Preparation of Cetrimide Cream with Virtual Interactive Simulation
Table of Contents
Practical Significance
Cetrimide is an antimicrobial surfactant and is particularly beneficial for treating minor burns. It helps to soothe the affected area, reduce pain, and prevent infection, promoting faster healing. Through the experiment, the students will be able to learn the composition, preparation, evaluation, storage, use, direction and labelling requirements.
Relevant Theoretical Background
Cetrimide is a cationic hydrophilic surfactant; chemically it is a quaternary ammonium compound. It is used as an antiseptic in the treatment of superficial wounds, burns and minor skin infections. Cetostearyl alcohol is a non-ionic hydrophobic surfactant which acts as an emulsifying agent. It increases viscosity of the preparation. Liquid paraffin helps to increase emollient properties. Purified water acts as a vehicle.
Requirements
a. Apparatus: 100 ml beaker, glass rod, spatula, porcelain dish and water bath.
b. Equipment: Calibrated weighing balance.
c. Chemicals: Cetrimide, cetostearyl alcohol, liquid paraffin and purified water.
Formulation Table
Procedure
- a. Dissolve cetrimide in freshly boiled and cooled water (aqueous phase).
- b. Dissolve the cetostearyl alcohol in the liquid paraffin with the aid of gentle heat in a porcelaindish (oily phase) on a water bath.
- c. Add the warm aqueous phase to the warm oily phase and stir until cold. The cream can be homogenized in a mortar.
- d. Fill the cream in a suitable wide mouth container taking precautions not to touch the sides.
- e. Evaluate formulation as per evaluation parameters and note the observations.
- f. Transfer into a well-closed container, tap the bottle lightly to form a uniform layer at the bottom, attach a label and submit.
Use of Preparation
As an antiseptic.
Directions
Use as directed.
Instructions
For external use only.
Storage
Store in a well-closed container in a cool place
Result
__ml of Cetrimide Cream BP is prepared, evaluated and submitted in a ___________ container with special instructions as__________________________________________________.
Virtual Interactive Simulation
[embeddoc url=”https://teachntest.wordpress.com/wp-content/uploads/2025/07/574db-cetrimide-cream-1.ppsx”]Instructions:
Click “Start,” “Next,” or “End” to navigate between slides.
Follow the sequence order for the best experience.
Allow each animation to complete before moving to the next step.
The actual process may vary slightly from the steps above.
For any suggestions or corrections, please email pankajvalvi@gmail.com.
FAQ’s
a. Define and classify creams.
Definition:
Creams are semi-solid emulsions intended for external application, containing either water-in-oil (W/O) or oil-in-water (O/W) emulsions.
Classification:
Oily creams (W/O emulsions): Hydrophobic, usually anhydrous, absorb small amounts of water.Examples: Fluocinolone acetonide cream, Cold cream.
Aqueous creams (O/W emulsions): Hydrophilic, contain water-miscible bases.Examples: Moisturizing cream, Vanishing cream.
b. Write any four uses of creams.
Protect the skin (e.g., barrier creams).
Act as sunscreens.
Moisturize dry or damaged skin.
Serve as a vehicle for drugs like local anesthetics, anti-inflammatories, or antifungals.
c. Write advantages and disadvantages of creams.
Advantages:
Deliver drugs with low aqueous solubility.
Provide prolonged contact at the application site.
Easy to apply and spread.
Non-irritating and water-washable.
Disadvantages:
Thermodynamically unstable due to emulsions.
Risk of contamination due to water content.
Some may irritate the skin in sunlight.
Difficult to apply an exact quantity.
d. Describe the formulation of creams.
Vehicles: Commonly water as an aqueous base.
Bases: Medium for incorporating active ingredients (e.g., liquid paraffin, lanolin).
Emollients: Soften and soothe the skin (e.g., lanolin, mineral oil).
Preservatives: Prevent microbial degradation (e.g., methylparaben).
Antioxidants: Prevent oxidation (e.g., sodium metabisulfite).
Humectants: Retain moisture (e.g., glycerin, propylene glycol).
Coloring agents: Enhance appearance (e.g., saffron).
e. What is the use of Cetrimide cream B.P.?
Cetrimide Cream B.P. is an antiseptic used for cleaning wounds, treating cuts, burns, and skin infections.