DOWFROST HEAT TRANSFER FLUID

DOWFROST HEAT TRANSFER FLUID contains specially formulated industrial inhibitors to prevent corrosion. With low acute oral toxicity, propylene glycol-based fluids are suitable for applications where contact with food or beverage products may occur.

Safety Data Sheet

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Enhanced TDS

Identification & Functionality

Chemical Family: Diols,
Glycols,
Polyglycols,
Polyols,
Propylene Glycols
Product Type: Heat Transfer Fluid
Tilley Product Number: 11821-01
Technologies: Ready-to-Use Products
Product Families: Ready-to-Use Products — Fluids & Lubricants
Heat Transfer Fluids

Features & Benefits

Ready-to-Use Product Features: Corrosion Resistant,
Food Contact Acceptable

Properties

Physical Form

Typical Properties


	Value	Units	Test Method / Conditions
Recommended Use Temperature Range	- 45 to 120	°C	-
Reserve Alkalinity	min. 10	ml	-
pH (at 50% glycol)	9 - 10	-	-
Specific Gravity (at 15/15°C)	1.050 - 1.060	-	-

Composition


	Value	Units	Test Method / Conditions
Propylene Glycol Content	96	wt. %	-
Performance Additives	4	wt. %	-

Technical Details & Test Data

Properties of Heat Transfer Fluid

Typical Concentrations of DOWFROST HD Fluid
Required to Provide Freeze and Burst Protection at Various Temperatures

	Percent DOWFROST HD Fluid Concentration Required
Temperature (°C)	For Freeze Protection (Volume %)	For Burst Protection (Volume %)
-7	18	12
-12	29	20
-18	36	24
-23	42	28
-29	46	30
-34	50	33
-40	54	35
-46	57	35
-51	60	35

Typical Freezing and Boiling Points of DOWFROST HD Fluid^†

Propylene Glycol (Wt.%)	Propylene Glycol (Vol.%)	DOWFROST HD (Wt. %)	DOWFROST HD (Vol. %)	Freezing Point (°C)	Boiling Point (°C at 101 kPa)	Degree Brix^††	Refractive Index (at 22°C)
0.0	0.0	0.0	0.0	0	100	0	1.3328
5.0	4.8	5.3	5.1	-1.6	100	4.8	1.3383
10.0	9.6	10.7	10.2	-3.3	100	8.4	1.3438
15.0	14.5	16.0	15.4	-5.1	100	12.9	1.3495
20.0	19.4	21.3	20.6	-7.1	100.6	15.4	1.3555
25.0	24.4	26.6	26.0	-9.6	101.1	19	1.3615
30.0	29.4	31.9	31.3	-12.7	102.2	22	1.3675
35.0	34.4	37.2	36.6	-16.4	102.8	26.1	1.3733
40.0	39.6	42.6	42.1	-21.1	103.9	29.1	1.379
45.0	44.7	47.9	47.6	-26.7	104.4	31.8	1.3847
50	49.9	53.2	53.1	-33.5	105.6	34.7	1.3903
55.0	55.0	58.5	58.5	-41.6	106.1	38	1.3956
60.0	60.0	63.8	63.8	-51.1	107.2	40.6	1.4008
65.0	65.0	69.1	69.1	b	108.3	42.1	1.4058
70.0	70.0	74.5	74.5	b	110	44.1	1.4104
75.0	75.0	79.8	79.8	b	113.9	46.1	1.415
80.0	80.0	85.1	85.1	b	118.3	48	1.4193
85.0	85.0	90.4	90.4	b	125	50	1.4235
90.0	90.0	95.7	95.7	b	132.2	51.4	1.4275
95.0	95.0	a	a	b	154.4	52.8	1.4315

DOWFROST HD Inhibited Propylene Glycol-based Heat Transfer Fluid

Saturation Properties of DOWFROST HD Fluid at 30%
Propylene Glycol Concentration by Volume

Temperature (°C)	Specific Heat (kJ/(kg)(K))	Density (kg/m³)	Thermal Conductivity (W/mK)	Viscosity (mPa·s)
10	3.756	1043.85	0.4344	4.5068
40	3.841	1029.85	0.4622	1.6295
65	3.913	1014.87	0.4771	0.9144
90	3.984	996.86	0.4846	0.604
120	4.070	971.26	0.4838	0.4246

Saturation Properties of DOWFROST HD Fluid at 40%
Propylene Glycol Concentration by Volume

Temperature (°C)	Specific Heat (kJ/(kg)(K))	Density (kg/m³)	Thermal Conductivity (W/mK)	Viscosity (mPa·s)
-20	3.453	1066.76	0.3635	48.9043
10	3.564	1055.38	0.3936	7.2173
40	3.675	1039.77	0.4150	2.2389
65	3.767	1023.55	0.4262	1.1762
90	3.859	1004.39	0.4313	0.7462
120	3.970	977.53	0.4294	0.5084

Saturation Properties of DOWFROST HD Fluid at 50%
Propylene Glycol Concentration by Volume

Temperature (°C)	Specific Heat (kJ/(kg)(K))	Density (kg/m³)	Thermal Conductivity (W/mK)	Viscosity (mPa·s)
-30	3.165	1081.98	0.3246	172.8273
-20	3.210	1078.51	0.3336	73.0193
10	3.346	1065.40	0.3560	10.6481
40	3.481	1048.23	0.3716	3.1103
65	3.594	1030.83	0.3792	1.5483
90	3.707	1010.61	0.3821	0.9339
120	3.843	982.63	0.3792	0.6029