(8) One formula for an O/W ointment base is as follows:
Calcium citrate
0.05 g
Sodium alginate
3.00 g
Methylparaben
0.20 g
Glycerin
45.00 g
Distilled water qs.ad
1000.00 g
How many milliliters of glycerin would be needed to prepare 500 g of the
above ointment base?
Ans: ________ ml
(9) How many grams of petrolatum would be required to make this
prescription?
Ans: __________ grams
(10) What is the specific gravity of a solution having a volume of 473
milliliters and weighing 500 grams?
Ans: __________ specific gravity
MD0802
2-8