Liquid Ammonia vs. Liquor Ammonia: Key Differences & Industrial Uses
Liquid ammonia is pure NH₃ chilled below –33 °C; liquor ammonia is that same gas dissolved in water, forming a 25 % solution often labelled “ammonia liquor.”
Plant operators and even suppliers confuse the two because drums simply say “ammonia” and the same pungent smell leaks from both. A frozen valve versus a sloshing jug: same gas, very different handling headaches.
Key Differences
Liquid ammonia: anhydrous, –33 °C, high pressure, used as refrigerant and hydrogen carrier. Liquor ammonia: aqueous, room temperature, mild pressure, sold in plastic carboys for cleaning or pH control.
Which One Should You Choose?
Need a refrigerant or want to crack hydrogen? Pick liquid ammonia. Cleaning floors or adjusting wastewater pH? Grab liquor ammonia—no cryogenic gear, no pressure vessel paperwork.
Examples and Daily Life
Supermarkets chill food with liquid ammonia loops; janitors dilute liquor ammonia to strip wax. Farmers inject liquor into soil, while rocket labs meter liquid for nitric acid synthesis.
Can I swap them in a recipe?
No—concentration and temperature specs differ, and the anhydrous form flashes off explosively in open air.
Why does liquor ammonia smell weaker?
Water traps much of the NH₃, so fewer fumes reach your nose compared to the pure, pressurised liquid.