POTASSIUM OXALATE Definition & Meaning

potassium oxalate

Chemistry.

a colorless, crystalline, water-soluble, poisonous solid, K 2 C 2 O 4 ⋅H 2 O, used chiefly as a bleaching agent and in medical tests as an anticoagulant.

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On fusion with solid potash at 250� C. it completely decomposes, giving potassium oxalate and hydrogen, C2H6O2 + 2KHO = K2C2O4 + 4H2.

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With fused potash it forms potassium oxalate and acetate.

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Its principle is that a solution of ferrous oxalate in neutral potassium oxalate is effective as a developer.

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Uses.—The part of the plant used in medicine is the leaf which is acid by virtue of the potassium oxalate which it contains.

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In fact the salt of sorrel in the leaves contains a large quantity of oxalic acid mixed with potassium oxalate.

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