

C. (60

F.)

C.

F.

by weight

15.6 C. (60 F.)

C.

F.

5

1.043

3.11

26.4

18

1.161

22.1

7.7

6

1.051

3.89

25.0

19

1.170

25.6

12.2

7

1.060

4.72

23.5

20

1.180

27.4

17.3

8

1.069

5.67

21.8

21

1.190

30.6

23.0

9

1.078

6.67

20.0

22

1.200

32.8

27.0

10

1.086

7.83

17.9

23

1.210

28.9

20.0

11

1.096

9.05

15.7

24

1.220

25.6

14.0

12

1.105

10.5

13.1

25

1.230

23.3

10.0

13

1.114

12.1

10.3

26

1.241

21.1

6.0

14

1.123

13.7

7.3

27

1.251

19.4

3.0

15

1.132

15.6

4.0

28

1.262

18.3

1.0

16

1.142

17.6

0.4

29

1.273

17.2

1.0

17

1.151

19.7

3.5

30

1.283

16.7

2.0

Freezing point of sodium chloride brines

Compiled in collaboration with C. D. Looker, Ph.D., International Salt Co., Inc.

Freezing point

Freezing point

% NaCl

Spec. grav.

% NaCl

Spec. grav.

by weight

15

C. (59

F.)

C.

F.

by weight

15 C. (59

F.)

C.

F.

0

1.000

0.00

32.0

15

1.112

10.88

12.4

1

1.007

0.58

31.0

16

1.119

11.90

10.6

2

1.014

1.13

30.0

17

1.127

12.93

8.7

3

1.021

1.72

28.9

18

1.135

14.03

6.7

4

1.028

2.35

27.8

19

1.143

15.21

4.6

5

1.036

2.97

26.7

20

1.152

16.46

2.4

6

1.043

3.63

25.5

21

1.159

17.78

0.0

7

1.051

4.32

24.2

22

1.168

19.19

2.5

8

1.059

5.03

22.9

23

1.176

20.69

5.2

9

1.067

5.77

21.6

23.3 (

E

)

1.179

21.13

6.0

10

1.074

6.54

20.2

24

1.184

17.0*

1.4*

11

1.082

7.34

18.8

25

1.193

10.4*

13.3*

12

1.089

8.17

17.3

26

1.201

2.3*

27.9*

13

1.097

9.03

15.7

26.3

1.203

0.0*

32.0*

14

1.104

9.94

14.1

* Saturation temperatures of sodium chloride dihydrate; at these temperatures NaCl · 2H

2 O separates leaving the brine of the

eutectic composition (

E ).