| Chapter Code | Chapter Description |
|---|
| 29270010 | PARA AMINO-AZO-BENZENE |
| 29280010 | ISONIAZID |
| 29291010 | ISOCYANATES : PHENYL ISOCYANATE |
| 29291020 | ISOCYANATES : TOLUENE DI-ISOCYANATE |
| 29291090 | ISOCYANATES : OTHER |
| 29299010 | N,N-DIETHYLPHOSPHORAMIDIC DICHLORIDE |
| 29299020 | N,N-DIISOPROPYLPHOSPHORAMIDIC DICHLORIDE |
| 29299040 | N,N-DIMETHYLPHOSPHORAMIDIC DICHLORIDE |