the life of people can come into contact with the ammonia gas mainly comes from concrete admixture, used in the construction and interior decoration materials, such as furniture paint additives and brightener used mostly with ammonia, so what are the dangers of ammonia?
Ammonia is a colorless gas with a pungent odor.
Molecular formula NH3.
Molecular weight 17.03.
The explosion limit of the vapor and air mixture is 16 ~ 25%(the most easily ignited concentration is 17%).
Ammonia has 34% solubility in water at 20¡æ, 10% solubility in absolute ethanol and 16% solubility in methanol at 25¡æ. It is soluble in chloroform and diethyl ether. It is a good solvent for many elements and compounds.
The aqueous solution is alkaline, and the PH value of 0.1N aqueous solution is 11.1.
Liquid ammonia can erode certain plastics, rubbers and coatings.
In case of heat and open flame, it is difficult to ignite and the risk is low;
However, the mixture of ammonia and air reaching the above concentration range will burn and explode in the presence of open flame, if there is oil or other combustible substances, the risk is higher.
Reaction with sulfuric acid or other strong inorganic acid exothermic, the mixture can reach boiling.
Ammonia is inhaled into the body, a small part of which is neutralized by carbon dioxide, and the rest enters the blood, mainly combining with hemoglobin and destroying the oxygen function of the blood.
After inhaling a large amount of ammonia in the short term, tears, sore throat, cough, chest tightness, dyspnea, dizziness, vomiting, fatigue, etc.
If the inhalation of ammonia is too much, resulting in high ammonia concentration in the blood, it will cause cardiac arrest and respiratory arrest through the reflex effect of trigeminal nerve endings, endangering life.