N,N-Dimethyl-p-Toluidine (DMPT)
High-Purity Tertiary Amine Accelerator — Cold-Cure Redox Co-Initiator for Acrylic, Dental & Adhesive Systems
CAS: 99-97-8 EC: 202-805-4 Assay: ≥ 99.0%
N,N-Dimethyl-p-Toluidine (DMPT) is a tertiary aromatic amine that serves as the standard reducing co-accelerator in benzoyl-peroxide (BPO) redox initiation, enabling room-temperature ("cold") cure of methyl methacrylate and related vinyl systems. Nexal Inc. supplies industrial-grade DMPT at ≥ 99.0% (GC) under an ISO 9001 quality system and REACH registration, ready as the amine activator for self-cure dental acrylics, orthopaedic bone cement, and acrylic adhesives, and delivered from our US distribution hub in Houston, Texas by HDPE drum, IBC, or ISO tank.
Technical Specifications (COA Data)
| Assay (GC) | ≥ 99.0% |
| Appearance | Colourless to pale-yellow transparent oily liquid |
| Density (20 °C) | 0.935 – 0.937 g/cm³ |
| Refractive Index (20 °C) | 1.544 – 1.546 |
| Water Content (KF) | ≤ 0.1% |
| Colour (APHA) | ≤ 50 |
| Flash Point (closed cup) | ≈ 83 °C |
*Regulatory: REACH registered. EC inventory 202-805-4. Listed on US TSCA, EU EINECS, China IECSC & Philippines PICCS. Classified under CLP (EC) No 1272/2008 — full GHS hazard data (acute toxicity, skin sensitisation, suspected carcinogenicity) in the SDS. Transport: UN 2810, Class 6.1, PG III. Not offered for direct food or therapeutic use.
Key Properties
• Molecular Formula: C₉H₁₃N
• Molecular Weight: 135.21
• Boiling Point: 211 °C
• Melting Point: −25 °C
Dental & Medical Acrylics
Amine activator paired with benzoyl peroxide for room-temperature cure of self-cure denture base and repair acrylics, temporary crown & bridge resins, and orthopaedic PMMA bone cement.
Adhesives & Sealants
Redox amine accelerator in anaerobic threadlockers and second-generation acrylic (SGA) structural adhesives, delivering fast, reliable fixture at ambient temperature.
Resins & Polymerisation
Accelerates peroxide cure of unsaturated polyester and acrylic casting resins, and acts as a redox co-initiator for vinyl / acrylonitrile polymerisation and an intermediate for dyes and colorants.