| 1. | o-ACETOACETANISIDIDE | 2924.29 | | 2. | o-ACETOACETOTOLUIDIDE | 2924.29 |
| 3. | O-ACETYLSALICYLIC ACID and its salts and esters | 2918.22 |
| 4. | o-AMINOBENZENESULFONIC ACID | 2921.42 |
| 5. | o-ANISIDINE | 2922.22 |
| 6. | o-CHLOROBENZONITRILLE | 2926.90 |
| 7. | o-DICHLOROBENZENE | 2903.61 |
| 8. | O,O-DIETHYL-S-[(6-CHLORO-2-OXOBENZOXAZOLIN-3-YL)METHYL]PHOSPHORODITHIOATE | 2934.90 |
| 9. | O,O-DIMETHYL-O-(4-NITRO-m-TOLYL)PHOSPHOROTHIOATE | 2920.10 |
| 10. | o-DIQUAT DIBROMIDE | 2933.99 |
| 11. | o-FLUORONITROBENZENE | 2904.90 |
| 12. | o-ISOCYANIC ACID, o-TOLYL ESTER | 2929.10 |
| 13. | OAK | Ch. 44 |
| tanning extract | 3201.30 |
| 14. | OATS. See CEREALS | |
| 15. | OBECHE | Ch. 44 |
| 16. | OBOES | 9205.90 |
| 17. | OCARINAS | 9205.90 |
| 18. | OCEANOGRAPHIC INSTRUMENTS AND APPLIANCES | 9015.10-80 |
| 19. | OCELOTS | |
| furskins, raw | 4301.80 |
| furskins, tanned or dressed | 4302.19-30 |
| 20. | OCTABROMODIPHENYL OXIDE | 2909.30 |
| 21. | OCTADECAN-1-OL | 2905.17 |
| 22. | OCTANOL | |
| isomers thereof | 2905.16 |
| 23. | OCTOPUS | 0307.51-59 |
| 24. | OCTYL ALCOHOL | |
| isomers thereof | 2905.16 |
| 25. | OCTYLPHENOL | |
| isomers and its salts | 2907.13 |
| 26. | ODOMETERS | 9029.10 |
| 27. | ODORIFEROUS PREPARATIONS | |
| used as raw materials | 3302.10-90 |
| which operate by burning | 33-3, 3307.41 |
| 28. | OFFICE FURNITURE | |
| of metal | 9403.10 |
| of wood | 9403.30 |
| 29. | OFFICE MACHINES | 8469.10-8472.90 |
| 30. | OFFICE OR DESK EQUIPMENT | |
| of base metals | 8304.00 |
| 31. | OFFICE SUPPLIES | |
| of plastics | 3926.10 |
| 32. | OFFSET PLATES | |
| of paper | 4816 |
| 33. | OFFSET PRINTING MACHINERY | 8443.11-19 |
| 34. | OIL FILTERS | 8421.23 |
| 35. | OIL FOOTS AND DREGS | 15-4 |
| 36. | OIL SEEDS | 1201.00-1207 |
| flours and meals of | 12-2, 1208 |
| 37. | OIL SHALE | 2714.10 |
| 38. | OILCAKE | 2304-2306 |
| 39. | OILS | |
| animal or vegetable | Ch. 15 |
| essential | 3301.11-29 |
| from coaltar | 2707 |
| lubricating | 2711.19 |
| petroleum | 27-2, 2709.00, 2710, 2713.11-90 |
| rosin | 3806 |
| terpenic | 3805 |
| wood tar | 3807.00 |
| 40. | OKOUME | Ch. 44 |
| 41. | OLEAGINOUS FRUITS | 1201.00-1207 |
| 42. | OLEFINS | |
| halogenated, polymers of, in primary forms | 3904 |
| linear alpha, unmixed, C6-C30 | 2901.29 |
| polymers of,in primary forms | 3902 |
| 43. | OLEIC ACID and its salts and esters | 1519.12, 2916.15 |
| 44. | OLEO-OIL | 1503.00, 1517-1518 |
| 45. | OLEORESINS | |
| nonvolatile | 3301.30 |
| 46. | OLEOSTEARIN | 1503.00, 1516 |
| 47. | OLEUM | 2807.00 |
| 48. | OLEYL ALCOHOL | 1519.30 |
| 49. | OLIVE OIL | 15-2, 1509-1510 |
| 50. | OLIVES. See VEGETABLES | |
| 51. | ONION SEEDS | 1209.91 |
| 52. | ONIONS. See VEGETABLES | |
| 53. | OPACIFIERS | |
| prepared, for ceramics, enamelling or glass | 3207.10 |
| 54. | OPACIFYING PREPARATIONS | |
| for X-ray examination | 30-3(d), 3006.30 |
| 55. | OPERATING TABLES | 9402 |
| 56. | OPHTHALMIC INSTRUMENTS AND APPLIANCES | 9018.50 |
| 57. | OPIUM | 13-1, 1302.11 |
| alkaloids of | 2939.11-.19 |
| 58. | OPTICAL APPLIANCES n.e.s.o.i | 9013.10-80 |
| 59. | OPTICAL APPLIANCES AND INSTRUMENTS | Ch. 90 |
| 60. | OPTICAL ELEMENTS | 7014.00 |
| of any material except glass not optically worked, mounted | 9002.11-90 |
| of any material except glass not optically worked, unmounted | 9001.10-90 |
| 61. | OPTICAL FIBER BUNDLES AND CABLES | 8544.70, 9001.10 |
| 62. | OPTICAL FIBERS | 9001.10 |
| 63. | OPTICAL INSTRUMENTS, APPLIANCES OR MACHINES | |
| for measuring or checking | 90-5 |
| n.e.s.o.i | 9013.10-80 |
| 64. | OPTICAL MICROSCOPES | 9011.10-80 |
| 65. | OPTICAL READERS | |
| for automatic data processing machines | 8471.92-99 |
| 66. | OPTICAL TELESCOPES | 9005.80 |
| 67. | OPTICALLY WORKED GLASS | Ch. 90 |
| 68. | ORACHE SPINACH (GARDEN SPINACH). See VEGETABLES | |
| 69. | ORAL HYGIENE PREPARATIONS | 3306.10-90 |
| 70. | ORANGE LEAD | 2824.20 |
| 71. | ORANGE PEEL | 0814.00 |
| 72. | ORANGES. See FRUIT | |
| essential oils of | 3301.12 |
| 73. | ORDER BOOKS | |
| of paper or paperboard | 4820.10 |
| 74. | ORE | |
| machinery for sorting, screening, separating, washing, crushing, grinding, mixing or kneading | 8474.10-39 |
| 75. | ORES AND CONCENTRATES | 26-2, 2601-2617 |
| 76. | ORGANIC CHEMICALS | |
| See also names of specific organic chemicals | Ch. 29 |
| 77. | ORGANO-INORGANIC CHEMICALS | 28-2 |
| 78. | ORGANO-INORGANIC COMPOUNDS | 29-6, 2930-2931 |
| 79. | ORGANO-MERCURY COMPOUNDS | 2931.00 |
| 80. | ORGANO-SILICON COMPOUNDS | 2931.00 |
| 81. | ORGANO-SULFUR COMPOUNDS | 29-6, 2930 |
| 82. | ORGANO-TIN COMPOUNDS | 2931.00 |
| 83. | ORGANS (ANIMAL) | |
| dried, for organotherapeutic use | 3001.10 |
| extracts of, for organotherapeutic use | 3001.20 |
| 84. | ORGANS (MUSICAL INSTRUMENTS) | |
| fairground | 9208.90 |
| mechanical street | 9208.90 |
| the sound of which must be amplified or is electrically produced | 9207.10 |
| 85. | ORIENTAL TOBACCO | 2401.10 |
| 86. | ORIGANUM | 0910.99 |
| 87. | ORNAMENTAL ARTICLES | |
| of plastics | 3926.40 |
| 88. | ORNAMENTS | |
| of base metals | 8306.10 |
| 89. | ORRIS | |
| essential oils of | 3301.29 |
| 90. | ORTHANILIC ACID | 2921.42 |
| 91. | ORTHOCRESOL | 2707.99 |
| 92. | ORTHOPEDIC APPLIANCES | 9021.11-19 |
| 93. | ORTHOPHTHALIC ACID | |
| esters of | 2917.34 |
| 94. | OSCILLOGRAPHS | 9030.20 |
| 95. | OSCILLOMETERS | 9018.90 |
| 96. | OSCILLOSCOPES | 9030.20 |
| 97. | OSIER | 14-2, 1401.90, 46-1 |
| furniture of | 9403.80 |
| furniture parts of | 9403.90 |
| seat parts of | 9401.90 |
| seats of | 9401.50 |
| 98. | OSMIUM | |
| unwrought or powder | 7110.41-49 |
| 99. | OSSEIN | 0506.10 |
| 100. | OTTERS | |
| furskins, raw | 4301.80 |
| furskins, tanned or dressed | 4302.19-30 |
| 101. | OUTBOARD MOTORS | |
| sparkignition,internalcombustion | 8407.21 |
| 102. | OUTER SOLES | |
| for footwear | 64-4(b), 6406.20 |
| 103. | OUTPUT UNITS | |
| for automatic data processing machines | 8471.92-99 |
| 104. | OVENS | |
| cooking, other than household | 8419.81 |
| electric, industrial or laboratory | 8514.10-30 |
| electrothermic, of a kind used for domestic purposes | 8516.50, 8516.60 |
| microwave, other than household | 8419.81 |
| nonelectric | 8417.10-80 |
| nonelectric, bakery | 8417.20 |
| nonelectric, biscuit | 8417.20 |
| nonelectric, for heat treatment of ores, pyrites or metals | 8417.10 |
| 105. | OVERALLS, BIB AND BRACE | 6211.20 |
| men's or boys' | 6203.42 |
| men's or boys', knitted or crocheted | 6103.41-49 |
| women's or girls' | 6204.61-69 |
| women's or girls', knitted or crocheted | 6104.61-69 |
| 106. | OVERCOATS | |
| men's or boys' | 6201.11-19 |
| men's or boys', knitted or crocheted | 6101 |
| women's or girls' | 6202.11-19 |
| women's or girls', knitted or crocheted | 6102 |
| 107. | OVERHEAD TRAVELING CRANES | 8426.11 |
| 108. | OXACILLIN, SODIUM | 2941.10 |
| 109. | OXALIC ACID and its salts and esters | 2917.11 |
| 110. | OXAZEPAM(INN) | 2933.91 |
| 111. | OXAZOLAM(INN) | 2934.91 |
| 112. | OXIDATION INHIBITORS | 3811 |
| 113. | OXIDES | |
| magnesium | 2519 |
| micaceous iron | 2530.90 |
| 114. | OXIRANE | 2910.10 |
| 115. | OXYCODONE(INN) | 2939.11 |
| 116. | OXYGEN | 2804.40 |
| compounds of nonmetals | 2806-2811 |
| 117. | OXYGEN THERAPY APPARATUS | 9019.20 |
| 118. | OXYGEN-FUNCTION ORGANIC COMPOUNDS | 29-4 |
| 119. | OXYMORPHONE (INN) | 2939.11 |
| 120. | OXYQUINOLINE SULFATE | 2933.49 |
| 121. | OYSTERS | 0307.10 |
| prepared or preserved | 1605.90 |
| 122. | OZOKERITE | 2712.90 |
| 123. | OZONE THERAPY APPARATUS | 9019.20 |
| 124. | o-PARAQUAT DICHLORIDE | 2933.39 |
| 125. | o-PHENYLENEDIAMINE | 2921.51 |
| 126. | o-TOLIDINE | 2921.59 |
| 127. | o-TOLUENESULFONAMIDE | 2935.00 |
| 128. | o-XYLENE | 2902.41 |