Table 7: Copper complexes.
| S.No. |
Complex |
Solvent |
Color of Spot |
| A |
B |
C |
| 1. |
CP[BTA]A |
88.0 |
85.7 |
83.9 |
Dark green |
| 2. |
CP[BTA]NA |
87.2 |
84.5 |
81.7 |
Chatt black |
A = Acetone = carbon tetrachloride
B = Acetone = Petroleum ether
C = Benzene = Acetone = Petroleum ether.