Introduction
Name: malonic acid; propanedioic acid*; methanedicarboxylic acid
* IUPAC
CAS Number: 141-82-2
Molar Mass: 104.06146 g
Mass Percent: C 34.625 %; H 3.8744 %; O 61.499 %
Classification
Uses/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
Physical Properties
Melting Point:*
136°C 2 = 409.15 K = 276.8°F
135°C †3 = 408.15 K = 275°F
Density (g/cm3):
1.619 at 10°C 3
* - 1 atm pressure
† - decomposes
Solubility
Qualitative:
insoluble: 3
soluble: • • 3
Bonding
Double Bonds: 2
Triple Bonds: 0
Sigma Bonds: 10
Pi Bonds: 2
Total: 12
Carboxyl Groups: 2
Hydroxyl Groups: 0
Reactions
Chloracetc acid as a starting compound for the preparation of malonic acid.:
4
For More Information
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