Properties of ammonia, properties of ammonia water, properties of liquid ammonia

I don’t know what LZ wants to express. I would also like to ask LZ to express his views or questions more clearly.: Ammonia is the name of a compound. Ammonia water is a product of chemical and physical reactions when this compound is mixed with water. Liquid ammonia is the characteristic state displayed by the compound ammonia when it reaches a certain pressure and temperature! Please ask LZ after you understand! :handshake

Although I don’t quite agree with the poor quality question you raised, I would like to express it again.: (1) Ammonia is a gas at room temperature, has a pungent odor, and is easily soluble in water (2) Ammonia water, as stated in (1), is the product of ammonia dissolved in water (3) Liquid ammonia, ammonia in a liquid state. There are two possibilities for causing this state. One is absolute low temperature (estimated to be more than 100 degrees below zero. You need to check the relevant data for details, but it is generally not used) ； The second is high pressure, which liquefies gaseous ammonia (the same principle as liquefied gas). If you still don't understand something, I suggest you check it out in the encyclopedia. You'll definitely be able to find it out.

This kind of question should be searched on Google first, and then the "Chemical Process Design Manual" or "Chemical Engineering Design Manual" should be searched. There is no need to post it rashly.

Ammonia is very soluble in water, and the water content in liquid ammonia is generally controlled at about 2%, because it is very costly and difficult to obtain 100% ammonia.

NH3 molecular weight 17.03, colorless gas with pungent odor; vapor pressure 506.62kPa (4.7℃); melting point -77.7℃; boiling point -33.5℃; solubility: Easily soluble in water, ethanol, ether; density: Relative density (water=1)0.82 (-79℃); relative density (air=1)0.6; stability: Stable; danger mark 6 (toxic gas); main use: Used as a refrigerant and a way to prepare ammonium salts and nitrogen fertilizers.: Inhaled. health hazards: Low concentrations of ammonia can irritate mucous membranes, while high concentrations can cause tissue dissolution and necrosis. acute poisoning: Mild cases may include tearing, sore throat, hoarseness, cough, and expectoration; congestion and edema in the conjunctiva, nasal mucosa, and pharynx; chest X-ray signs consistent with bronchitis or peribronchitis. In moderate poisoning, the above symptoms are aggravated, with dyspnea and cyanosis appearing; chest X-ray signs are consistent with pneumonia or interstitial pneumonia. In severe cases, toxic pulmonary edema or respiratory distress syndrome may occur. Patients may experience severe coughing, coughing up a large amount of pink foamy sputum, respiratory distress, delirium, coma, shock, etc. Laryngeal edema or bronchial mucosal necrosis and suffocation may occur. High concentrations of ammonia can cause reflex respiratory arrest. Liquid ammonia or high-concentration ammonia can cause eye burns; liquid ammonia can cause skin burns. toxicity: It is of low toxicity. acute toxicity: LD50350mg/kg (rat oral); LC501390mg/m3, 4 hours, (rat inhalation). irritating: rabbit eye: 100ppm, severe irritation. subacute chronic toxicity: In rats, 20 mg/m3, 24 hours/day for 84 days, or 5 to 6 hours/day for 7 months, will cause nervous system dysfunction and inhibition of blood cholinesterase activity. mutagenicity: Microbial mutagenicity: E. coli 1500ppm (3 hours). Cytogenetic analysis: Rats inhaled 19800µg/m3, 16 weeks.

I hope the newcomers in Haichuan can ask questions boldly. Even if they ask the wrong questions, it doesn’t matter.

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