why colour of paper gets yellow after time
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It eventually turns paper yellowbecause of oxidation. Paper is madefrom wood, which is made up mainly of white cellulose. Wood also has a lot of a dark substance in it called lignin, which ends up in the paper, too, along with the cellulose. The exposure of lignin to air and sunlight is what turns paper yellow
Answered by
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Explanation:
Lignin eventually turns paper yellow
because of oxidation. That is, the lignin
molecules, when exposed to oxygen in
the air, begin to change and become
less stable. The lignin will absorb more
light, giving off a darker color. ... After
only a few hours of sunlight and oxygen,
however, it will start to change color.
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