Assertion: pyridine | /r/HasProperty | colorless
Facets:
value: with a chemical formula
type: OTHER
value: to yellow liquid
type: OTHER
Source sentences:
text: Pyridine is colorless, but older or impure samples can appear yellow.
text: Pyridine is a heterocyclic compound which is colourless to yellow liquid with a chemical formula C 5 H 5 N.
text: Pyridine is a heterocyclic compound that is colorless fluid with a chemical formula C5H5N.
text: One of the bases that is recovered is pyridine, a colourless nitrogenous liquid that has a pungent odour and produces derivatives that are of pharmaceutical value.