
| Item  | Quality index  | Testing method  | |
| Appearance | Colorless transparent liquid | Eye measurement | |
| Isoamylene purity % (m/m) ≥ | 99.5 | Q/ZLC005-2005 | |
| 2-Methyl-2-butene content% (m/m) ≥ | 89 | Q/ZLC005-2005 | |
| 2-Methyl-1-butene content% (m/m) ≤ | 11 | Q/ZLC005-2005 | |
| Chrominance /( Platinum - Co ) NO. ≤ | 30 | GB/T3143 | |
| Moisture % (m/m) ≤ | 0.05 | GB/T6283 | |
| Density(kg/L) 20 ℃ | 0.658~0.662 | GB/T4472 | |
| Boiling range ℃ | Initial boiling point ≥ | 30.5 | GB/T7534 | 
| Dry point ≤ | 39.0 | ||
| TAME content % (m/m) ≤ | 0.01 | Q/ZLC005-2005 | |
| Methanol(m/m) ≤ | 0.05 | Q/ZLC005-2005 | |
| Dimethyl enther(m/m) ≤ | 0.05 | Q/ZLC005-2005 | |