quaternium-15 surfactant and preservative molecule (formaldehyde releaser

quaternium15 quaternium hexamethylenetetramine chloroallyl chloride quaternary ammonium salt surfactant preservative formaldehyde releaser allergy allergen allergic contact skin sensitiser sensitizer sensitisation sensitization patch test dermatology dermatologist hydrogen carbon nitrogen chlorine molecule atoms atomic model molecular compound composition chemical chemistry bond structure formula circle ring line drawing skeletal flat icon stylized style