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| Sub-Chapter | 2005 | 2006 | 2007 | 2008 | 2009 |
| Carbon | $2,859 | | | | |
| Hydrogen, rare gases and other non-metals. | $516,055 | $407,751 | $334,360 | $535,923 | $686,015 |
| Hydrogen chloride (hydrochloric acid); | | | | $141,445 | $23,729 |
| Sulphuric acid; oleum. | | | $2,501 | | $236 |
| Other inorganic acids and oxygen compounds | $123,089 | | $1,231 | $4,266 | $25,520 |
| Ammonia, anhydrous or in aqueous solution. | | | $21,451 | $4,641 | |
| Sodium hydroxide (caustic soda); | | | | $41 | $5,416 |
| Iron oxides and hydroxides | $1,093 | | | $101 | |
| Titanium oxides. | $397 | | | | |
| Chlorides, chloride oxides and chloride hydroxides | $14,229 | | $4,872 | $68,824 | $125,826 |
| Hypochlorites; commercial calcium hypochlorite | $1,612 | $499 | $177 | $7 | $106,060 |
| Sulphides; polysulphides | | | $553 | | |
| Sulphates; alums; peroxosulphates (persulphates). | | | | | $1,106 |
| Nitrites; nitrates. | | | | | $556 |
| Carbonates; peroxocarbonates (percarbonates) | $136,978 | $14,274 | $3,519 | | $826 |
| Silicates; commercial alkali metal silicates. | $22,927 | $776 | | | |
| Borates; peroxoborates (perborates). | | | | $221 | |
| Radioactive chemical elements and radioactive isotopes | $13,617 | $26,274 | $12,470 | $11,302 | $78,309 |
| Isotopes other than those of heading 28.44 | | $1,914 | $1,604,108 | | |
| Carbides, whether or not chemically defined. | | $2,297 | $23,521 | | |
| Total | $832,856 | $453,785 | $2,008,763 | $766,771 | $1,053,599 |
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