HP DME

Aerosol Propellant

Physical Properties of HP DME and n-Butane Mixtures

Technical Information
For the full range of HP DME/B compositions, thisFigure 1. Saturated Vapor Pressures of HP DME/B Mixturesbulletin presents the saturated vapor pressures and300

liquid densities from 70°F to 130°F (21.1°C to 54.4°C)
and flammability data for the vapor mixture in air.

1008060
40200

The saturated vapor pressure data for HP DME/B are

2010shown in Figure 1 and Table 1. The graph is based on recent

10090807060

components (Refs. 1 and 2).
Figure 2 and Table 2 show the liquid densities that were0HP DME, wt %weight percent HP DME and literature data for the purePressure, psia

experimental data for mixtures containing 28.1 and 61.7

5040

calculated from pure component data (Refs. 1 and 2).

30

The flammability of HP DME/B vapor mixtures in air is20

shown in Figure 3 and Table 3. These data are based onliterature values for the pure components (Refs. 3 and 4)
and experimental values for a 50/50 mole percent

100(44.3/55.7 wt %) HP DME/B mixture.

References1. ASHRAE, Handbook of Fundamentals, 1972.
2. DuPont Fluorochemicals Laboratory data.

102030405060

Temperature, °C

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

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

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

77°F (25°C)

130°F (54.4°C)

a0

35.26

80.83

28.12

59.7

127.1

61.73

75.1

160.7

10085.2

185.0

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

aRef. 1Ref. 2bPressure, psia

HP DME in Propellant
Mixture, wt %bHP DME

Aerosol Propellant

Figure 2. Liquid Densities of HP DME/B Mixtures

Figure 3. Flammability Limits of HP DME/B Mixtures
200.68HP DME/B Mixture Vapor in Air, volume %

0.66

0.67

0.62
Density, g/cc

Data Sources
This Study
Ref. 3Ref. 2

18°F

700.60F°
100

0.58°F

1300.56

0.54

1614121086420.52
020406080

0100020HP DME in Mixture, wt %406080100

HP DME in HP DME/B Mixture, wt %Note: Data calculated from pure component densities.

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

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

Densities, g/cc at
HP DME, wt %

70°F

100°F

130°F

0a

0.57750.55800.5370200.5923

0.57170.5492400.6079

0.58610.561960

0.62430.60120.575380

0.64170.61720.5893a0.604b100baRef. 1
Ref. 2

0.660

0.634

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

Upper

0.0a0.0

1.9

8.5

44.3

50.0

2.1 ± 0.2

9.5 ± 0.2

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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