Chlorophylls (140/141) and their derivatives are green colours in oil soluble and water soluble forms. Chlorophyll has low stability to heat and acid. Copper Chlorophyllins are more stable and can be used in a range of foods.
Stability
| Light Fastness | Good |
| Temperature | Good |
| SO2 Resistant | High |
| Colour at pH | |
| pH 3 | Green |
| pH 5 | Green |
| pH 7 | Green |
| pH 7-9 | Green |