| 284110 | Aluminates |
| 284120 | Chromates Of zinc or Of lead |
| 284130 | 284130 - Salts; sodium dichromate |
| 284140 | 284140 - Potassium dichromate |
| 284150 | 284150 - Salts; chromates, dichromates, peroxochromates; n.e.c. in hea |
| 284160 | 284160 - Manganites, manganates and permanganates of metals |
| 284161 | 284161 - Salts; of oxometallic or peroxometallic acids, manganites, ma |
| 284169 | 284169 - Salts; of oxometallic or peroxometallic acids, manganites, ma |
| 284170 | 284170 - Salts; molybdates |
| 284180 | 284180 - Salts; tungstates (wolframates) |
| 284190 | 284190 - Salts of oxometallic or peroxometallic acids; n.e.c. in headi |