| 2846.90    | 220        | - Lanthanum oxide | 
| 2846.90    | 290        | - Other | 
| 28.47      |            |  | 
| 2847.00    | 000        | Hydrogen peroxide, whether or not solidified with urea | 
| 28.49      |            | Carbides, whether or not chemically defined | 
| 2849.10    | 000        | Of calcium | 
| 2849.20    |            | Of silicon | 
| 2849.20    | 010        | - Sized grains | 
| 2849.20    | 090        | - Other | 
| 2849.90    |            | Other | 
| 2849.90    | 010        | - Boron carbide, niobium carbide and tantalum carbide | 
| 2849.90    | 090        | - Other | 
| 28.50      |            |  | 
| 2850.00    | 000        | Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 28.49 | 
| 28.52      |            | Inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams | 
| 2852.10    |            | Chemically defined | 
| 2852.10    | 100        | 1 Certified reference materials | 
| 2852.10    |            | 2 Inorganic compounds and articles thereof: | 
| 2852.10    | 210        | (1) Sulphates | 
| 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    |            | (3) Other | 
| 2852.10    | 291        | - Mercury carbides | 
| 2852.10    | 299        | - Other |