HP DME

Aerosol Propellant

Physical Properties of HP DME and Isobutane Mixtures

Technical Information
For the full range of HP DME/I compositions, this bulletin

Figure 1. Saturated Vapor Pressures of HP DME/I Mixtures

presents the saturated vapor pressures and liquid300

densities from 70°F to 130°F (21.1°C to 54.4°C) and

100
90
6040

flammability data for the vapor mixtures in air.
200

The saturated vapor pressure data for HP DME/I are shown

2010in Figure 1 and Table 1. The graph is based on recent0components (Refs. 1 and 2).
Figure 2 and Table 2 show the liquid densities, which werecalculated from pure component data (Refs. 1 and 2).

HP DME, wt %weight percent HP DME and literature data for the purePressure, psia

experimental data for mixtures containing 28.1 and 61.7
100
90
80
706050The flammability of HP DME/I vapor mixtures in air is

40

shown in Figure 3 and Table 3. These data are based on

30

literature values for the pure components (Refs. 3 and 4)
and experimental values for a 50/50 mole percent(44.3/55.7 wt %) HP DME/I mixture.

20
Temperature, °CReferences
1. ASHRAE, Handbook of Fundamentals, 1972.
2. DuPont Fluorochemicals Laboratory data.

Note: Data based on pure component data plus shown experimental points (•)

Table 1. Saturated Vapor Pressures of HP DME/I Mixtures—
Experimental Data

3. Bulletin 503, Bureau of Mines, “Limits of Flammability ofGases and Vapors”.

77°F (25°C)

130°F (54.4°C)

28.12

70.5

148.5

4. Handbook of Aerosol Technology, P.A. Sanders, Van
Nostrand Reinhold Company, 1979.

Ref. 1
Ref. 2abPressure at Shown Temperature, psia

HP DME in Propellant
Mixture, wt %
61.73

81.6

172.90a50.53

109.72100b86.0

184.0

HP DME

Aerosol Propellant

Figure 2. Liquid Densities of HP DME/I Mixtures

Figure 3. Flammability Limits of HP DME/I Mixtures
200.66HP DME/I Mixture Vapor in Air, volume %0.62°F

0.60
Density, g/cc

Data Sources
This Study
Ref. 3
Ref. 4180.64

70

0.58

0°F

100.560°F

130.54161412108640.52

20.50
020406080

0100020HP DME in Mixture, wt %406080
HP DME in HP DME/I Mixture, wt %100

Note: Data calculated from pure component densities.

Table 2. Calculated Liquid Densities of HP DME/I Mixtures

Table 3. Flammability Limits of HP DME/I Vapor Mixtures in Air
Concentration of HP DME A inHP DME/I Mixture

Densities, g/cc at
HP DME, wt %

70°F

100°F

130°F

0a

0.55590.53470.5117200.5740

0.55170.5278400.5933

0.57040.545060

0.61400.59010.5634800.6362

0.61130.5830a0.604b

100ba

Ref. 1
Ref. 2

0.660

0.634

Flammability Limits in Air, vol %Weight, %Mole, %

Lower

Upper

0.0a

0.0

1.8

8.4

44.3

50.0

1.7 ± 0.3

9.3 ± 0.3

100.0b,c100.0

3.4, 3.4

18.0, 15.8

Ref. 3
Ref. 4cRef. 2bFor more information about propellants from Chemours, visit Chemours.com/Propellants
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