| Class | Class Name |
|---|---|
| 1 | hydrogen peroxide for industrial purposes |
| 1 | hypochlorite of soda |
| 1 | hyposulfites |
| 1 | impregnation agents for concrete |
| 1 | in vitro diagnostic agents (except for medical and veterinary purposes) |
| 1 | industrial adhesives |
| 1 | industrial chemicals |
| 1 | industrial chemicals for maintenance and repair |
| 1 | industrial chemicals for use in the manufacture of paints |
| 1 | industrial chemicals for use in the manufacture of preservatives |
| 1 | industrial cleaning and finishing agents used in the manufacture of metal, plastic and glass |
| 1 | industrial coolants |
| 1 | industrial organic chemicals |
| 1 | inert gases other than for medical use |
| 1 | injection moulding compositions for electrical, electronic, automotive and industrial applications |
| 1 | inorganic chemicals |
| 1 | inorganic fertilizers |
| 1 | in-vitro diagnostic agents for scientific use and food analysis |
| 1 | iodic acid |
| 1 | iodine for chemical purposes |
| 1 | iodine for industrial purposes |
| 1 | iodised albumen |
| 1 | iodised salts |
| 1 | ion exchangers [chemicals] |
| 1 | iron salts |
| 1 | isinglass, other than for stationery, household or alimentary purposes |
| 1 | isotopes for industrial purposes |
| 1 | kainite |
| 1 | kaolin |
| 1 | ketones |
| 1 | kieselgur |
| 1 | krypton |
| 1 | lactic acid |
| 1 | lactose for industrial purposes |
| 1 | lactose for the food industry |
| 1 | lactose [raw material] |
| 1 | lamp black for industrial purposes |
| 1 | lamp black for use in industry |
| 1 | lanthanum |
| 1 | lead acetate |
| 1 | lead arsenate |
| 1 | lead oxide |
| 1 | leather glues |
| 1 | leather-dressing chemicals |
| 1 | leather-impregnating chemicals |
| 1 | leather-renovating chemicals |
| 1 | leather-waterproofing chemicals |
| 1 | lecithin for industrial purposes |
| 1 | lecithin for the food industry |
| 1 | lecithin [raw material] |
