5 Written questions
5 Matching questions
- Define: Levigation
- What is a tincture?
- Water soluble bases are made from this important compound:
- Lanolin is a (w/o or o/w) emulsion with ____% water.
- what is the difference between water-oil/oil-water emulsions?
- a Poly Ethylene Glycol (PEG)
- b Tincture is an alcoholic or hydroalcoholic solution of chemicals or soluble constituents of vegetable drugs.
Tinctures must be keep away from light and heat
- c water-oil emulsion with 25% water
- d Ans: the difference is the dispersed phase/continuous phase
dispersed phase comes first
Water-oil: dispersed phase is water.
Oil-water: dispersed phase is oil
- e Adding an insoluble substance to a powder while its wet is called levigation
5 Multiple choice questions
- It contains pyrogens which are microbial compounds increase body temperature.
- multiple OH groups in alcohols
sorbitol and glycerin
- wet gum= adding water to acacia
dry gum = adding oil to acacia
- water:oil:emulsifying agent (eg. acacia)
5 True/False questions
what is the bottle method of emulsification and what is it's ratio? → Its a variation of dry gum: oil:water:acacia
3;2;1 or 2:1;1
what are the four types of bases used to make ointment? → 1. water washable bases
2. Oleaginous/hydrocarbon/oil bases
which of the following types of water cannot be used to make parenteral & opthalmic solutions?
a) purified water
b) bacteristatic water → Ans: A do not use purified water for opthalmic solutions
Sorbic Acid and glycerin is an important component of? → Capsules
what is the use of emulsifying agents? → Opposite of osmosis using high pressure to move from region of high solvent concentration to region of low solvent concentration.