Compound Benzoic acid ointment BP

(Whitfield’s Ointment)

Aim: Prepare and submit10g of compound benzoic acid ointment B.P.

Definition:

Benzoic acid contains not less than 99.0 percent and not more than the

equivalent of 100.5 percent of benzenecarboxylic acid.

S.N. Ingredients QTY. FOR 100 g QTY. FOR ………..

1

2

3

Benzoic acid

Salicylic acid

Emulsifying ointment

3g

6g

91g

Procedure:

Pass the medicaments through sieve number 180 using a stainless steel type for

the salicylic acid. Mix the required amounts lightly on a tile, levigate with a little base

until smooth and dilute gradually.

Use: Fungicidal

Date: ……………Exp. No.

Cold Cream

Definition: Cold cream is an emulsion, which when applied on the skin, slow

evaporation of water causes a pleasant cooling sensation and hence the cream given

the name ‘Cold Cream’.

They are generally prepared by emulsification of oil and water. Cold creams are

O/W type emulsion but after application on the skin, sufficient water evaporates to

permit phase inversion to W/O type.

Prepare and submit 10g of cold cream

Procedure:

Melt the bees wax in a china dish and add liquid paraffin to it. Heat it until

temperature rises to 700C. Dissolve the borax in a calculated amount of water and

increase the temperature of aqueous solution to 700C. Add aqueous part to the oil part

and stir continuously until a creamy emulsion is formed, cool it slowly and add perfume

at room temperature and dispense.

Use: Protective and emollient.

Storage:To be stored in a well-closed container and kept in a cool place.

S.N. FORMULA QTY. FOR 100 g QTY. FOR ………..

1

2

3

4

5

White bees Wax

Liquid paraffin

Borax

Perfume

Purified water

10g

30g

0.5g

qs

9.5ml

Date: ……………Exp. No.

Vanishing Cream

Definition: These are oil-in-water type emulsions which when applied to the skin leaves

an almost invisible layer on it. Hence they are called “Vanishing Creams”.

These creams can be quickly washed off with water due to presence of O/w

emulsifiers. Vanishing creams are prepared by emulsification of stearic acid and water

by means of alkalies such as sodium hydroxide, potassium hydroxide, borax,

triethanolamine, etc. The main ingredient in Vanishing creams is stearic acid, which give

a pearly white shining appearance to the cream, which on application gives a thin white

film of free Stearic acid.

Prepare and submit 10g of Vanishing Cream

S.N. Ingredients QTY. FOR 100 g QTY. FOR ………..

1

2

3

4

6

Stearic acid

Potassium hydroxide

Glycerol

Lavender oil

Purified water

18g

1g

5g

qs

76ml

Procedure: Stearic acid is melted over a water bath and maintains the temperature at

700C. Dissolve potassium hydroxide is required quantity of water and it is heated to

700C. The temperature of aqueous solution and stearic acid are maintaining the same.

Add the oil part to the aqueous part continue the stirring until to form a cream then it is

cooled and the perfume is added with stirring.

Principle: Stearic acid acts as base, Pot. Hydroxide reacts with free fatty acid present in

stearic acid to form soap, which acts as an emulgent. Glycerin acts as an emollient and

anti-drying agent and water acts as Vehicle.

Storage: It is stored in a well-closed container.

Date: ……………Exp. No.

Uses: It is used as an emollient and protective. It is applied on the face before applying

face powder so that the face powder will remain longer time.