Table 10.
Chemical structures and λmax of some acid dyes.
| Chemical structures | Dyes | λmax (nm) | Groupings |
|---|---|---|---|
 |
Acid Blue 74 | 612 | indigoid |
 |
Acid Blue 90 | 580 | triphenylmethane |
 |
Red acid 27 (AR27) | 521 | azo |
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