MALONIC ACID - (141-82-2)

introduction

prénom: malonic acid; propanedioic acid*; methanedicarboxylic acid
* IUPAC
Numero CAS: 141-82-2
Formule chimique: C3H4O4 or CH2(COOH)2
Masse molaire: 104.06146 g
Pourcentage de masse: C 34.625 %; H 3.8744 %; O 61.499 % 

Classification

Usages / Fonction

• "A dibasic acid formed by the oxidation of malic acid and active in the tricarboxylic acid cycle in carbohydrate metabolism. Its inhibition of succinic dehydrogenase is the classic example of competitive inhibition. Malonic acid is found in beets." 1

Propriétés physiques

Point de fusion:*
136°C 2 = 409.15 K = 276.8°F
135°C †3 = 408.15 K = 275°F

Densité (g/cm3):
1.619 at 10°C 3
* - 1 atm pressure
† - se décompose

Solubilité

Qualitatif:
insoluble:  3
soluble:  • • 3

Bonding

Obligations doubles: 2
Obligations Triple: 0
Obligations Sigma: 10
Obligations Pi: 2
Total: 12
carboxyl Groupes: 2
Les groupes hydroxylés: 0

Réactions

Chloracetc acid as a starting compound for the preparation of malonic acid.: 4


Pour plus d'informations

Sources

(1) - Taber's Cyclopedic Medical Dictionary, 18th ed.; F. A. David Company: Philadelphia, PA, 1997; p 22.
(2) - Estok, George K. Organic Chemistry: A Short Text; W.B. Saunders: Philadelphia, 1959; p 138.
(3) - Lide, David R. CRC Handbook of Chemistry and Physics, 83rd ed.; CRC Press: Boca Raton, FL, 2002; p 3-271.
(4) - Nathan Weiner. "Malonic acid". Org. Synth.; Coll. Vol. 2, p. 376