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Send EmailMethylol Methacrylamide, N-Methylol Methacrylamide, NMMA, 923-02-4
CAS Number: 923-02-4
EC Number (EINECS): 213-085-0
Molecular Formula: C₅H₉NO₂
Molecular Weight: 115.13 g/mol
Chemical Class: Methacrylamide derivative (functional monomer)
| Parameter | Description |
|---|---|
| Chemical Name (IUPAC) | 2-Propenamide, N-(hydroxymethyl)-2-methyl |
| Other Names | NMMA, N-Methylol Methacrylamide, Methylol Methacrylamide, N-(Hydroxymethyl) Methacrylamide, N-Hydroxymethyl Methacrylamide, N-Methylol-2-methylacrylamide, Crosslinking Monomer NMMA |
| CAS Number | 923-02-4 |
| EC Number (EINECS) | 213-085-0 |
| Molecular Formula | C₅H₉NO₂ |
| Molecular Weight | 115.13 g/mol |
| Chemical Class | Methacrylamide derivative (functional monomer) |
| Structure | CH₂=C(CH₃)–CONH–CH₂OH |
| Appearance | Clear to light yellow liquid |
| Odor | Ester-like |
| Functional Groups | Methacrylate (C=C), amide, hydroxyl (-OH) |
| Form | Aqueous solution (50–54% active) |
| Property | Value / Range |
|---|---|
| Molecular Formula | C₅H₉NO₂ |
| Molecular Weight | 115.13 g/mol |
| Appearance | Clear to light yellow liquid |
| Odor | Ester-like |
| Active Content | 50–54% |
| Density (25°C) | 1.05–1.15 g/cm³ |
| Boiling Point | ~102°C |
| Freezing Point | < –37°C |
| Flash Point | Not applicable |
| Viscosity | ~5–20 mPa·s |
| Vapor Pressure (25°C) | 0.021 Pa |
| Acid Content | ≤ 1.0 mg KOH/g |
| Water Content | 40–45% |
| Color (APHA) | ≤ 20–50 |
| pH (Aqueous solution) | ~5–7 |
| Solubility in Water | Soluble (aqueous solution form) |
| Solubility in Solvents | Soluble in alcohols and other organic solvents |
| Property | Description |
|---|---|
| Chemical Class | Methacrylamide derivative (functional monomer) |
| Functional Groups | Methacrylate (C=C), amide, hydroxyl (-OH) |
| Reactivity | High; polymerization and crosslinking reactions |
| Polymerization | Free-radical polymerization (solution, emulsion) |
| Crosslinking | Self-crosslinking via hydroxymethyl groups or with other reactive groups |
| Copolymerization | Copolymerizes with acrylates, methacrylates, styrene, vinyl acetate |
| Thermal Decomposition | > 200°C releases CO, CO₂, and nitrogenous compounds |
| Hydrolysis | Hydrolyzes in acidic/basic media |
| Oxidation | Stable under normal conditions |
| Stabilizer | May contain inhibitor to prevent polymerization |
| Reaction Type | Description |
|---|---|
| Radical Polymerization | Forms crosslinkable polymers |
| Copolymerization | With acrylates, methacrylates, styrene, vinyl acetate |
| Self-Crosslinking | Forms ester bonds between hydroxymethyl groups |
| Hydrolysis | Hydrolyzes to acrylic acid and methylolamine derivatives |
| Condensation | Crosslinks under heat or acid catalysis |
| Property | Description |
|---|---|
| Crosslinking Capacity | Supports crosslinking in polymer systems |
| Film Strength | Improves film strength and integrity |
| Mechanical Strength | Enhances mechanical strength |
| Chemical Resistance | Improves chemical resistance |
| Water and Solvent Resistance | Contributes to water and solvent resistance |
| Wet Performance | Improves wet performance |
| Surface Strength | Enhances surface durability |
| Long-Term Performance | Provides long-term durability |
| Coating Durability | Increases coating durability |
| Fabric Reinforcement | Strengthens polymer fabric structure |
| Application | Function | Suitability |
|---|---|---|
| Water-Based Acrylic Resins | Crosslinking monomer | High |
| Water-Based Polyurethane Resins | Crosslinking monomer | High |
| Functional Polymer Dispersions | Crosslinking monomer | High |
| Application | Function | Suitability |
|---|---|---|
| Industrial Coatings | Crosslinking monomer | High |
| Automotive Coatings | Crosslinking monomer | High |
| Wood Coatings | Crosslinking monomer | High |
| Water-Based Paints | Crosslinking monomer | High |
| Application | Function | Suitability |
|---|---|---|
| Nonwoven Fabric Binders | Crosslinking monomer | High |
| Textile Finishing Agents | Crosslinking monomer | High |
| Fabric Coatings | Crosslinking monomer | High |
| Application | Function | Suitability |
|---|---|---|
| Construction Adhesives | Crosslinking monomer | High |
| Sealants | Crosslinking monomer | High |
| Floor Coatings | Crosslinking monomer | High |
| Application | Function | Suitability |
|---|---|---|
| Functional Polymer Production | Crosslinking monomer | High |
| Performance Polymers | Crosslinking monomer | High |
| High-Performance Resins | Crosslinking monomer | High |
| Polymer Science Research | Functional monomer | High |
| Industry | Suitability | Explanation |
|---|---|---|
| Resins and Polymers | High | Crosslinking monomer, polymer modification |
| Paints and Coatings | High | Crosslinking monomer, coating durability |
| Textile Chemicals | High | Binders, finishing agents |
| Nonwoven Fabrics | High | Binders |
| Construction Chemicals | High | Adhesives, sealants |
| Water-Based Systems | High | Water-based resins, dispersions |
| Performance Polymers | High | Specialty functional polymers |
| Cosmetics | Not suitable | Not used in cosmetics |
| Food | Not suitable | Not used as food additive |
| Type | Name / Description |
|---|---|
| IUPAC Name | 2-Propenamide, N-(hydroxymethyl)-2-methyl |
| Commercial Names | NMMA, N-Methylol Methacrylamide |
| Synonyms | N-Methylol Methacrylamide, Methylol Methacrylamide, N-(Hydroxymethyl) Methacrylamide, N-Hydroxymethyl Methacrylamide, N-Methylol-2-methylacrylamide, Methacrylamide N-methylol |
| CAS Number | 923-02-4 |
| EC Number | 213-085-0 |
| HS Code | 29242900 |
| Parameter | Value / Description |
|---|---|
| GHS Classification | Warning |
| Hazard Statements | H315 (Causes skin irritation), H317 (May cause allergic skin reaction), H319 (Causes serious eye irritation), H335 (May cause respiratory irritation) |
| Precautionary Statements | P261 (Avoid breathing dust/fume/gas/mist/vapors/spray), P280 (Wear protective gloves/protective clothing/eye protection/face protection), P302+P352 (IF ON SKIN: Wash with plenty of water), P305+P351+P338 (IF IN EYES: Rinse cautiously with water) |
| Oral LD50 (Rat) | ~1,000-2,000 mg/kg |
| Dermal LD50 (Rabbit) | > 2,000 mg/kg |
| Skin Irritation | Irritant |
| Eye Irritation | Irritant |
| Skin Sensitization | Positive (allergic contact dermatitis) |
| Mutagenicity | Negative |
| Carcinogenicity | Not classified |
| Target Organs | Skin, eyes, respiratory system |
| Parameter | Information |
|---|---|
| Storage Conditions | Cool, dry, well-ventilated area |
| Temperature | 15–30°C (protect from freezing) |
| Container | Tightly closed, original packaging (drum or IBC) |
| Freeze Protection | Freezing point < –37°C; freezing risk is low |
| Sunlight Protection | Protect from direct sunlight |
| Polymerization Risk | Keep away from heat and light; contains inhibitor |
| Shelf Life | 12 months (under recommended conditions) |
| Packaging | 200 kg drum, 1000 kg IBC |
| Parameter | Information |
|---|---|
| UN Number | Not regulated (not classified as dangerous goods) |
| Hazard Class | Not applicable |
| Packing Group | Not applicable |
| Proper Shipping Name | N-Methylol Methacrylamide Solution |
| ADR/RID | Not regulated |
| IMDG Code | Not regulated |
| IATA (Air) | Not regulated |
| Marine Pollutant | No |
| Parameter | Information |
|---|---|
| Fire Hazard | Combustible liquid (flash point not applicable) |
| Extinguishing Media | Water fog, foam, CO₂, dry chemical |
| Special Hazards | When heated, releases CO, CO₂, and nitrogenous compounds |
| Decomposition Products | CO, CO₂, nitrogen oxides |
| Protective Equipment | Self-contained breathing apparatus (SCBA), full protective clothing |
| Parameter | Information |
|---|---|
| Personal Protection | Gloves, safety goggles, face shield, protective clothing |
| Ventilation | Increase ventilation |
| Cleanup Methods | Absorb with inert absorbent material; collect in sealed containers |
| Environmental Precautions | Prevent entry into drains and water bodies |
| Waste Disposal | According to local regulations; incineration (hazardous waste) |
| Exposure Route | Action |
|---|---|
| Inhalation | Move to fresh air. Administer oxygen if breathing difficulty. Seek medical attention. |
| Skin Contact | Remove contaminated clothing. Wash with soap and plenty of water for at least 15 minutes. Seek medical attention. |
| Eye Contact | Rinse with plenty of water for at least 15 minutes. Seek medical attention. |
| Ingestion | Do NOT induce vomiting. Drink plenty of water. Seek medical attention. |
| Region / Authority | Status |
|---|---|
| EU REACH | Registered |
| Turkey KKDİK | Registration required |
| USA TSCA | Listed |
| EINECS | 213-085-0 |
| WGK (Germany) | 1 (slight hazard to water) |
| RoHS | Compliant |
| California Prop 65 | Not listed |
| Parameter | Value |
|---|---|
| Product | N-Methylol Methacrylamide (NMMA) |
| CAS | 923-02-4 |
| Appearance | Clear to light yellow liquid |
| Active Content | 50–54% aqueous solution |
| Molecular Weight | 115.13 g/mol |
| Key Industries | Resins, coatings, textiles, construction chemicals |
Functional Monomer: NMMA is a functional monomer that provides crosslinking capability in polymer systems. The hydroxymethyl group enables crosslinking reactions.
Water-Based Systems: NMMA is preferred as a performance-enhancing component in water-based resins, coating systems, and textile binders.
Crosslinking Capacity: Supports crosslinking in polymer structures, improving film strength and mechanical properties.
Aqueous Solution Form: The product is supplied as a 50–54% active aqueous solution. This form facilitates direct use in water-based systems.
Polymerization Risk: Readily polymerizable; contains inhibitor. Keep away from heat and light.
Skin Sensitizer: NMMA may cause allergic skin reactions (H317). Appropriate PPE required.
Storage: Store in cool, dry, well-ventilated areas. Freezing point < –37°C; freezing risk is low.
Shelf Life: 12 months. Inhibitor levels should be checked during long-term storage to prevent polymerization.
Versatile Applications: Used in paints and coatings, resins and polymers, textile chemicals, nonwoven fabrics, construction chemicals, and functional polymer production.
Regulatory Status: Registered under REACH. Not classified as dangerous goods.
IMPORTANT DISCLAIMER: This Technical Data Sheet (TDS) is for informational purposes only and is based on available technical data. The user is solely responsible for determining the product's suitability for their specific application and for complying with all applicable local, national, and international regulations. NMMA is readily polymerizable and is a known skin sensitizer! For complete safety, storage, handling, transportation, disposal, and regulatory compliance information, always refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier. Users are responsible for testing the product in their own processes and applications. All local, national, and international regulations must be followed when working with NMMA.