Property, value, unit, test method Ethylene purity, ≥ 99.9, mol%, Hydrogen, 10, ppm vol, astm d2504 Carbon monoxide, 2, ppm vol, astm d2504 Carbon dioxide, 5, ppm vol, astm d2505 Total sulfur, 2, ppm vol, astm d6667 Methane+ethane 1000, ppm vol, astm d2505 Acetylene, 5, ppm vol, astm d2505 Totalc3& higher, 10, ppm vol, astm d2505 Total combined nitrogen calculated as nh3, 1, ppm vol, astm d4629 Water, 10, ppm vol, astm d5454 Oxygen, 5, ppm vol, equipment manufacturing Methanol and other solvents, 10, ppm vol, astm d4815
