Methacrylic Acid is a monofunctional carboxylic acid monomer extensively utilized as a precursor in paint and adhesive resin synthesis and the production of specialty esters. Commonly identified in the industry as MAA or 2-Methylpropenoic acid, this reactive organic compound serves as a critical comonomer to enhance the thermal stability and adhesive properties of ion-exchange resins and surface coatings. We offer this essential chemical building block with competitive factory pricing to support diverse industrial manufacturing needs. Our logistics framework ensures reliable bulk supply availability and customized specifications, fully accompanied by MSDS, TDS, COA documentation for quality assurance and regulatory compliance.
Methacrylic Acid CAS 79-41-4
- CAS: 79-41-4
- Synonyms: 2-Methylpropenoic acid, MAA, 2-Methylacrylic acid, Alpha-methylacrylic acid
- Einecs: 201-204-4
- Molecular Formula: C4H6O2
- Grade: Industrial grade 99%
- Package: 200kg iron drum or 50kg plastic drum packing
Product Description
Methacrylic acid
chemical formula：C4H6O2
molecular weight：86.089
CAS login number：79-41-4
EINECS login number：201-204-4
Melting point：16 ℃
Boiling point：163 ℃
water solubility：soluble
Density：1.015 g/cm³
Appearance：Colorless crystalline powder
Flash point：77 ℃（OC）
Security description：S26； S36/37/39；S45
Danger symbol：C
Winter Handling Alert: MAA freezes at approx. 15°C. We offer Reefer Container (Keep Warm) or Heating Blanket options to ensure liquid discharge upon arrival
use：Methacrylic acid is an important organic chemical raw material and an intermediate for polymers.
Toxicological data
1. Acute toxicity: LD50: 1600mg/kg (orally in mice); 500mg/kg (transdermal in rabbits).
2. Subacute and chronic toxicity: rats inhaled 4.5g/m3(5h), 5h, 5 times, nasal and eye irritation, weight loss, normal blood and urine tests, and normal anatomy and internal organs.
3. Mutagenicity: DNA adduct: Escherichia coli 50 μmol/L.
FAQ - Technical & Supply Chain
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Q:
Does Methacrylic Acid correspond to the free acid monomer or its methyl ester form (MMA)?
A: Methacrylic Acid is verified under CAS 79-41-4 as the functional carboxylic acid monomer (2-Methyl-2-propenoic acid), distinguishing it from Methyl Methacrylate (MMA) or Acrylic Acid to ensure the presence of the reactive acid group required for cross-linking and ionic bonding. -
Q:
What functional property does Methacrylic Acid impart when copolymerized into acrylic emulsions?
A: Methacrylic Acid is typically applied as a functional co-monomer in paints and adhesives to introduce polarity and carboxylic acid groups, which significantly enhance adhesion to metal substrates, mechanical stability, and the freeze-thaw resistance of the final latex polymer.
Documents
Documents and Product Support
For product review and sourcing evaluation, supporting documents can be coordinated according to the product type, inquiry stage, and order requirements.
- COA for batch-based quality reference
- TDS for key physical and chemical information
- SDS / MSDS for handling, storage, and safety reference
- Packing information for sample, trial, and bulk orders
- Technical communication based on application and specification requirements
Quotation
Information to Confirm Before Quotation
Clear sourcing information helps reduce specification mismatch and allows a more accurate quotation before sample or bulk order discussion.
- Product name and CAS number
- Application or intended end use
- Required purity, grade, or specification
- Sample quantity, trial order, or bulk demand
- Preferred packing form or net weight
- Destination country or port
- Required documents or compliance expectations
Storage & Handling
Packaging, Storage, and Handling Notes
Packaging form, storage conditions, shelf life, and shipment arrangements should be confirmed according to the product characteristics, package size, and destination requirements.
Before order confirmation, buyers are advised to review the corresponding product documents and confirm whether any special storage, labeling, or handling requirements apply.
Supply Support
Sample, Bulk Order and Repeat Supply Support
Support can be arranged for sample discussion, bulk supply planning, packaging confirmation, and routine sourcing communication based on the actual product and order requirements.
For repeat-use formulations or long-term procurement plans, buyers may discuss specification consistency, packaging preferences, delivery expectations, and document coordination in advance.
