Skip to Content
MilliporeSigma
All Photos(1)

Key Documents

8.16144

Sigma-Aldrich

Oxalic acid

anhydrous for synthesis

Synonym(s):

Oxalic acid, Ethanedioic acid dihydrate

Sign Into View Organizational & Contract Pricing

Select a Size

50 G
$64.20
250 G
$202.00

$64.20


Estimated to ship onMay 10, 2025


Request a Bulk Order

Select a Size

Change View
50 G
$64.20
250 G
$202.00

About This Item

Empirical Formula (Hill Notation):
C2H2O4
CAS Number:
Molecular Weight:
90.03
MDL number:
UNSPSC Code:
12352106
EC Index Number:
205-634-3
NACRES:
NA.22

$64.20


Estimated to ship onMay 10, 2025


Request a Bulk Order

vapor pressure

<1 Pa ( 25 °C)

Quality Level

assay

≥99% (manganometric)

form

solid

potency

375 mg/kg LD50, oral (Rat)

pH

1 (20 °C, 100 g/L in H2O)

mp

189 °C (decomposition)

solubility

108 g/L

density

1.9 g/cm3 at 20 °C

bulk density

750 kg/m3

storage temp.

2-30°C

SMILES string

[O+H2]C(=O)C(=O)[O-]

InChI

1S/C2H2O4/c3-1(4)2(5)6/h(H,3,4)(H,5,6)

InChI key

MUBZPKHOEPUJKR-UHFFFAOYSA-N

Application

  • Glycerol conversion into added-value products on Ni-Cu based catalysts: Discusses the role of oxalic acid among various catalysts in glycerol conversion to value-added products (JLC Fajín, MNDS Cordeiro, 2024).
  • Synthesis, Crystal Structure, Hirshfeld Surface and Computational Analysis of Bis-Oxalate Ethanol Solvate: Explores the crystal structure and properties of a new oxalate compound (P Solo, M Arockia doss, 2024).
  • Synergistic Enhancement of Barrier Performance in Silanized Modified Hemicellulose/PVA Composite Films through Oxalic Acid Crosslinking: Discusses the enhancement of material properties through oxalic acid treatment (J Wang et al., 2024).

pictograms

CorrosionExclamation mark

signalword

Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Questions

1–2 of 2 Questions  
  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

Reviews

No rating value

Active Filters

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service