| 28.52      |            | Inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams | 
| 2852.10    |            | Chemically defined | 
| 2852.10    | 220        | (2) Chemical preparations for photographic uses (other than varnishes, glues, adhesives and similar preparations) ; unmixed products for photographic uses, put up in measured portions or put up for retail sale in a form ready for use | 
| 2852.10    | 291        | - Mercury carbides | 
| 2852.90    | 110        | (1) Polysulphides | 
| 28.53      |            | Phosphides, whether or not chemically defined, excluding ferrophosphorus; other inorganic compounds (including distilled or conductivity water and water of similar purity); liquid air (whether or not rare gases have been removed); compressed air; amalgams, other than amalgams of precious metals | 
| 2853.10    | 000        | Cyanogen chloride (chlorcyan) | 
| 2853.90    |            | I.- HYDROCARBONS AND THEIR HALOGENATED, SULPHONATED, NITRATED OR NITROSATED DERIVATIVES | 
| 29.01      |            | Acyclic hydrocarbons. | 
| 2901.21    | 000        | Ethylene | 
| 2901.22    | 000        | Propene (propylene) | 
| 2901.23    | 000        | Butene (butylene) and isomers thereof | 
| 29.02      |            | Cyclic hydrocarbons. | 
| 29.02      |            | Cyclanes, cyclenes and cycloterpenes : | 
| 2902.11    | 000        | Cyclohexane | 
| 2902.19    | 010        | 1 5-Ethylidene-2-norbornene | 
| 2902.30    |            | Xylenes : | 
| 2902.41    | 000        | o-Xylene | 
| 2902.42    | 000        | m-Xylene | 
| 2902.43    | 000        | p-Xylene | 
| 2902.44    | 000        | Mixed xylene isomers | 
| 2902.50    | 000        | Styrene | 
| 2902.60    | 000        | Ethylbenzene |