Nitrogen

High-purity nitrogen is used as protective gas and carrier gas in the manufacture of integrated circuits, semiconductors and electric vacuum devices. In processes such as epitaxy, lithography, cleaning and evaporation, high-purity nitrogen is used as a gas for replacement, drying, storage and transportation. In aerospace technology, liquid hydrogen filling systems must first be replaced with high-purity nitrogen and then with high-purity helium.

Nitrogen generally has three forms: solid, liquid, and gas.

Nitrogen, the chemical formula is N2, the molar mass of the nitrogen atom is 14g/mol, the relative molecular weight is 28, and the nitrogen percentage in atmosphere is 78%.

No. Nitrogen is chemically inactive, and can only react with hydrogen to form ammonia under high temperature, high pressure and catalyst conditions.

Nitrogen poisoning is a type of poisoning symptom caused by nitrogen. Nitrogen itself is non-toxic, but when the nitrogen content in the air is greater than 84% and the oxygen is less than 16%, it can lead to hypoxia asphyxiation. Patients may experience dizziness, chest tightness, rapid heart rate, shortness of breath, unconsciousness, or even coma, convulsions and other symptoms. Extremely high concentrations of nitrogen can cause sudden death.