Argon Ar
Argon: Argon is used, primarily in liquid form, as the target for direct dark matter searches. The interaction of a hypothetical WIMP particle with the argon nucleus produces scintillation light that is then detected by photomultiplier. As with most other liquefied noble gases, argon has a high scintillation light yield, is transparent to its own scintillation light, and is relatively easy to purify.
Properties :
- Non-flammable
- Non-toxic
- Odourless
- Colourless
| Gas quality |
Impurities |
COMMERCIAL
N3.5
9.995% |
| O2 |
< |
3 ppm |
| H2O |
< |
2 ppm |
| N2 |
< |
2 ppm |
| CnHm |
< |
0.2 ppm |
|
GRADE II
N3.8
9.998% |
| O2 |
< |
3 ppm |
| H2O |
< |
2 ppm |
| N2 |
< |
2 ppm |
| CnHm |
< |
0.2 ppm |
|
GRADE I
N5.5
99.9995% |
| O2 |
< |
3 ppm |
| H2O |
< |
0.5 ppm |
| N2 |
< |
2 ppm |
| CO+CO2 |
|
0.2 ppm |
| CnHm |
< |
1 ppm |
|
RESEARCH GRADE
N6
99.9999% |
| O2 |
< |
0.5 ppm |
| H2O |
< |
0.1 ppm |
| N2 |
< |
0.3 ppm |
| H2 |
|
0.1 ppm |
| Co |
< |
0.1 ppm |
| CO2 |
< |
0.1 ppm |
| CnHm |
< |
0.1 ppm |
|
| Chemical formula |
: |
Ar |
| Molecular weight |
: |
39.95 g/mol |
| Boiling point at 1.013 bar |
: |
-185.9 0C |
| Gas density, absolute |
: |
- 1.69 kg/m3 (15 0C, 1.013 bar) |
| Gas density, relative air |
: |
- 1.38 |
| Cylinder connection: |
: |
- BS Standard or CGA on request |
| Cylinder colour: |
: |
- Grey |
