The three major conservation equations for sodium oxalate:

c(OH-)=c(H+)+2c(H2C2O4)+c(HC2O4-)?

c(Na+)=2[c(C2O4 2-)+c(HC2O4-)+c(H2C2O4)]?

c(Na+)+c(H+)=2c(C2O4 2-)+c(HC2O4-)+c(OH-)?

Sodium oxalate (Na2C2O4) is the sodium salt of oxalic acid, a reducing agent, and is also often used as a bidentate ligand. It is a white crystalline powder, odorless and hygroscopic. Soluble in water, insoluble in ethanol. It decomposes into sodium carbonate and carbon monoxide when burned.

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Medicinal uses

Oxalate can form a complex with calcium ions in the blood that is difficult to dissociate, calcium ions are one of the substances needed in the process of coagulation, and the reduction of calcium ions in the blood, which causes the blood to coagulate, is impeded.

This product is only used for in vitro anticoagulation.

Use: To prevent blood coagulation during blood transfusion, add 10 ml of sodium oxalate injection for blood transfusion per 100 ml.

Precautions: When a large number of blood transfusions are made, an appropriate amount of calcium should be injected in order to prevent the hemostatic calcium from being too low.

Baidu Encyclopedia-Sodium Oxalate