Overview
Trimethylolpropane triacrylate , widely recognized in the industry as TMPTA, is a trifunctional acrylate monomer used as a reactive crosslinker and diluent in UV- and EB-curable systems.
Its three acrylate groups enable rapid network formation, making it a standard building block in radiation-curable formulations across coatings, adhesives, and inks. The CAS 15625-89-5 material is essential for high-performance applications.
In UV-curable coatings for automotive and industrial substrates, it increases crosslink density, improving scratch resistance and chemical durability of the cured film. Printing ink formulators use it as a reactive diluent.
This allows for precise control of viscosity without sacrificing cure speed or print resolution in energy-curable offset and flexographic inks. In adhesives and sealants, it contributes to cohesive strength and dimensional stability.
Electronics manufacturers incorporate it into conformal coatings and encapsulants where fast cure and thermal resistance are process requirements. It is supplied as a low-viscosity liquid in drum and IBC quantities.
The product is available in standard technical and industrial grades, with some suppliers offering low-skin-sensitization variants. Specifications are generally aligned with reactive monomer industry standards.
Material is commonly evaluated against viscosity, acid value, and inhibitor content to ensure consistency. It meets rigorous industrial requirements for high-speed manufacturing and durable end-use performance.
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Physical Properties
| Melting Point | -66°C |
| Boiling Point | >200 °C |
| Density | 1.1 g/cm³ (approx) |
| Flash Point | >230 °F |
| Color | Colorless to Light yellow to Light orange |
| Form | Liquid |
| Water Solubility | Miscible with water. |
| Vapor Pressure | <0.01 mm Hg ( 20 °C) |
| Refractive Index | n 20/D 1.474(lit.) |
| Log P | 4.35 at 20℃ |
Safety & Handling
Warning GHS07 GHS08 GHS09 Hazard Statements H315 Causes skin irritation H317 May cause an allergic skin reaction H319 Causes serious eye irritation H336 May cause drowsiness or dizziness H351 Suspected of causing cancer H360 May damage fertility or the unborn child H400 Very toxic to aquatic life H410 Very toxic to aquatic life with long lasting effects Precautionary Statements P203 Obtain, consult and follow expert instructions for use. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P271 Use only outdoors or in a well-ventilated area. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P318 IF exposed or concerned, get medical advice. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P391 Collect spillage. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P332+P317 Get emergency medical help. P333+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| HS Code | 29161290 |
| WGK (Germany) | 1 |
Other Names
Related Products
Chemical Properties
- CAS Number
- 15625-89-5
- EC Number
- 239-701-3
- Mol. Weight
- 296.31
- HS Code
- 29161290
- Category
- Flavors & Fragrances