China Western Medicine, Ketoconazole Cream, Find details about China Ketoconazole Cream, Western Medicine from Western Medicine, Ketoconazole Cream - Anhui Medipharm Co., Ltd. Sign In Join Free
To answer the question, pure ammonia has a density of ~0.7-0.9 g/L, depending on temperature. The density of air is ~1.2 g/L, again depending on temperature and pressure. So, yes, ammonia gas is lighter than air in terms of density. 3 people found this useful.
1 Nitrogen is far more abundant in air than argon (79 percent of air is nitrogen, compared to 0.9 percent for argon).  Because there is less argon in air, it is about four times more expensive than nitrogen.