Oxamic acid Property

Melting point:

207-210 °C (dec.) (lit.)

Boiling point:

165.08°C (rough estimate)

Density 

1.6193 (rough estimate)

refractive index 

1.4264 (estimate)

storage temp. 

2-8°C(protect from light)

solubility 

DMSO (Slightly), Methanol (Slightly), Water (Slightly)

form 

Crystalline Powder

pka

1.60±0.20(Predicted)

color 

White

Water Solubility 

Soluble in water 108 mg/mL.

Merck 

14,6917

BRN 

1743294

InChI

InChI=1S/C2H3NO3/c3-1(4)2(5)6/h(H2,3,4)(H,5,6)

InChIKey

SOWBFZRMHSNYGE-UHFFFAOYSA-N

SMILES

C(O)(=O)C(N)=O

CAS DataBase Reference

471-47-6(CAS DataBase Reference)

EPA Substance Registry System

Oxamic acid (471-47-6)

Safety

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36

WGK Germany 

3

TSCA 

Yes

HS Code 

29241990

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

Oxamic acid Chemical Properties,Usage,Production

Description

Oxamic acids also known to as oxalic acid monoamides have emerged as potent precursors for the generation of the carbamoyl radical. Oxamic acids can easily undergo decarboxylation through a single electron oxidation resulting in the generation of the reactive carbamoyl radical, which can then engage in diverse radical reactions or undergo a second single electron oxidation as originally unveiled by Minisci. Oxamic acids are thus versatile intermediates for the synthesis of nitrogen-containing organic molecules[1]. The oxidative decarboxylation of oxamic acids can be mediated through thermal, photochemical, electrochemical or photoelectrochemical means, generating carbamoyl radicals, which may further add to unsaturated systems to provide a broad range of important amides. Oxidative decarboxylation of oxamic acids also offers a straightforward entry for the preparation of urethanes, ureas, and thioureas.

Chemical Properties

Oxamic acid is a white, water-soluble solid. It is the monoamide ofoxalic acid. It can react with metal carbonates to form oxamate. Oxamic acid inhibits lactate dehydrogenase A.

Uses

Oxamic acid is an ozone oxidation product and is used in the synthesis of hydroxybenzimidazoles preparation as potential anti tumor agents targeting human lactate dehydrogenase A.This compound is suitable for lactate dehydrogenase (LDH) related research.

Application

Oxamic acid (OA) has applications in polymer chemistry. It increases the water solubility of certain polymers, including polyester,epoxide, and acrylic upon binding with them. Oxamic acid can be used as a reactant to prepare 6-phenanthridinecarboxamide by direct C-H carbamoylation reaction using ammonium persulfate in DMSO. It can also be used as an organic ligand to prepare functionalized metal oxide nanoparticles for various biological applications. OA along with p-aminobenzoic acid is used to functionalize Au nanoparticles for the development of a sensor to detect Fe3+ ions by the calorimetric method.

Definition

ChEBI: Oxamic acid is a dicarboxylic acid monoamide resulting from the formal condensation of one of the carboxy groups of oxalic acid with ammonia. It has a role as an Escherichia coli metabolite. It is a conjugate acid of an oxamate.

References

[1] Ikechukwu Martin Ogbu . “Oxamic acids: useful precursors of carbamoyl radicals.” Chemical Communications 58 55 (2022): Pages 7593-7607.