Industry Grade 99% N,N-Dimethyl-p-toluidine CAS 99-97-8

N,N-Dimethyl-p-toluidine (DMPT) — Product Detail Page

1. Product Overview

N,N-Dimethyl-p-toluidine (DMPT) is a tertiary aromatic amine supplied as a clear, colorless to light-yellow liquid. It is one of the most widely used room-temperature polymerization promoters in the world: paired with organic peroxides such as benzoyl peroxide (BPO), it generates free radicals that cure methacrylate, acrylate, unsaturated polyester and epoxy-acid systems at ambient temperature.

A single compound, four core value propositions:

Polymerization Acceleration:

● a room-temperature redox promoter for methacrylate, acrylate, unsaturated polyester and epoxy curing;

Dental & Medical Materials:

● the standard activator in self-curing denture resins, PMMA bone cement and dental restorative systems;

Industrial Adhesives & Composites:

● a promoter for structural adhesives, FRP composites and electronic potting systems.

2. Product Information (Quick Facts)

3. Chemistry & Grades

DMPT is a strong electron donor: the dimethylamino group on the aromatic ring donates electron density, which is exactly what makes it an efficient partner for peroxide initiators. In a typical redox system, the amine reduces the peroxide to generate free radicals, so polymerization proceeds rapidly at room temperature — no external heat or UV required. Its cure rate can be tuned by dosage, making it the workhorse promoter across resin technologies.

Commercial DMPT is supplied at ≥ 98.0% assay (GC) as a clear liquid. Industrial/promoter grade serves composites, adhesives and coatings

4. Key Features & Benefits

● Efficient room-temperature cure: with BPO or other organic peroxides, promotes fast radical polymerization at ambient temperature — no heat or UV needed.

● Wide resin compatibility: works across methacrylate, acrylate, unsaturated polyester and epoxy-acid systems.

● Tunable cure speed: simple dosage control lets formulators set gel time from minutes to hours.

● Strong electron donor: versatile co-initiator and photoinitiator co-agent in specialty polymerization.

5. Main Applications

5.1 Polymerization Acceleration (Core Application)

DMPT is the standard room-temperature promoter of radical resin systems:

● Methacrylate and acrylate resins: redox promoter with BPO for ambient-temperature curing of MMA-based systems;

● Unsaturated polyester resins: room-temperature cure promoter for hand lay-up, casting and repair applications;

● Epoxy–acid anhydride systems: accelerator that lowers cure temperature and shortens cycle time;

● Specialty polymerization: co-initiator in photopolymerization and in acrylonitrile polymerization.

5.2 Dental & Medical Materials

● Self-curing denture resins: key component of self-polymerizing denture base liquids (self-curing denture water);

● Dental restorative materials: promoter in composite and repair formulations;

● Artificial fingernail preparations: cure accelerator in acrylic nail systems.

5.3 Dye & Fine-Chemical Intermediates

● Dye synthesis: intermediate for cationic, basic and dispersion dyes;

● Agrochemical intermediates: precursor in pesticide synthesis.

5.4 Industrial Adhesives & Composites

● Structural adhesives: promoter for room-temperature-curing acrylic and methacrylate adhesives;

● FRP and composites: cure promoter in glass-fiber-reinforced plastic production;

● Electronic materials: accelerator in potting, encapsulation and insulating compounds.

6. Packaging, Storage & Transport

Packaging (customizable):

● 25 kg HDPE jerry can, 200 kg HDPE drum or galvanized iron drum, 1,000 L IBC;

Storage:

● Keep in a cool, dry, well-ventilated area away from direct sunlight, heat and ignition sources;

● Keep containers tightly closed to prevent oxidation and color drift;

● Avoid contact with strong oxidizing agents

● Recommended storage temperature 5 °C – 35 °C.

Why Choose Jinan Future Chemical Co., Ltd.?

● Factory-direct supply: own production capacity, transparent pricing, no middleman markup;

● Stable quality: strict internal control, every batch tested, COA with every shipment;

● Export experience: familiar with sea/air shipping documentation for chemical commodities, complete paperwork support;

● Fast response: quotations and technical support (COA, dosage advice) within 24 hours; small trial orders accepted.

FAQ

Q1: What is N,N-dimethyl-p-toluidine (DMPT) used for?

DMPT is a room-temperature polymerization promoter: with organic peroxides such as BPO it cures methacrylate, acrylate, unsaturated polyester and epoxy systems. It is the standard activator in self-curing denture resins and PMMA bone cement, and is also used as a dye and agrochemical intermediate.

Q2: How does DMPT accelerate polymerization?

DMPT is a strong electron donor. It reacts with an organic peroxide (typically benzoyl peroxide) in a redox couple that generates free radicals at ambient temperature; those radicals initiate radical polymerization of the monomer. Cure speed is controlled by the amine/peroxide ratio and dosage.

Q3: What is the difference between DMPT and N,N-dimethylaniline (DMA)?

Both are tertiary aromatic amine promoters, but DMPT carries a para-methyl group on the ring. That substituent changes the electron density and cure kinetics, so DMPT shows different (generally higher) promoting activity and is preferred in many MMA and polyester formulations. Resin suppliers usually specify which amine to use for their system.

Q4: Is DMPT safe to handle?

DMPT is harmful if swallowed and irritating to skin and eyes,. Use gloves, goggles and adequate ventilation, avoid skin contact and store it separately from peroxides. It is an industrial chemical;