
| Class | INS No. | E Number | Description | Restrictions on preparation | Used in[7] |
| I | 150a | E150a | Plain caramel, caustic caramel, spirit caramel | No ammonium or sulfite compounds can be used | Whiskey and other high proof alcohols |
| II | 150b | E150b | Caustic sulfite caramel | In the presence of sulfite compounds but no ammonium compounds can be used | Cognac, sherry and some vinegars |
| III | 150c | E150c | Ammonia caramel, baker's caramel, confectioner's caramel, beer caramel | In the presence of ammonium compounds but no sulfite compounds can be used | Beer, sauces, and confectionery |
| IV | 150d | E150d | Sulfite ammonia caramel, acid-proof caramel, soft-drink caramel | In the presence of both sulfite and ammonium compounds | Acidic environments such as soft drinks |
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