Oxobutanedioic acid Property

Melting point:

161 °C (dec.)(lit.)

Boiling point:

163.94°C (rough estimate)

Density 

1.3067 (rough estimate)

vapor pressure 

0.003Pa at 20℃

refractive index 

1.4000 (estimate)

Flash point:

88°C

storage temp. 

-20°C

solubility 

H₂O: 100 mg/mL

form 

powder

pka

2.22(at 25℃)

color 

White to off-white

PH

3.05(1 mM solution);2.29(10 mM solution);1.68(100 mM solution)

Water Solubility 

soluble

Merck 

14,6909

BRN 

1705475

Stability:

Stable. Incompatible with strong oxidizing agents. Keep refrigerated.

LogP

-1.04 at 20℃

CAS DataBase Reference

328-42-7(CAS DataBase Reference)

NIST Chemistry Reference

Oxalacetic acid(328-42-7)

EPA Substance Registry System

Oxalacetic acetic (328-42-7)

Safety

Hazard Codes 

C

Risk Statements 

34

Safety Statements 

26-36/37/39-45

RIDADR 

UN 3261 8/PG 2

WGK Germany 

3

TSCA 

Yes

HazardClass 

8

PackingGroup 

II

HS Code 

29183000

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H319Causes serious eye irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

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

P337+P313IF eye irritation persists: Get medical advice/attention.

Oxobutanedioic acid Chemical Properties,Usage,Production

Description

Oxaloacetic acid is an α-keto acid and a key component of cellular metabolism in its conjugate base form, oxaloacetate. Oxaloacetate reacts with acetyl-coenzyme A (acetyl-CoA; ) and water to form citrate in the first step of the citric acid cycle and is regenerated by oxidation of L-malate in the final step. It is an intermediate in gluconeogenesis that is formed in mitochondria via carboxylation of pyruvate and subsequently decarboxylated and phosphorylated to form phosphoenolpyruvate. It can be converted to aspartate via addition of an amino group from glutamate. Oxaloacetate (30 μmol/min per 100 g for 30 minutes, i.v.) reduces blood glutamate levels, severity of neurological dysfunction, and brain edema in a rat model of closed head injury.

Chemical Properties

off-white crystals

Uses

A four carbon dicarboxylic acid that is an intermediate in the citric acid cycle and glucogenesis. It has been shown to inhibit succinate dehydrogenase.

Uses

Use as a TCA (Krebs cycle) intermediate supplement in hybridoma cell culture applications. Enhances hybridoma growth and productivity.

Uses

Oxaloacetic acid is a substrate for malate dehydrogenase and oxaloacetate decarboxylase. It is an inhibitor of succinic dehydrogenase. It is an intermediate in the citric acid cycle and glucogenesis.

Definition

ChEBI: An oxodicarboxylic acid that is succinic acid bearing a single oxo group.

General Description

Oxaloacetic acid is a dicarboxylic acid. It is an intermediate in the citric acid cycle. It is highly soluble in water and is present ubiquitously. It is produced in the mitochondria by the action of pyruvate carboxylase on pyruvate. Breakdown products of oxaloacetate includes malate, pyruvate and aspartic acid.

Flammability and Explosibility

Not classified

Biological Activity

Oxalacetic acid (Oxaloacetic acid, 2-Oxosuccinic acid, Ketosuccinic acid) is an intermediate of the citric acid cycle, where it reacts with acetyl-CoA to form citrate, catalysed by citrate synthase. It is also involved in gluconeogenesis, urea cycle, glyoxylate cycle, amino acid synthesis, and fatty acid synthesis. Oxaloacetate is also a potent inhibitor of Complex II.

Biochem/physiol Actions

Oxaloacetic acid being an intermediate in the tri carboxylic cycle is central to metabolism. It is part of gluconeogenesis pathway. Mutation in pyruvate carboxylase leads to decreased production of oxaloacetate. It inhibits succinate dehydrogenase and is a key regulator of mitochondrial metabolism.

Purification Methods

Crystallise it from boiling EtOAc, or from hot Me2CO/hot *C6H6. [Beilstein 3 IV 1808.]