Oxalic acid, anhydrous, 99%+

About Oxalic acid, anhydrous, 99%+

Oxalic acid is a synthetic reagent carrying the CAS registry number 144-62-7, specified at ≥99% purity. With the molecular formula C2H2O4, it has a molar mass of 90.03 g/mol. It is also known as ethanedioic acid or Aktisal.

In its supplied form it is colourless to white powder or crystals. Literature values give a melting point of 189 °C (decomposition) and a density of 1.9 g/cm3 (20 °C). Store sealed in a dry, well-ventilated location away from incompatible materials. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

It is commonly used for organic synthesis, reaction development and medicinal chemistry. It is used across academic and industrial research.

Available in 50 g, 100 g, 250 g and 1 kg packs, Oxalic acid is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Organic synthesis
Reaction development
Medicinal chemistry

Industries

Specifications & identifiers

Chemical identifiers
Product name	Oxalic acid, anhydrous, 99%+
Catalogue No.	VQ-000914
CAS Number	144-62-7
IUPAC name	oxalic acid
Molecular formula	C₂H₂O₄
Molecular weight	90.03 g/mol
Exact mass	89.9953
Purity / assay	≥99%
HSN code	29171110
InChIKey	MUBZPKHOEPUJKR-UHFFFAOYSA-N
SMILES	C(=O)(C(=O)O)O
PubChem CID	971

Physical properties
Physical form	Crystalline
Appearance	Colourless to white powder or crystals
Melting point	189 °C (decomposition)
Density	1.9 g/cm3 (20 °C)
LogP (XLogP3)	-0.3
H-bond donors / acceptors	2 / 4
TPSA	74.6 Å²
UN number	UN 3261
Synonyms	ethanedioic acid, Aktisal, Aquisal, Oxiric acid, Kyselina stavelova, Acidum oxalicum, Acide oxalique, Acido ossalico, Ethanedionic acid, Ethane-1,2-dioic acid, Oxalic acid, anhydrous, Acid, Oxalic

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H312Harmful in contact with skin

Precautionary statements: P264, P270, P280, P301 + P317, P302 + P352, P317, P321, P330, P362 + P364, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Oxalic acid, anhydrous, 99%+?

The CAS Registry Number of Oxalic acid, anhydrous, 99%+ is 144-62-7. It is also known as ethanedioic acid, Aktisal, Aquisal.

What is the molecular formula and molecular weight of Oxalic acid, anhydrous, 99%+?

Oxalic acid, anhydrous, 99%+ has the molecular formula C2H2O4 and a molecular weight of 90.03 g/mol. Its IUPAC name is oxalic acid.

Which grade and pack sizes of Oxalic acid, anhydrous, 99%+ can I order?

We supply Oxalic acid, anhydrous, 99%+ in (≥99%) grade, in 50 g, 100 g, 250 g, 1 kg, 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Oxalic acid, anhydrous, 99%+?

Yes. Every lot of Oxalic acid, anhydrous, 99%+ is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Oxalic acid, anhydrous, 99%+ be shipped internationally?

Yes. Oxalic acid, anhydrous, 99%+ is classified as hazardous (UN 3261), so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.