Charles O. Elder

940 Popular

4/22/20XX

Benzocaine 2%
Carbopol 934 Resin 2%
Alcohol, USP 90%
Purified Water, USP 6%
M & Ft. Topical Gel

Dispense: 4 ounces

Sig: apply to affected area on skin QID prn pain or itching

0

Norman Keyes

4-G Medical Arts Building

Additional Information:

• Base calculations on the preparation of 10% excess.

Total Volume Measurement: mL

Procedure:

1. Weigh g of benzocaine.
    
        
    
    
   
2. Weigh g of carbopol 934 resin.
    
        
    
    
   
3. Measure mL of alcohol (95%, USP) in a graduated conical.
    
        
    
    
   
4. Measure mL of purified water (USP) in a graduated conical.
    
        
    
    
   
5. Place all of the alcohol in an 8 ounce glass beaker and set it on a magnetic stirrer.
    
    
   
6. Add a mangetic stir bar and turn on the stirring until it is Click to Select Slowly Rapidly spinning and a vortex has formed. Do not use any heat.
    
    
   
7. Carfully add all of the benzocaine to the alcohol and allow it time to completely dissolve.
    
    
   
8. Place a small handheld sifter over a weigh boat and add all of the carbopol to the sifter
    
    
   
9. While continuing to stir the alcohol/benzocaine mixture, slowly sift the carbopol into the mixture at intervals. Allow the carbopol to Click to Select Completely Partially disperse within the alcohol between additions.
    
    
   
10. Add the purified water to the alcohol/benzocaine/carbopol mixture. Allow time to completely mix.
     
     
    
11. Turn off stirring and remove the stir bar.
     
     
    
12. Pour the volume to dispense into an appropriate dispensing container such as a squeeze bottle. Appropriately discard excess.
     
     
    
13. Cap the bottle.
     
     
    
14. Label & Dispense.