| Technical Information | |
|---|---|
| Chemical Symbol | He |
| Specific Volume | 96.71 scf/lb |
| CAS Number | 7440-59-7 |
| Molecular Weight | 4.003 g/mol |
| Boiling Point | -452.07 °F |
| Shipping Information | |
|---|---|
| UD DOT Name | Helium, compressed |
| Hazard Class | 2.2 |
| Label | Non-Flammable Gas |
| I.D. Number | UN 1046 |
| Grade | Helium 6.0 |
|---|---|
| Part Number | HE X-6.0 |
| Impurities | Oxygen < 0.2 ppm Moisture < 0.2 ppm Total Hydrocarbons < 0.1 ppm Carbon Monoxide < 0.1 ppm Carbon Dioxide < 0.1 ppm Nitrogen < 0.5 ppm |
*X represents cylinder size
| Grade | Helium 5.5 |
|---|---|
| Part Number | HE X-5.5 |
| Impurities | Oxygen < 1 ppm Moisture < 1 ppm Total Hydrocarbons < 0.5 ppm Nitrogen < 3 ppm |
*X represents cylinder size
| Grade | Helium 5.0 |
|---|---|
| Part Number | HE X-5.0 |
| Impurities | Oxygen < 2 ppm Moisture < 2 ppm Total Hydrocarbons < 0.5 ppm |
*X represents cylinder size
| Grade | Helium 4.8 |
|---|---|
| Part Number | HE X-4.8 |
| Impurities | Total Hydrocarbons < 0.5 ppm |
*X represents cylinder size
| Grade | Helium 4.7 |
|---|---|
| Part Number | HE X-4.7 |
| Impurities | Oxygen < 5 ppm Moisture < 5 ppm |
*X represents cylinder size
| Standard Cylinder Size | Contents (ft3)* | Pressure (psig) | CGA Connection |
|---|---|---|---|
| T | 300 | 2400 | 580 |
| K | 200 | 2015 | 580 |
| Q | 80 | 2015 | 580 |
*Approximate Contents Listed
Click here to open a printable Spec Sheet
