Malonic acid is water-soluble

Malonic acid CH2(COOH)2


White, crystalline powder

Beet juice
molar mass 104.062 g / mol

AGW not specified
density 1.619 g / cm3   
decomposition +135 ° C
Water solubility 
Conc. At 20 ° C 1400 g / l
Flash point +172 ° C
GHS 05
GHS 07
Hazard classes + category   

Acute toxicity oral 4
Serious eye damage 1
HP rates (see also note)  
H 302,318
P 280.1-3, 305 + 351 + 338
disposal G 3
Print a labelGerman designation 
Synonyms (German)
English designation 
CAS 141-82-2
Malonic acid
Propanedioic acid
Malonic acid
Propanedioic acid
Malonic acid forms colorless and odorless crystals. Finely divided, these appear white. They are very well soluble in water and readily soluble in ethyl alcohol or diethyl ether. Above 135 ° C, malonic acid decomposes into acetic acid and carbon dioxide. This decomposition takes place even in aqueous solution from 70 ° C.


Malonic acid or propanedioic acid is a dicarboxylic acid, its salts are called malonates. Malonic acid is formed during the oxidation of malic acid. Malonic acid owes its name to this discovery in 1858. The Latin name for the genus of plants is apples malum. Today, malonic acid is produced from the potassium salt of monochloroacetic acid, which is first converted to cyanoacetic acid with potassium cyanide. The malonic acid is then produced by hydrolysis of this intermediate product.
Malonic acid is used in organic syntheses for the production of sorbic acid or barbituric acid, for example. In chemical demonstration experiments it is needed for oscillation reactions, for example in the Belousov-Zhabotinsky reaction.