Oxalic Acid is an organic compound with the formula H2C2O4 (also written as HOOCCOOH). It is a colorless crystalline solid that forms a colorless solution in water. It is classified as a dicarboxylic acid. In terms of acid strength, it is much stronger than acetic acid. Oxalic acid is a reducing agent and its conjugate base, known as oxalate (C2O42−), is a chelating agent for metal cations. Typically, oxalic acid occurs as the dihydrate with the formula H2C2O4·2H2O. Excessive ingestion of oxalic acid or prolonged skin contact can be dangerous.
Oxalic acid is mainly manufactured by the oxidation of carbohydrates or glucose using nitric acid or air in the presence of vanadium pentoxide. A variety of precursors can be used including glycolic acid and ethylene glycol. A newer method entails oxidative carbonylation of alcohols to give the diesters of oxalic acid.
Source: Wikipedia
Oxalic Acid
Chromatogram(s) using Benson Polymeric Columns
Part No.:
Eluent:
Flow Rate:
Detection:
Temperature:
Sample Size:
Column Size:
Resin Type:
0.10% H3PO4
0.5 ml/min
UV 210nm
Ambient
20 ul, 30 mg/ml
300 x 7.8 mm
8% H
2 – Citric Acid
3 – Tartaric Acid
4 – Malic Acid
5 – Succinic Acid
6 – Formic Acid
7 – Acetic Acid
8 – Fumaric Acid
Part No.:
Eluent:
Flow Rate:
Detection:
Temperature:
Sample Size:
Column Size:
Resin Type:
0.003 N H2SO4
0.5 ml/min
Conductivity
Ambient
20 ul, 30 mg/ml
300 x 7.8 mm
8% H
2 – Maleic Acid
3 – Malic Acid
4 – Succinic Acid
5 – Formic Acid
6 – Acetic Acid
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