| 3500 | ALBUMINOIDAL SUBSTANCES; MODIFIED STARCHES; GLUES; ENZYMES | |
| 3501 | Casein, caseinates and other casein derivatives; casein glues |  Ontological structure of 3501 |
| 3502 | Albumins (including concentrates of two or more whey proteins, containing by weight more than 80 % whey proteins, calculated on the dry matter), albuminates and other albumin derivatives | Ontological structure of 3502 |
| 3503 | Gelatin (including gelatin in rectangular (including square) sheets, whether or not surface-worked or coloured) and gelatin derivatives; isinglass; other glues of animal origin, excluding casein glues of heading 3501 | Ontological structure of 3503 |
| 3504 | Peptones and their derivatives; other protein substances and their derivatives, not elsewhere specified or included; hide powder, whether or not chromed | Ontological structure of 3504 |
| 3505 | Dextrins and other modified starches (for example, pregelatinised or esterified starches); glues based on starches, or on dextrins or other modified starches | Ontological structure of 3505 |
| 3506 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg | Ontological structure of 3506 |
| 3507 | Enzymes; prepared enzymes not elsewhere specified or included | Ontological structure of 3507 |