Why is the liquid ammonia bottle cooled before opening the seal?

Liquid ammonia is highly volatile and can easily vaporize at room temperature. Cooling the bottle before opening the seal helps to reduce the pressure inside the bottle and minimize the amount of ammonia vapor that is released when the seal is broken. This can help prevent the ammonia from rapidly evaporating and potentially causing harm to the person opening the bottle or those nearby. Additionally, cooling the bottle can also help to reduce the risk of the ammonia bottle exploding due to the build-up of pressure inside.

Liquid ammonia is a hazardous chemical that can cause severe burns and respiratory irritation. Cooling the bottle before opening the seal helps to reduce the risk of these hazards by:

- Reducing the pressure: Cooling the bottle reduces the vapor pressure of the ammonia, which in turn reduces the pressure inside the bottle. This makes it less likely that the bottle will rupture when the seal is opened.
- Condensing the vapor: The cold temperature causes the ammonia vapor to condense into a liquid, which reduces the amount of vapor that is released when the seal is opened. This reduces the risk of inhalation and exposure to the ammonia vapor.
- Slowing down the evaporation: The cold temperature slows down the rate at which the ammonia evaporates, which gives the user more time to take precautions before the ammonia vapor is released.