Mixtures of 1,3,6-naphthalenetrisulfonic acid and 1,3,7-naphthalenetrisulfonic acid — Derivatives containing only sulfo groups, their salts and ethyl esters:
Open in calculator| Code | Description | Units |
|---|---|---|
| 2904.10.15.00 | Mixtures of 1,3,6-naphthalenetrisulfonic acid and 1,3,7-naphthalenetrisulfonic acid | kg |