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Trimethylolpropane triacrylate
Trimethylolpropane triacrylate
Trimethylolpropane triacrylate

Trimethylolpropane triacrylate

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  • Category

    Acrylate series

  • Describe

    Trimethylolpropane triacrylate (TMPTA) is a commonly used trifunctional acrylate active monomer with extremely high reactivity and crosslinking density. It is one of the most common crosslinkers in UV/EB curing systems and is widely used in inks, coatings, adhesives, 3D printing and other fields.

  • Cas No.

    15625-89-5

  • Purity

    mixture

  • Synonym(s)

    TMPTA

Physical and chemical properties

  • 1. Chemical Identity
    • Chemical Name: Trimethylolpropane triacrylate
    • IUPAC Name: [2-(Acryloyloxymethyl)-2-ethylpropane-1,3-diyl] diacrylate
    • Synonyms: TMPTA, 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol triacrylate
    • CAS Number: 15625-89-5
    • EC Number: 239-701-3
    • Molecular Formula: C15​H20​O6​
    • Molecular Weight: 296.32 g/mol
  • 2. Physical Properties
    • Appearance: Clear, colorless to pale yellow viscous liquid.
    • Odor: Mild, characteristic, acrylic/ester-like.
    • Melting Point: <-20 °C (<-4 °F)
    • Boiling Point: >200 °C (>392 °F) at 1 hPa (Decomposes at higher temperatures)
    • Density: 1.10 - 1.12 g/cm³ at 20 °C
    • Solubility:
    • In Water: < 0.1 g/L at 20 °C (Insoluble)
    • In Organic Solvents: Soluble in many common organic solvents (e.g., acetone, esters, ketones).
    • Vapor Pressure: <0.01 hPa at 20 °C
    • Viscosity: 80 - 120 mPa·s at 25 °C
  • 3. Chemical Properties and Stability
    • Stability: Stable under recommended storage conditions. Typically supplied with a polymerization inhibitor (e.g., MEHQ).
    • Incompatibilities: Incompatible with strong oxidizing agents, strong bases, strong acids, reducing agents, peroxides, and free-radical initiators.
    • Hazardous Polymerization: May occur if not properly inhibited or if exposed to high temperatures, direct sunlight, UV radiation, or contaminants. Polymerization is a highly exothermic reaction and can be rapid and violent.
    • Hazardous Decomposition Products: Combustion may produce toxic fumes of carbon monoxide (CO) and carbon dioxide (CO2​).
  • 4. Other Key Data
    • Flash Point: >145 °C (>293 °F) - Closed cup
    • Refractive Index (n20/D):: ~1.474
 

MSDS

Trimethylolpropane triacrylate--MSDS     Download
 

Certificates Of Analysis

Trimethylolpropane triacrylate--COA      Download
 

Application

1. UV-curing coatings: floor paint, piano paint, car paint, wood paint, metal protective coating, plastic surface coating. TMPTA is the most widely used multifunctional acrylate active diluent in the field of radiation curing. Before ultraviolet irradiation, TMPTA plays a diluting role; after irradiation, it also participates in the reaction to form part of the cured film, with excellent solvent resistance and hardness.

2. Special rubber vulcanizing agent: TMPTA can be used as a vulcanizing active agent for special rubber, such as EPDM, EPDM, chlororubber, silicone rubber, etc. Adding TMPTA can significantly shorten the vulcanization time, increase the degree of vulcanization, and enhance the mechanical strength, wear resistance, solvent resistance and corrosion resistance of the product.

3. Light-curing coatings, photoresists, flexible printings, solder resists, anti-corrosive agents, paints and polymer modification: TMPTA is also widely used in these industrial fields, mainly to provide high curing speed and high cross-linking density, forming a cured film with excellent solvent resistance and hard scratch resistance.

4. Anti-reflective optical film: When preparing anti-reflective optical film, TMPTA can be used as part of the hardening coating, and work with other ingredients such as polyurethane acrylate oligomers, fluorine-modified resins, etc. to improve the wear resistance and reduce the reflectivity of the film.

5. Printing inks: packaging printing inks (such as food bags, labels), screen printing inks.

6. Adhesives: electronic component packaging glue, automotive structural glue, optical glue.

7. 3D printing materials: light-curing resins (such as SLA/DLP printing consumables).

8. Electronic materials: PCB photoresists, optical film coatings for display screens.

9. Beauty products: UV-curing nail polish, quick-drying nail glue.

10. Industrial composite materials: fiberglass products, carbon fiber reinforced plastics.

11. Flexible plates: printing photosensitive resin plates (such as packaging printing plates).

Safety Information

  • This information is a summary based on the Globally Harmonized System of Classification and Labelling of Chemicals (GHS).
    • 1. GHS Classification
      • Skin Irritation (Category 2)
      • Serious Eye Irritation (Category 2A)
      • Skin Sensitization (Category 1)
      • Specific Target Organ Toxicity — Single Exposure (Category 3), Respiratory System
      • Hazardous to the Aquatic Environment, Chronic Hazard (Category 2)
    • 2. GHS Label Elements
      • Pictograms:
        • Exclamation Mark (GHS07)
        • Environment (GHS09)
        • Signal Word: Warning
      • Hazard Statements (H-Statements):
        • H315: Causes skin irritation.
        • H317: May cause an allergic skin reaction.
        • H319: Causes serious eye irritation.
        • H335: May cause respiratory irritation.
        • H411: Toxic to aquatic life with long lasting effects.
      • Precautionary Statements (P-Statements):
      • Prevention:
        • P261: Avoid breathing dust/fume/gas/mist/vapors/spray.
        • P272: Contaminated work clothing should not be allowed out of the workplace.
        • P273: Avoid release to the environment.
        • P280: Wear protective gloves, eye protection, and face protection.
      • Response:
        • P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
        • P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
        • P333 + P313: If skin irritation or rash occurs: Get medical advice/attention.
        • P337 + P313: If eye irritation persists: Get medical advice/attention.
        • P391: Collect spillage.
      • Storage:
        • P403 + P233: Store in a well-ventilated place. Keep container tightly closed.
      • Disposal:
        • P501: Dispose of contents/container to an approved hazardous waste disposal plant.
    • 3. Summary of Primary Hazards
      • Health Hazards: Causes irritation to the skin, eyes, and respiratory system. It is a known skin sensitizer, meaning repeated or prolonged contact can lead to the development of an allergic skin reaction (allergic contact dermatitis).
      • Environmental Hazards: Toxic to aquatic life with long-lasting effects. Release into the environment should be avoided.
      • Reactivity Hazards: The product is a trifunctional reactive monomer that can undergo rapid hazardous polymerization if not properly stabilized and handled. Keep away from heat, sunlight, and contamination.

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