N-Methylol Acrylamide, identifiable by CAS 924-42-5, functions as a bifunctional crosslinking monomer used primarily to create self-crosslinking latices for textile sizing and fiber finishing. Chemically defined as N-(Hydroxymethyl)acrylamide, this white crystalline solid (or aqueous solution) serves as a reactive building block that introduces pendant hydroxymethyl groups into polymer chains, enabling thermal curing without external crosslinkers. The substance, often referred to as NMAM or N-MAM in emulsion polymerization, acts as a wet-strength improver in paper resins and an adhesion promoter in non-woven fabric binders. We facilitate bulk supply of this functional monomer with competitive factory pricing, capable of meeting customized specifications for solid content and inhibitor levels, backed by comprehensive MSDS, TDS, COA documentation.
N‑Methylol Acrylamide CAS 924-42-5
- CAS: 924-42-5
- Synonyms: N-Methylol acrylamide, NMA, Acrylamide N-methylol derivative
- Molecular Formula: C4H7NO2
- Grade: Industrial grade 99%
- Package: 10kg/carton
Product Description
N-Hydroxymethyl acrylamide
N-Hydroxymethacrylamide is a water-soluble monomer, referred to as N-MAM, HAM, N-MA
CAS No. 924-42-5
Formula: C4H7NO2
Molecular Weight: 101.10
Melting Point: 74-75°C
Density: 1.074
Water Solubility: <0.1 g/100 mL at 20.5°C
Specification
Purity: 99.50%
Package: 10kg/carton
Physical and chemical properties
White crystalline powder, melting point 74~75°C. It is soluble in water, ethanol, soluble in fatty acid esters, and insoluble in hydrophobic solvents such as hydrocarbons and halogenated hydrocarbons. When acids are present in aqueous solutions, heating quickly polymerizes into insoluble resins. Since the molecular structure contains vinyl for polymerization properties and hydroxymethyl groups for condensation properties, crosslinking linear polymers is the most effective. If copolymerized with acrylate monomers, hydroxymethyl groups are introduced, which can be cross-linked by heating alone. Low toxicity, LD50420mg/kg.
Quality Index
Appearance White powder
pH value 7.0~8.0(2~10mlH2O)
Mass fraction of MMAM≥ 95.0%
Free formaldehyde ≤0.5%
Moisture ≤3.0%
Water insoluble ≤4.0%
Applications
are raw materials for the manufacture of thermosetting resins, light-curing epoxy coatings, oil-resistant coatings and drying coatings. Its copolymer emulsions are used for fiber finishing, fabric, leather and paper coatings. It is also used as an adhesive for wood, metal, etc.
Used as a crosslinking monomer for acrylic emulsions. The amount of pressure-sensitive adhesive for carboxyl-containing acrylate emulsions is l%~2% of the total monomer mass, and if it exceeds 3%, the initial adhesion will be greatly reduced. For emulsion adhesives without carboxyl groups, the general dosage does not exceed 5%. The MMAM crosslinking reaction temperature alone is higher, generally 120~170°C, and the addition of proton-type catalysts can reduce the crosslinking temperature. Acrylic acid (AA) can provide both hydrogen protons and copolymerize with acrylates, so MMAM is used as a compound crosslinker with AA, and the dosage is preferably 3:2. The crosslinker HA can replace N-hydroxymethylacrylamide and does not contain formaldehyde.
FAQ - Technical & Supply Chain
-
Q:
Is N‑Methylol Acrylamide typically used as a functional monomer rather than a finished polymer?
A: It is generally used as a functional monomer or comonomer in polymer systems, where it contributes specific reactive functionality rather than serving as a finished material. -
Q:
Does this monomer provide self-crosslinking properties in emulsion polymerization?
A: N-Methylol Acrylamide is typically applied as a comonomer in acrylic or vinyl acetate emulsions, where the pendant methylol groups react upon heating or acid catalysis to form a crosslinked network, significantly improving water and solvent resistance.
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
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
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.
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.
