Custom mix of C0 -C4 naphthalenes 0711.10 Naphthalene 0713.11 2-Methylnaphthalene 0712.11 1-Methylnaphthalene 0715.12 2-Ethylnaphthalene 0714.12 1-Ethylnaphthalene 0729.12 2,6-Dimethylnaphthalene 0731.12 2,7-Dimethylnaphthalene 0726.12 1,7-Dimethyln