| General Characteristics |
Sulfur hexafluoride is a colourless, odorless, nontoxic gas. It is readily liquefied and is shipped in steel cylinders as a liquefied gas under its own vapour pressure. |
| |
| Physical Properties |
| Molecular Weight |
146.1 |
| Flammability Limits in air |
Nonflammable |
Specific Gravity,
Gas @ 70°F(21.1°C), 1 atm(Air=1) |
5.11 |
Density,
Gas @ 70°F(21.1°C), 1 atm |
0.385lb/ft^3 (6.2g/l) |
Specific Volume,
Gas @ 70°F(21.1°C), 1 atm |
2.6ft^3/lb (163ml/g) |
| Sublimation Point @ 101.3 kpa |
-82.7°F (-63.7°C) |
| Melting Point @ 224 kpa |
-59.4°F (-50.8°C) |
| Critical Temperature |
114°F (45.5°C) |
| Critical Pressure |
545.2 psia (37.6 bar) |
Toxicity (as HF, a 4 to 1 ratio)
TWA |
Simple asphyxiant
1,000 ppm (OSHA) |
