used in liquid preparations to proivde acidic medium for product stability
acidifying agent
used in liquid preparations to provide alkaline medium for product stability
alkalizing agent
an agent capable of holding other molecules onto its surface by physical or chemical (chemisorption) means
adsorbent
agent responsible for developing the pressure within an aerosol container and expelling the product when the valve is opened
aerosol propellant
agent employed to displace air in a hermetically sealed container to enhance product stability
air displacement
used in liquid and semisolid preparations to prevent growth of fungi; effectiveness of parabens is usually enahnced by use in combination
antifungal preservative
used in liquid and semisolid preparations to prevent growth of microorganisms
antimicrobial preservative
used to prevent deterioration of preparations by oxidation
antioxidant
used to resist change in pH upon dilution or addition of acid or alkali
buffering agent
substance that forms stable water-soluble complexes (chelates) with metals; used in some liquid pharmaceuticals as stabilizers to complex heavy metals that might promote instability; in such use they're also called sequestering agents
chelating agents
used to impart color to liquid and solid preparations
colorant
used as filtering aid for its adsorbent qualities
clarifying agent
used to promote and maintain dispersion of finely subdivided particles of liquid in a vehicle in which it is immicscible; end product may be a liquid emulision or semisolid emulsion