| Quality indicators | | Isobutane containing% ≥ | 99.9 | | Propane Content% ≤ | 0.003 | | Butane containing% ≤ | 0.006 | | The content of unsaturated hydrocarbons ≤ | 0.001 | | Sulfur content (ppm) ≤ | 1 | | Water content(ppm) ≤ | 1 | | Remnants of ml/100ml ≤ | 0.01 | | Appearance odor | colorless and tasteless |
|