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Due to patent constraints, Solvay does not market Solkane®365mfc and of blends containing Solkane®365mfc in the USA and Canada for use as a blowing agent to foam a plastic based on an isocyanate. See the full warning.
Physical properties
| Chemical name |
1,1,1,3,3-Pentafluorobutane |
| Formula |
CF3-CH2-CF2-CH3
|
| Molecular weight |
kg/kmol |
148.09 |
| Boiling point |
°C at 1.013 bar |
40.2 |
| Freezing point |
°C |
- 35 |
| Flammable |
yes
|
| Vapour pressure at 0 °C |
kPa |
19 |
| Vapour pressure at 20 °C |
kPa |
47 |
| Vapour pressure at 40 °C |
kPa |
142 |
| Density of liquid at 20 °C |
kg/dm³ |
1.27 |
| Density of vapour at 20 °C |
Air = 1 |
5.7 |
| Therm. conductivity of vapour at 25 °C |
mW/m.K |
10.6 |
| Viscosity of liquid at 20 °C |
µPa.s |
452 |
| Minimum ignition energy |
mJ |
10.4 |
| Flammability limits |
Vol.-% |
13.3 |
| Auto ignition temperature |
°C |
580 |
| Log P o/w |
1.6
|
| Solubility in water |
g/kg at 23 °C |
0.84 |
Miscibility
Solkane 365mfc has a good miscibility with other solvents (e.g. Acetone, Ethanol, Pentane, fluorinated compounds). It often forms azeotropes:
| Compound |
Composition
pwb Solkane 365mfc
|
Boilling point
°C
|
| Methanol |
94
|
37.5
|
| Ethanol |
97.5
|
39.5
|
| n-Pentane |
58
|
27
|
| Iso-Pentane |
46
|
22.5
|
| Cyclo-Pentane |
72
|
32
|
| 1,2-trans-Dichloroethylene |
70
|
36
|
| Galden HT 55 |
65
|
36
|
| Galden HT 70 |
66
|
37
|
Materials Compatibility
| Thermoplastics |
Percent change of weight |
| PVC |
- 0.02 |
| PE-HD |
0.4 |
| PMMA |
57 |
| Polycarbonate |
0.3 |
| PP |
0.2 |
| Nylon 66 |
- 0.3 |
| PS |
0.2 |
|
Elastomers
|
| Neoprene |
1.0 |
| Viton A |
90.5 |
| EPDM |
1.6 |
| Natural rubber |
7.2 |
| Nitril rubber |
2.5 |
| Silicone |
16.1 |
| Change in % by weight after 7 days immersion. |
Stability
Solkane 365mfc has a thermal and chemical stability even higher than Solkane 141b. It should not be exposed to strong alkaline compounds or alkali metals. Under high temperatures and/or pressure, hazardous reactions are possible with reactive metals e.g. Zinc, Aluminium and its alloys, Magnesium as well as with air. The user should pay attention to our SDS for additional information.
Quality
| Purity of Solkane 365mfc |
99.7 % min. |
| Water |
100 ppm max. |
| Acid |
1 ppm max. |
| Non volatile residue |
100 ppm max. |
Flammability
Solkane 365mfc has a flash point below - 27 °C (DIN 51755, Teil 2).
Although, it is flammable, the minimum ignition energy is quite high and is 10.4 mJ (25 °C, 8 Vol.% in air at 1 bar). This is around 50 times higher than of n-pentane and means, that low energy ignition sources could not ignite the material.
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