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Unshared electron pairs on pyridine nitrogen atoms accept protons and become alkaline.

The carbon and nitrogen atoms in the pyridine ring overlap each other with sp2 hybrid orbitals to form a σ bond, forming a planar six-membered ring.

Pyridine, an organic compound with the formula C5H5N, is a six-membered heterocyclic compound containing one nitrogen heteratom.

The preparation method is based on chloroethanol as raw material, ammoniated and cyclized.

Operation precautions: closed operation, local exhaust.

Isolate the contaminated area of leakage and restrict access.

Harmful combustion products: carbon monoxide, carbon dioxide, nitrogen oxide.

Immediately remove contaminated clothing and rinse with plenty of running water for at least 15 minutes. Seek medical attention.

Chemical properties of pyrroleyrrole and its methyl substituted homologues are present in bone tar. Colorless liquid. The boiling point is 130 ~ 131℃, the relative density is 0....