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Nan solisyon, papòt la deteksyon nan piridin se alantou 1-3 mmol·L-1 (79-237 mg · L-1). Lè ou gen yon baz, piridin ka itilize kòm yon reyaktif Karl Fischer. Sepandan, imidazol se anjeneral itilize kòm yon ranplasan piridin jan li (imidazol) gen yon odè Pleasant.
eng
In solutions, the detection threshold of pyridine is around 1–3 mmol·L−1 (79–237 mg·L−1). Being a base, pyridine may be utilized as a Karl Fischer reagent. However, imidazole is usually used as a substitute to pyridine as it (imidazole) has a pleasant odor.