| quaternary ammonium chloride combination | |
| CAS: 977127-82-4 Use(s): antimicrobial agents | |
| quaternium-14 | |
| CAS: 27479-28-3 EC: 248-486-5 Use(s): antimicrobial agents | |
| quercetin | |
| CAS: 117-39-5 EC: 204-187-1 Use(s): food additive and cosmetic agents | |
| iso | quercetin |
| CAS: 21637-25-2 EC: 244-488-5 FEMA: 4225 Use(s): antioxidants and preservatives | |
| quercus robur petraea extract | |
| CAS: 98143-70-5 EC: 308-636-3 Use(s): flavoring agents, food additives | |
| quercus robur wood | |
| CAS: 977089-90-9 Use(s): spices, other natural seasonings and flavorings | |
| quillaia | |
| CAS: 977002-27-9 Use(s): spices, other natural seasonings and flavorings | |
| quillaja saponaria bark extract | |
| CAS: 68990-67-0 EC: 273-620-4 FEMA: 2973 Use(s): emulsifiers and foaming agents | |
| quinoline yellow | |
| CAS: 8004-72-0 Use(s): coloring agents |