Itaconic Acid | organic acid | organic salt
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    Home > News > Itaconic Acid understanding
    Itaconic Acid understanding - 2013-06-09 00:26:28
    Itaconic acid is a five carbon acid. It is the product of citric acid distillation is one of the three, the other two products were in citraconic acid and itaconic acid. The word is the word of itaconic translocation Aconitum Formation.

    Other names: methylene succinic acid, itaconic acid, aconitic acid decomposition, methylene succinic acid.

    Properties:
    Itaconic acid is a white crystalline with special smell, soluble in water, ethanol, acetone, slightly soluble in chloroform, benzene and ether. Non-volatile, can be sublimated under vacuum, thermal decomposition. Yi polymerization.

    Preparation:
    Biological method: carbohydrates as raw material, add a nitrogen source and inorganic salts by Aspergillus derived role.

    Chemical method:

    1, with citric acid as raw material, the catalyst was heated in the presence citraconic acid, and then heated to 220 degrees isomerization to give itaconic acid.

    2 to isocitrate, aconitic acid or aconitic anhydride as raw materials.

    3, with succinic anhydride or succinic acid diester as raw materials in thorium salt catalyzed reaction with formaldehyde citraconic acid, heating isomerization get itaconic acid.

    4, by the esterification of maleic anhydride, addition, sub-methylation and hydrolysis.

    Purpose:
    As chemical reagents, synthetic fiber, synthetic resin, monomer, a binder and so on.

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