Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
Itaconic acid
1. Basic Information
Name: Itaconic acid
Alias: Methylenesuccinic acid, 2-Methylidenebutanedioic acid
CAS No.: 97-65-4
Molecular Formula: C5H6O4
Molecular Weight: 130.10
Category: Bio-based unsaturated dicarboxylic acid, polymer monomer, fine chemical raw material
2. Physical and Chemical Properties
Physical Properties
- Appearance: White crystalline powder
- Odor: Odorless, slight sour taste
- Solubility: Soluble in hot water, methanol, ethanol; slightly soluble in cold water, acetone; insoluble in benzene, petroleum ether
- Melting Range: 165–168 ℃
- Hygroscopy: Non-hygroscopic under normal humidity
- Aqueous property: Weakly acidic aqueous solution, two-stage dissociation of carboxyl groups
Chemical Properties
- Molecular structure: Contains one carbon-carbon double bond and two terminal carboxyl groups
- Addition polymerization: Double bond undergoes homopolymerization or copolymerization with styrene, acrylic monomers to produce water-soluble resins
- Esterification reaction: Reacts with alcohols to synthesize itaconic acid ester plasticizers
- Neutralization reaction: Reacts with alkalis to form soluble itaconate salts
- Thermal stability: Stable below 150 ℃; high temperature heating decarboxylates to form citraconic acid impurities
- Photostability: Slightly sensitive to long-term strong UV light, prone to slight yellowing
- Compatibility: Compatible with alcohols, esters, water-based resins; incompatible with strong oxidants, high-temperature concentrated alkali
3. Main Application Fields
1. Bio-Polymer Monomer (Core Application)
Synthesize polyitaconic acid, styrene-itaconic acid copolymer for water-based coatings, adhesive resin, superabsorbent polymer
2. Plasticizer Raw Material
Synthesize environment-friendly itaconate plasticizers to replace phthalate plasticizers for food contact plastics
3. Detergent & Water Treatment
Polyitaconate as scale inhibitor, dispersant for industrial circulating water system
4. Other Uses
- Biochemical fermentation raw material
- Laboratory analytical standard reagent
- Medical polymer material intermediate
4. Quality Specification Table
| Test Item | Standard Specification |
| CAS Number | 97-65-4 |
| Molecular Formula | C5H6O4 |
| Appearance | Uniform white crystal without discoloration |
| Purity | Industrial Grade ≥99.0%; Biotech Grade ≥99.5% |
| Melting Point | 165–168 ℃ |
| Moisture | ≤0.20% |
| Ash Content | ≤0.01% |
| Heavy Metals (Pb) | ≤10 ppm |
| Packaging | 25kg PE lined woven bag / plastic drum |
| Storage Condition | Sealed dry warehouse below 25 ℃, avoid damp and strong oxidants |
| Transportation Requirement | Ordinary solid chemical, moisture-proof packaging |
| Shelf Life | 36 months sealed storage |
Safety Warning
Low-toxic mild irritant solid. Dust irritates eyes, nasal mucosa and respiratory tract; long-term skin contact causes mild dry irritation. Operations require ventilation with dust mask and latex gloves. Avoid heating contact with concentrated strong alkali. Waste water neutralized with alkali before discharge; solid waste belongs to general organic industrial waste.
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