Table 1.
Major Components of Pure Australian Tea Tree Oil (TTO) and the Distribution Range (ISO 4730: 2017 Standard)
| Component | Minimum (%) | Maximum (%) |
|---|---|---|
| Terpinen-4-ol | 35.00 | 48.00 |
| * R isomer ratio | 67.00 | 71.00 |
| * S isomer ratio | 29.00 | 33.00 |
| γ-Terpinene | 14.00 | 28.00 |
| α-Terpinene | 6.00 | 12.00 |
| 1,8-Cineole | <0.01 | 10.00 |
| p-Cymene | 0.50 | 8.00 |
| Terpinolene | 1.50 | 5.00 |
| α-Terpineol | 2.00 | 5.00 |
| α-Pinene | 1.00 | 4.00 |
| Sabinene | <0.01 | 3.50 |
| Aromadendrene | 0.20 | 3.00 |
| Ledene | 0.10 | 3.00 |
| δ-Cadinene | 0.20 | 3.00 |
| Limonene | 0.50 | 1.50 |
| Globulol | <0.01 | 1.00 |
| Viridiflorol | <0.01 | 1.00 |
Note: *Isomers of Terpinen-4-ol.