| 2901 | Acyclic hydrocarbons: | 14 | Calc rate |
| 2902 | Cyclic hydrocarbons: | 21 | Calc rate |
| 2903 | Halogenated derivatives of hydrocarbons: | 82 | Calc rate |
| 2904 | Sulfonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated: | 31 | Calc rate |
| 2905 | Acyclic alcohols and their halogenated, sulfonated, nitrated or nitrosated derivatives: | 50 | Calc rate |
| 2906 | Cyclic alcohols and their halogenated, sulfonated, nitrated or nitrosated derivatives: | 12 | Calc rate |
| 2907 | Phenols; phenol-alcohols: | 20 | Calc rate |
| 2908 | Halogenated, sulfonated, nitrated or nitrosated derivatives of phenols or phenol-alcohols: | 21 | Calc rate |
| 2909 | Ethers, ether-alcohols, ether-phenols, ether-alcohol- phenols, alcohol peroxides, ether peroxides, acetal and hemiacetal peroxides, ketone peroxides (whether or not chemically defined), and their halogenated, sulfonated, nitrated or nitrosated derivatives | 35 | Calc rate |
| 2910 | Epoxides, epoxyalcohols, epoxyphenols and epoxyethers, with a three-membered ring, and their halogenated, sulfonated, nitrated or nitrosated derivatives: | 8 | Calc rate |
| 2912 | Aldehydes, whether or not with other oxygen function; cyclic polymers of aldehydes; paraformaldehyde: | 25 | Calc rate |
| 2914 | Ketones and quinones, whether or not with other oxygen function, and their halogenated, sulfonated, nitrated, or nitrosated derivatives: | 35 | Calc rate |
| 2915 | Saturated acyclic monocarboxylic acids and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives: | 53 | Calc rate |
| 2916 | Unsaturated acyclic monocarboxylic acids, cyclic monocarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives: | 48 | Calc rate |
| 2917 | Polycarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives: | 40 | Calc rate |
| 2918 | Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives: | 66 | Calc rate |
| 2919 | Phosphoric esters and their salts, including lactophosphates; their halogenated, sulfonated, nitrated or nitrosated derivatives: | 7 | Calc rate |
| 2920 | Esters of other inorganic acids of nonmetals (excluding esters of hydrogen halides) and their salts; their halogenated, sulfonated, nitrated or nitrosated derivatives: | 15 | Calc rate |
| 2921 | Amine-function compounds | 81 | Calc rate |
| 2922 | Oxygen-function amino-compounds: | 78 | Calc rate |
| 2923 | Quaternary ammonium salts and hydroxides; lecithins and other phosphoaminolipids, whether or not chemically defined: | 8 | Calc rate |
| 2924 | Carboxyamide-function compounds; amide-function compounds of carbonic acid: | 51 | Calc rate |
| 2925 | Carboxyimide-function compounds (including saccharin and its salts) and imine-function compounds: | 14 | Calc rate |
| 2926 | Nitrile-function compounds: | 23 | Calc rate |
| 2929 | Compounds with other nitrogen function: | 20 | Calc rate |
| 2930 | Organo-sulfur compounds: | 45 | Calc rate |
| 2931 | Other organo-inorganic compounds: | 49 | Calc rate |
| 2932 | Heterocyclic compounds with oxygen hetero-atom(s) only: | 37 | Calc rate |
| 2933 | Heterocyclic compounds with nitrogen hetero-atom(s) only: | 134 | Calc rate |
| 2934 | Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: | 44 | Calc rate |
| 2935 | Sulfonamides: | 19 | Calc rate |
| 2936 | Provitamins and vitamins, natural or reproduced by synthesis (including natural concentrates), derivatives thereof used primarily as vitamins, and intermixtures of the foregoing, whether or not in any solvent: | 21 | Calc rate |
| 2937 | Hormones, prostaglandins, thromboxanes and leukotrienes, natural or reproduced by synthesis; derivatives and structural analogues thereof, including chain modified polypeptides, used primarily as hormones: | 34 | Calc rate |
| 2938 | Glycosides, natural or reproduced by synthesis, and their salts, ethers, esters and other derivatives: | 2 | Calc rate |
| 2939 | Alkaloids, natural or reproduced by synthesis, and their salts, ethers, esters and other derivatives: | 27 | Calc rate |
| 2941 | Antibiotics: | 21 | Calc rate |