Itaconic Acid

Cas Number


Other Names

2-Methylenesuccinic acid

Methylenesuccinic acid

1-Propene-2-3-dicarboxylic acid

The formula



Itaconic acid, or methylenesuccinic acid, is an organic compound. This dicarboxylic acid is a white solid that is soluble in water, ethanol, and acetone. The name itaconic was devised as an anagram of aconitic. Historically, itaconic acid was obtained by the distillation of citric acid, but currently it is produced by fermentation.

Physical and Chemical Properties
Physical state and Appearance: White crystal Or Powder
Odor: Odorless
Molecular Weight: 130.1 g/mole
PH (1% soln/water): 1.5-2.0
Color: white crystals
Boiling Point °C: 268(sublimes)
Melting Point °C: 167-169
Specific Gravity: 1.573 (Water = 1)
Solubility: Solvents
Purity %: 99.6 min
Loss on Drying, %: 0.3 max
Residue on ignition, %: 0.01 max
Heavy metal (Pb), ug/g: 10 max
Fe, ug/g: 3 max
Cu, ug/g: 1 max
Mn, ug/g: 1 max
As, ug/g: 4 max
Sulfate, ug/g: 30 max
Chloride, ug/g: 10 max
Melting Point, °C: 165-168
Clarity (5% water solution): Cloudless
Clarity (20% DMSO): Cloudless

Unsaturated solid bond makes a conjugated system with carbonyl group. It is used in the field of:

1. Co-monomer to prepare acrylic fibers and rubbers, reinforced glass fiber, artificial diamonds and lens

2. Additive in fibers and ion exchange resins to increases abrasion, waterproofing, physical resistance, dying affinity and better duration

3. Water treatment system to prevent contamination by metallic alkali

4. As binder and sizing agent in non-weaving fibers, paper and concrete paint

The end applications of itaconic acid and its esters include in the field of co-polymerizations, plasticizers, lubricant