Pure Laboratory Grade Oxalic acid can react violently with things like alkali metals. It is also sensitive to heat.
Oxalic acid has numerous chemical and physical properties:
It's a powder or granular solid at room temperature
Its crystals can have a pyramidal shape
Oxalic acid chemically showing colourful oxidation-reduction reaction occurs when potassium permanganate is mixed with oxalic acid. The reaction turns the purple potassium permanganate into a light brown colour.
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