| Tariff Classification |
| section 06 | Products of the chemical or allied industries |
| chapter 29 | Organic chemicals |
| 29.18 | Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives: |
| －Carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives: |
| 2918.15 | －－Salts and esters of citric acid |
|