Trimethylolpropane Triacrylate (TMPTA) CAS 15625-89-5 Supplier | High Purity UV Monomer
Name: Trimethylolpropane Triacrylate
Cas:15625-89-5
Purity: 99%
MOQ: 1KG
Directory Guidance on Trimethylolpropane Triacrylate
Chemical Structure
Basic Info
Trimethylolpropane Triacrylate (TMPTA, CAS 15625-89-5): High-Efficiency Trifunctional Monomer for Radiation Curing Systems
Trimethylolpropane Triacrylate (TMPTA) is a versatile trifunctional acrylate monomer characterized by high reactivity, low volatility, and excellent crosslinking capabilities. Designed for ultra-violet (UV) and electron beam (EB) curing applications, TMPTA acts as both a reactive diluent and a crosslinking network promoter in sophisticated polymer formulations.
Its unique chemical structure featuring three acrylate ester groups allows it to rapidly form highly dense, three-dimensional polymer networks upon radiation exposure. This structural efficiency imparts exceptional surface hardness, scratch resistance, chemical durability, and heat tolerance to finished industrial coatings, graphic arts inks, and structural adhesives.
| Melting point | -66°C |
| Boiling point | >200°C |
| density | 1.1 g/mL at 25 °C (lit.) |
| vapor density | >1 (vs air) |
| vapor pressure | <0.01 mm Hg ( 20 °C) |
| refractive index | n20/D 1.474(lit.) |
| Fp | >230 °F |
| storage temp. | Refrigerator |
| form | Liquid |
| pka | 0[at 20 ℃] |
| color | Colorless to Light yellow to Light orange |
| Specific Gravity | 1.1 |
| Water Solubility | Miscible with water. |
To support seamless global supply chains and simplify regulatory audits for industrial formulators, our TMPTA manufacturing process operates under stringent quality and compliance frameworks.
ISO 9001:2015 & ISO 14001:2015: Certified quality management and environmental protection standards across manufacturing and handling facilities.
REACH Compliance: Fully registered for distribution in European Union markets, adhering to safe transport and chemical inventory standards.
GHS Harmonization: Safety profiles, packaging, and handling documentation align fully with Global Harmonized System regulations.
Technical Dossiers Available: Comprehensive Certificate of Analysis (COA), Safety Data Sheet (SDS) per REACH/OSHA requirements, Origin Declarations, and Batch Analysis Reports provided with every shipment.
Product Packaging
To maintain consistent reactivity and shelf stability, every batch of CAS 15625-89-5 undergoes systematic laboratory inspection prior to release:
Gas Chromatography (GC) Assay: Verifies functional purity and ensures residual mono- and di-ester content remains strictly within tight control limits.
Inhibitor Level Monitoring (MEHQ): Precise quantification of MEHQ (p-Methoxyphenol) via HPLC/UV spectrophotometry to ensure optimal radical stabilization during storage while maintaining predictable curing speeds during application.
Moisture & Acid Value Analysis: Karl Fischer titration ensures low water content (typically ≤ 0.1%), preventing premature reaction or destabilization in moisture-sensitive formulations. Acid value testing safeguards against pigment flocculation or substrate corrosion.
Viscosity & Color Grading: Rotational viscometry and APHA color testing ensure lot-to-lot color stability in clear coats and maintain precise dilution performance in high-viscosity resins.
Trimethylolpropane Triacrylate is an essential component across diverse radiation-cured and thermosetting industrial sectors:
UV/EB Cured Industrial Coatings: Widely used in clear wood finishes, plastic coatings, overprint varnishes, and metal coil coatings to enhance surface hardness, abrasion resistance, and solvent resistance.
UV Printing Inks: Serves as a high-speed reactive diluent in offset, flexographic, and screen inks, improving pigment wetting, tack response, and print cure speeds.
Electronics & Photoresists: Integrated into solder masks, dry film resists, and optical component formulations where fast crosslinking and thermal dimensional stability are critical.
Polymer Modification & Rubbers: Used as a co-agent in peroxide-cured elastomers and crosslinked thermoplastics to boost tensile strength, modulus, and chemical stability.
Formulation Handling Tip: Due to its trifunctional nature, higher concentrations of TMPTA increase crosslinking density and hardness, but may increase volumetric shrinkage. Formulators often combine TMPTA with mono- or difunctional monomers to balance film flexibility and substrate adhesion.
FAQ
A: TMPTA contains three reactive acrylate groups, whereas TPGDA or HDDA contain two. Consequently, TMPTA delivers higher curing speed, greater surface hardness, and superior chemical resistance, but produces higher crosslinking density which slightly reduces cured film flexibility compared to difunctional diluents.
A: Store in original sealed containers in a dry, dark, and well-ventilated warehouse at temperatures between 5°C and 30°C. Keep away from direct sunlight, UV light sources, strong oxidizers, and free radical initiators.
A: Yes, TMPTA exhibits high solvency and broad compatibility with major epoxy acrylates, polyester acrylates, polyurethane acrylates, and commercial free-radical photoinitiators (such as Type I and Type II systems).
Related References
Pubchem-Trimethylolpropane Triacrylate
Chemicalbook-Trimethylolpropane Triacrylate
Manufacturer of Trimethylolpropane Triacrylate
1. For products ≤50kg, we recommend using express delivery, which is usually called DDU service (discounted, convenient).
2. For products ≤500kg, we generally recommend air freight, which is usually called FOB, CFR or CIF service (fast and efficient).
3. For products >500kg, we generally recommend shipping by sea, which is usually called FOB, CFR or CIF service (economical, safe).
4. For high-value products, please choose air or express to ensure the safety of product transportation.
