Anti Freeze Freezing Boil Temperatures

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Anti Freeze Freezing Boil Temperatures

Heat Transfer Engineering
Thermodynamics

Anti Freeze Ethylene Glycol Freezing and Boil Temperatures

Anti Freeze ( ethylene glycol and propylene glycol ), when not diluted with water, are actually less corrosive than water is with common construction metals. However, once diluted with water (as water from which they are prepared: when uninhibited glycols thermally degrade and oxidize with use, they form acidic degradation products, which create an increasingly more corrosive environment if corrosion inhibitors and pH buffering compounds are not present. The amount of oxidation is influenced by temperature, degree of aeration, and type of metal components to which the glycol solution is exposed.

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% Anti Freeze (Etheylene Glycol)		Feezing Temp ˚ F	Boiling Temp ˚ F at 14.7 psi
By Mass	By Volume	Feezing Temp ˚ F	Boiling Temp ˚ F at 14.7 psi
0.0	0.0	32.0	212
5.0	4.4	29.4	213
10.0	8.9	26.2	214
15.0	13.6	22.2	215
20.0	18.1	17.9	216
21.0	19.2	16.8	216
22.0	20.1	15.9	216
23.0	21.0	14.9	217
24.0	22.0	13.7	217
25.0	22.9	12.7	218
26.0	23.9	11.4	218
27.0	24.8	10.4	218
28.0	25.8	9.2	219
29.0	26.7	8.0	219
30.0	27.7	6.7	220
31.0	28.7	5.4	220
32.0	29.6	4.2	220
33.0	30.6	2.9	220
34.0	31.6	1.4	220
35.0	32.6	-0.2	221
36.0	33.5	-1.5	221
37.0	34.5	-3.0	221
38.0	35.5	-4.5	221
39.0	36.5	-6.4	221
40.0	37.5	-8.1	222
41.0	38.5	-9.8	222
42.0	39.5	-11.7	222
43.0	40.5	-13.5	223
44.0	41.5	-15.5	223
45.0	42.5	-17.5	224
46.0	43.5	-19.8	224
47.0	44.5	-21.6	224
48.0	45.5	-23.9	224
49.0	46.6	-26.7	224
50.0	47.6	-28.9	225
51.0	48.6	-31.2	225
52.0	49.6	-33.6	225
53.0	50.6	-36.2	226
54.0	51.6	-38.8	226
55.0	52.7	-42.0	227
56.0	53.7	-44.7	227
57.0	54.7	-47.5	228
58.0	55.7	-50.0	228
59.0	56.8	-52.7	229
60.0	57.8	-54.9	230
65.0	62.8	*	235
70.0	68.3	*	242
75.0	73.6	*	248
80.0	78.9	-52.2	255
85.0	84.3	-34.5	273
90.0	89.7	-21.6	285
95.0	95.0	-3.0	317

*Freezing points are below –60°F.

References:

Dow Chemical (2001b)