quaternary ammonium chloride combination
 CAS: 977127-82-4
Use(s): antimicrobial agents
 quaternium-14
 CAS: 27479-28-3
Use(s): antimicrobial agents
 quercetin
 CAS: 117-39-5
Use(s): food additive and cosmetic agents
isoquercetin
 CAS: 21637-25-2 FEMA: 4225
Use(s): antioxidants and preservatives
 quercus robur petraea extract
 CAS: 98143-70-5
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 FEMA: 2973
Use(s): emulsifiers and foaming agents
 quinoline yellow
 CAS: 8004-72-0
Use(s): coloring agents