Date published: 2025-9-19

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Oxalic acid dihydrate (CAS 6153-56-6)

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Alternate Names:
Ethanedioic acid
Application:
Oxalic acid dihydrate is a diprotic reducing agent used as a buffer
CAS Number:
6153-56-6
Purity:
>98%
Molecular Weight:
126.07
Molecular Formula:
C2H2O42H2O
Supplemental Information:
This is classified as a Dangerous Good for transport and may be subject to additional shipping charges.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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Oxalic acid dihydrate is a reducing agent. Oxalic acid, also known as Ethanedioic acid is a diprotic acid, which means it can give away 2 protons (hydrogen ions) to a base. Oxalic acid dihydrate has been evaluated as a treatment for reducing populations of naturally occurring microorganisms. Used as a buffer in chromatographic separation, dechelation and deproteinization in tandem with acetonitrile and/or other solvents.


Oxalic acid dihydrate (CAS 6153-56-6) References

  1. Inhibitory effect of oxalic acid on bacterial spoilage of raw chilled chicken.  |  Anang, DM., et al. 2006. J Food Prot. 69: 1913-9. PMID: 16924917
  2. Oxalic acid: a prospective tool for reducing Varroa mite populations in package bees.  |  Aliano, NP. and Ellis, MD. 2009. Exp Appl Acarol. 48: 303-9. PMID: 19184581
  3. Effect of waters of crystallization on terahertz spectra: anhydrous oxalic acid and its dihydrate.  |  King, MD. and Korter, TM. 2010. J Phys Chem A. 114: 7127-38. PMID: 20536195
  4. Evidence of Polaron Excitations in Low Temperature Raman Spectra of Oxalic Acid Dihydrate.  |  Mohaček-Grošev, V., et al. 2016. J Phys Chem A. 120: 2789-96. PMID: 27093217
  5. Effects of Oxalic Acid on Apis mellifera (Hymenoptera: Apidae).  |  Rademacher, E., et al. 2017. Insects. 8: PMID: 28783129
  6. Mechanical properties of anhydrous oxalic acid and oxalic acid dihydrate.  |  Colmenero, F. 2019. Phys Chem Chem Phys. 21: 2673-2690. PMID: 30657500
  7. Analysis of the polarized IR reflectance spectra of the monoclinic α-oxalic acid dihydrate.  |  Ivanovski, V., et al. 2019. Spectrochim Acta A Mol Biomol Spectrosc. 218: 1-8. PMID: 30952025
  8. [2+2] Photodimerization of Stilbazoles Promoted by Oxalic Acid in Suspension.  |  Nguyen, TB., et al. 2020. Chemistry. 26: 4682-4689. PMID: 31944449
  9. Heat-Induced Dry Hydrolysis of Sodium Borohydride/Oxalic Acid Dihydrate Composite for Hydrogen Production.  |  Shin, S., et al. 2022. ACS Omega. 7: 979-986. PMID: 35036761
  10. Formation and structure evolution of starch nanoplatelets by deep eutectic solvent of choline chloride/oxalic acid dihydrate treatment.  |  Xiao, Q., et al. 2022. Carbohydr Polym. 282: 119105. PMID: 35123758
  11. Strong Hydrogen Bonds in Acetylenedicarboxylic Acid Dihydrate.  |  Novak, U., et al. 2022. Int J Mol Sci. 23: PMID: 35682843
  12. Supramolecular structure of microwave treated bamboo for production of lignin-containing nanocellulose by oxalic acid dihydrate.  |  Wang, Y., et al. 2023. Int J Biol Macromol. 230: 123251. PMID: 36639071
  13. Crystallization kinetics of oxalic acid dihydrate: nonisothermal desupersaturation of solutions.  |  Rodriguez-Hornedo, N. and Carstensen, JT. 1986. J Pharm Sci. 75: 552-8. PMID: 3735098

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Oxalic acid dihydrate, 100 g

sc-203171
100 g
$44.00

Oxalic acid dihydrate, 500 g

sc-203171A
500 g
$99.00

Oxalic acid dihydrate, 2.5 kg

sc-203171B
2.5 kg
$418.00