| Code | Description |
| k13 | Jute |
| k20 | Sheep wool (treated) |
| k74 | Silk |
| k75 | Isocyanate TDI |
| k76 | Isocyanate MDI |
| k77 | Isocyanate HDI |
| k78 | Ethylene oxide |
| k79 | Phthalic anhydride |
| k80 | Formaldehyde |
| k81 | Ficus benjamina |
| k82 | Latex |
| k83 | Cotton seed |
| k84 | Sunflower seed |
| k85 | Chloramine T-HSA |
| k86 | Trimellitic anhydride |
| k87b | Alpha-amylase (barley malt) |
| k91 | Henna |
| k201 | Papain |
| k202 | Bromelain |
| k203 | Phospholipase |
| k208 | Lysozyme |
| k300 | Benzoic acid |
| k301 | Sorbic acid |