This is not a product
This is an example built for teaching, not merchandise. There is no lot, no supplier and no physical sample corresponding to the figures below.
The whole of Part Two of the learning path teaches you how to read a composition analysis. This page is the sample to practise on.
It shows you three things a good analysis must have: components ordered by boiling point so you can read the order of evaporation, a complete data table with CAS numbers, and a way of comparing several harvests to see natural variation.
Volatility band
14 components from harvest B, ordered by boiling point — which is also the order in which you smell them.
Component table — harvest B
| Component | CAS | Boiling point | % area |
|---|---|---|---|
| α-Pinene | 80-56-8 | 155 °C | 0.6 |
| 3-Octanone | 106-68-3 | 167 °C | 1.4 |
| Limonene | 138-86-3 | 176 °C | 0.4 |
| 1,8-Cineole | 470-82-6 | 176 °C | 1.2 |
| cis-β-Ocimene | 3338-55-4 | 177 °C | 3.1 |
| Linalool | 78-70-6 | 198 °C | 31.4 |
| Camphor | 76-22-2 | 204 °C | 0.5 |
| Terpinen-4-ol | 562-74-3 | 209 °C | 4.2 |
| Borneol | 507-70-0 | 213 °C | 1.8 |
| α-Terpineol | 98-55-5 | 219 °C | 1.1 |
| Linalyl acetate | 115-95-7 | 220 °C | 36.2 |
| Lavandulyl acetate | 25905-14-0 | 230 °C | 3.6 |
| β-Caryophyllene | 87-44-5 | 264 °C | 4.1 |
| Caryophyllene oxide | 1139-30-6 | 280 °C | 0.8 |
Six harvests side by side
The darker the cell, the higher that component — compared within its own range, not with other rows. Read along each row to see how one compound varies from harvest to harvest.
| Harvest A | Harvest B | Harvest C | Harvest D | Harvest E | Harvest F | |
|---|---|---|---|---|---|---|
| Linalyl acetate 220 °C · 33.0–38.9 % | 38.9 |
36.2 |
34.1 |
37.5 |
33.0 |
36.8 |
| Linalool 198 °C · 28.4–34.6 % | 28.4 |
31.4 |
33.9 |
29.8 |
34.6 |
30.2 |
| Terpinen-4-ol 209 °C · 3.9–5.1 % | 3.9 |
4.2 |
5.1 |
4.4 |
4.8 |
4.0 |
| β-Caryophyllene 264 °C · 3.6–4.6 % | 4.6 |
4.1 |
3.8 |
4.4 |
3.6 |
4.2 |
| Lavandulyl acetate 230 °C · 3.0–3.8 % | 3.8 |
3.6 |
3.2 |
3.6 |
3.0 |
3.5 |
| cis-β-Ocimene 177 °C · 2.4–3.4 % | 3.4 |
3.1 |
2.6 |
3.3 |
2.4 |
3.0 |
| Borneol 213 °C · 1.6–2.1 % | 1.6 |
1.8 |
2.0 |
1.8 |
2.1 |
1.7 |
| 1,8-Cineole 176 °C · 0.9–2.0 % | 0.9 |
1.2 |
1.8 |
1.1 |
2.0 |
1.3 |
| 3-Octanone 167 °C · 1.1–1.4 % | 1.3 |
1.4 |
1.2 |
1.4 |
1.1 |
1.3 |
| α-Terpineol 219 °C · 1.0–1.4 % | 1.0 |
1.1 |
1.3 |
1.1 |
1.4 |
1.0 |
Where these figures come from
The values were built within the composition ranges published in the literature for Lavandula angustifolia. They illustrate the structure and the typical variation of the species correctly, but they are not the result of measuring any particular sample.
What the grid above teaches. Look at the 1,8-Cineole row: it goes from 0.9 to 2.0 across six harvests, more than doubling. Linalyl acetate, meanwhile, moves only a few per cent in relative terms. Trace components vary more than main components, and it is they that carry the mark of region and harvest. Read why