Formula:
| Ingredients | Qty given | Qty taken | Uses |
| Propylene glycol | 20g | Humectant | |
| Carbopol 934 | 1g | Gelling polymer | |
| Triethanolamine | q.s. pH 7 | pH adjuster | |
| Purified water | q.s. to 100 | Vehicle |
Procedure:
Carbopol was soaked in 3/4th quantity of water and keep aside for 30 mins.
Then propylene glycol was added and pH adjusted upto 7 with triethanolamine.
The gel was filled in collapsible aluminum tubes.
Theory:
Carbopol is a synthetic polyacrylic acid with ionizable carboxy groups. It swells when dispersed in water and hydration helps in uncoiling of polymeric chain.
In presence of alkali, carboxylate anions (COO‾) are generated on the backbone of polymeric chain which repel from each other and this repulsive forces further helps in extension of polymeric chains. Thus it gives higher viscosity in presence of alkaline pH 7-8
Category:
Non medicated gel
Labeling Direction:
For External Use Only. Keep in cool and dry place .Do not freeze.
Storage:
Store in a cool dry place.
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