SAS 6 Flashcards
What are the uses of Semi-solids?
- Vehicle for topically applied drugs
- Emollient
- Protective of occlusive dressing on the skin
this is widely used substance in semisolids besides water
Petrolatum and mineral oil
is a complex mixture of semisolids containing hydrocarbon aliphatic, cycle, saturated, unsaturated branch, and unbranched substances in varying proportions
Hydrocarbons
is obtained from petroleum acid and is preferred for those that have lower viscosity.
Mineral oil
is employed to increase the viscosity of mineral oil to prevent separation from an ointment
Hydrocarbon wax
are used in water removable creams as an emulsifier to develop a certain consistency in the cream
Stearic acid
are used in creams as AUXILLIARY emulsifiers and emollients.
Stearyl alcohol and cetyl alcohol
is the most commonly used in ointment vehicles
Petrolatum
What are the recognized vehicles for semisolids?
Absorption bases
hydrocarbon bases
water-soluble bases
water-removable bases
An oil in water emulsion and that upon application and rubbing in the skin, it vanishes.
Water-removable bases
are hydrophilic mixtures formed by the addition of substance miscible with hydrocarbons and possessing polar groups such as SO4, sulfonate, carboxyl hydroxyl, or an ether linage
Absorption base
These are prepared from mixtures of high and low molecular weights of polyethylene glycol
Water-soluble base
Water soluble base with low molecular weight are _______, with moderately higher molecules are unctuous, and with high molecular weights are _______.
Water soluble base with low molecular weight are LIQUID , with moderately higher molecules are unctuous, and with high molecular weights are SOLID.
Water soluble bases are also known as
greaseless ointment bases
Anhydrous ointments are manufactured by the _______ _______.
fusion method
what are the three ways of mixing phases in emulsion?
Simultaneous blending of the phases
external
dispersed phases
This type of mixing phases is good for large batch operation
Simultaneous blending of the phases
This type of mixing phases is useful for emulsion system with a low dispersed phase
external
This type of mixing phase is useful for many emulsion system
dispersed phase
_________ may be used in ophthalmic preparation against bacterial or fungal contamination.
Boric acid
Provide 2 shapes in rectal suppository
Torpedo
bullet
Provide 3 shapes in vaginal suppository
Ovoid
Cone
Globular
Provide 1 shape in urethal
Pencil-like
synonym of vaginal suppositories
pessaries
synonym of urethral suppositories
bougies