Nomenclature
CAS number: 62-76-0
Ethanedioic acid sodium salt (1:2); oxalic acid disodium salt.
C
2Na
2O
4; mol wt 134.00.
C 17.93%, Na 34.31%, O 47.76%.
Na
2C
2O
4.
Description and references
Crystal structure and X-ray studies: E. A.
Boldyreva et al., Z. Kristallogr. 221, 186 (2006). Thermal properties: B. Menczel et al., J. Chem. Thermodyn. 36, 41 (2004).
Properties
White, odorless, cryst powder. d30 2.888. Soly in water
(m): 0.210 at 0°, 0.270 at 25°. Insol in alcohol. The
aq soln is practically neutral. Dielectric constant, ε 6.1.Caution
Potential symptoms of overexposure
by ingestion are burning pain in throat, esophagus, stomach; vomiting;
weak, irregular pulse; hypotension, cardiovascular collapse; headache,
muscle cramps, tetany, convulsions, stupor, coma; kidney damage. See Clinical Toxicology of Commercial
Products, R. E. Gosselin et al., Eds. (Williams
& Wilkins, Baltimore, 5th ed., 1984) Section III, pp 326-328.Use
Finishing textiles, tanning and finishing leather;
for standardizing potassium permanganate soln. Titrimetry.