| Both the formaldehyde and the naphthol exercise tanning actions, but the process is not used in practise. |
| Various additions have been made from time to time to the naphthol bath. |
| So instead of phenol, other coal tar products such as cresol, naphthol or benzene itself may be used. |
| The second step involved adsorption of the toxicologically safe anionic dyes fast green and naphthol yellow S to the clay complexes. |
| Soluble and insoluble proteins were stained specifically in blue with naphthol blue-black and polysaccharides were stained in red with periodic acid. |
| When this compound is combined with naphthol diazo-azo dyes are produced. |
