| Synonyms | |
| Definition | |
|---|---|
| Einecs | 231-147-0 |
| Chemical name | Argon |
| Chemical formula | Ar |
| Atomic weight | 40 |
| Assay | Not less than 99 % |
| Description | Colourless, odourless, non-flammable gas |
| Identification | |
| Purity | |
| Water content | Not more than 0,05 % |
| Methane and other hydrocarbons | Not more than 100 μl/l (calculated as methane) |