Assertion: aniline | /r/HasProperty | colourless
Facets:
value: to brown, oily liquid
type: OTHER
Source sentences:
text: Aniline is colourless, it slowly oxidizes and resinifies in air, giving a red-brown tint to aged samples.
text: Aniline is a colourless to brown, oily liquid which darkens on exposure to air and light.