MALONIC ACID - (141-82-2)

Inleiding

naam: malonic acid; propanedioic acid*; methanedicarboxylic acid
* IUPAC
CAS nommer: 141-82-2
chemiese formule: C3H4O4 or CH2(COOH)2
molêre massa: 104.06146 g
massa Persent: C 34.625 %; H 3.8744 %; O 61.499 % 

klassifikasie

Gebruike / Function

• "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

Fisiese eienskappe

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

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

oplosbaarheid

kwalitatiewe:
onoplosbare:  3
oplosbare:  • • 3

binding

dubbelbindings: 2
trippelbindings: 0
Sigma Bonds: 10
Pi Bonds: 2
Totaal: 12
karboksielgroep Groepe: 2
hidroksielgroepe: 0

reaksies

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


Vir meer inligting

Bronne

(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