Original
By certification 
The quality of this product has reached international standard with high purity and very low contents of sulphur, moisture and olefin. It could be used in high grade clean aerosol products and as a new hydrocarbon refrigerant with excellent performance. Environmental friendly, and with no greenhouse effect, it also has no destruction to the ozone layer. With the high evaporation latent heat, efficient cooling capacity, good mobility, low transport pressure and power consumption, slow load temperature rise and compatible with lubricating oil of all kinds of compression engine, thus it can be used to substitute for R12 in the products of refrigerator, freezer, cold drink machine and so on.
| Item | Quality index |
| Iso-butane content (v/v) % | ≥99.9 |
| Unsaturated hydrocarbon content (v/v) % | ≤0.01 |
| Sulphur content (ppm) | ≤1 |
| Moisture content (v/v) % | ≤0.0005 |
| residue ml/100ml | ≤0.01 |
| odour | no |
Iso-butane for condensing agent in chemical factories
project |
quality index |
|
Iso-butane content (wt) % |
≥ |
94 |
n-butane    (wt) % |
≤ |
1.5 |
propane      (wt) % |
≤ |
3.0 |
buteneï¼1Â Â Â (ppm) |
≤ |
97 |
butadiene    (ppm) |
≤ |
3 |
ethyne      (ppm) |
≤ |
0.5 |
C3 and above  (wt) % |
≤ |
2.1 |
C5 and above  ppm(wt) |
≤ |
600 |
Carbonyl group（ï¼0）ppm（wt） |
≤ |
2.5 |
carbinol（ï¼OH)ppm（wt） |
≤ |
6 |
carbon monoxide  ppm（wt） |
≤ |
1 |
carbon dioxide  ppm（wt） |
≤ |
5 |
hydrogen        ppm（wt） |
≤ |
20 |
oxygen        ppm（wt） |
≤ |
5 |
water        ppm（wt） |
≤ |
20 |
sulphur      ppm（wt） |
≤ |
8 |
chlorine Cl-  ppm（wt） |
≤ |
1 |
