MALONIC ACID - (141-82-2)

Einführung

Name: malonic acid; propanedioic acid*; methanedicarboxylic acid
* IUPAC
CAS-Nummer: 141-82-2
Chemische Formel: C3H4O4 or CH2(COOH)2
Molmasse: 104.06146 g
Massenprozent: C 34.625 %; H 3.8744 %; O 61.499 % 

Einstufung

Verwendung / Funktion

• "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

Physikalische Eigenschaften

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

Dichte (g/cm3):
1.619 at 10°C 3
* - 1 atm pressure
† - zersetzt

Löslichkeit

qualitativ:
unlöslich:  3
löslich:  • • 3

Kleben

Doppelbindungen: 2
Dreifachbindungen: 0
Sigma Bonds: 10
Pi Bonds: 2
Gesamt: 12
Carboxygruppen: 2
HYDROXYLGRUPPEN: 0

Die Reaktionen

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


Für mehr Informationen

Quellen

(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