Online azide gas detector

Online azide gas detector

Online azide gas detector

It can simultaneously have on-site detection concentration display, signal transmission ledLamp and relay alarm function. The working principle of a fixed azide gas detector is to convert the gas concentration detected on site into a corresponding standard signal, and then transmit the signal toPLCTheDCSUnified display, management, and control of upper level computers such as alarm control hosts. Fixed gas with displayThe physical examination instrument has an internal 1 A relay(Switching signal)）It can control equipment such as fans, sound and light alarms, solenoid valves, etc.

Hydrozidic acid is a colorless liquid with a pungent odor,Very stable to heat, but explodes upon impact, commonly used as an explosive. Hydrogen azide acidaqueous solutionMedium is stable, slightly in waterionizationIts acidity is similar toacetic acid， Ka=1.9 × 10-5, is a typeweak acid.

Azide acid detector

chemical property

Dilute solution hardly decomposes, but explosive decomposition occurs immediately upon impact: 2HN3→3N2↑+H2↑

The normal salt of azide acid is stable, but heavy metal salts still explode when impacted, producing nitrogen gas. Its alkali metal and alkaline earth metal salts only decompose and do not explode when heated. Its lithium salt is heated to generate lithium nitride.

molecular structure

Its molecular structure is shown in the figure:

In HN3In the molecule, the angle between two N-N bonds is 171 °, and the H-N bond is adjacent to

The angle between the N-N bonds near H is about 109 °, indicating that the first N atom near H is sp2 hybridized, the second N atom is sp hybridized, and the N atom at the end is not hybridized. The reason is that there is an delocalized π bond in the molecule. The N atoms connected to hydrogen give one electron, the second N atom gives two electrons, and the third N atom gives one electron, forming a large π bond with three centers and four electrons. HN3The average oxidation number of N atoms is -1/3. N3-Ion is a halide like ion with chemical properties similar to halide ions, such as AgN3It is also insoluble in water.