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Send EmailTripropylene Glycol Diacrylate, TPGDA, 42978-66-5
CAS Number: 42978-66-5
EC Number (EINECS): 255-982-0
Molecular Formula: C₁₅H₂₄O₆
Molecular Weight: 298.33 g/mol
Chemical Class: Diacrylate monomer
| Parameter | Description |
|---|---|
| Chemical Name (IUPAC) | 2-Propenoic acid, tripropylene glycol ester |
| Other Names | TPGDA, Tripropylene Glycol Diacrylate, Tripropylene Glycol Diester Acrylic Acid, Acrylic Acid Tripropylene Glycol Ester, Acrylate Monomer TPGDA |
| CAS Number | 42978-66-5 |
| EC Number (EINECS) | 255-982-0 |
| Molecular Formula | C₁₅H₂₄O₆ |
| Molecular Weight | 298.33 g/mol |
| Chemical Class | Diacrylate monomer |
| Structure | CH₂=CHCOO[CH₂CH(CH₃)O]₃COCH=CH₂ |
| Appearance | Clear, colorless liquid |
| Odor | Mild acrylate odor |
| Functionality | Two (diacrylate) |
| Property | Value / Range |
|---|---|
| Molecular Formula | C₁₅H₂₄O₆ |
| Molecular Weight | 298.33 g/mol |
| Appearance | Clear, colorless liquid |
| Odor | Mild acrylate odor |
| Density (25°C) | ~1.08 g/cm³ |
| Boiling Point | >250°C |
| Freezing Point | -15°C |
| Flash Point | ~110°C (closed cup) |
| Viscosity (25°C) | 25–50 mPa·s (cP) |
| Purity | ≥ 98.0% |
| Acid Content | ≤ 0.02% |
| Water Content | ≤ 0.2% |
| Color (APHA) | ≤ 30 |
| Functionality | 2 (diacrylate) |
| Theoretical Molecular Weight | ~300 g/mol |
| Refractive Index | ~1.452 |
| Surface Tension | ~30-35 mN/m |
| Vapor Pressure (20°C) | <0.01 mmHg (very low) |
| Property | Description |
|---|---|
| Chemical Class | Diacrylate monomer |
| Functional Groups | Two acrylate groups (C=C), ether linkages |
| Reactivity | High; readily polymerizes under UV/EB |
| Polymerization | Free-radical polymerization (UV, EB, heat, initiator) |
| Copolymerization | Copolymerizes with other acrylates, methacrylates, styrene |
| Thermal Decomposition | > 200°C releases CO, CO₂, and irritant vapors |
| Hydrolysis | Slow hydrolysis in acidic/basic media |
| Oxidation | May form peroxides in air |
| Polymerization Inhibitor | 200–400 ppm MEHQ (hydroquinone monomethyl ether) |
| Reaction Type | Description |
|---|---|
| Radical Polymerization | UV/EB or heat → Crosslinked network |
| Copolymerization | With other acrylates, methacrylates, styrene |
| Hydrolysis | Acrylic acid + Tripropylene glycol |
| Michael Addition | Reacts with nucleophiles at β-carbon |
| Parameter | Information |
|---|---|
| Stabilizer | 200–400 ppm MEHQ |
| Stabilizer Function | Prevents premature free-radical polymerization |
| Storage Temperature | 15–25°C |
| Inhibitor Removal | Can be removed by distillation |
| Application | Function | Suitability |
|---|---|---|
| UV Curable Coatings | Reactive diluent, crosslinker | High |
| EB Curable Coatings | Reactive diluent, crosslinker | High |
| Industrial Coatings | Reactive diluent | High |
| Wood Coatings | Reactive diluent | High |
| Plastic Coatings | Reactive diluent | High |
| Application | Function | Suitability |
|---|---|---|
| Laminating Adhesives | Reactive diluent | High |
| Pressure-Sensitive Adhesives | Reactive diluent | High |
| Structural Adhesives | Reactive diluent | High |
| Application | Function | Suitability |
|---|---|---|
| UV Curable Printing Inks | Reactive diluent | High |
| Varnishes | Reactive diluent | High |
| Flexographic Inks | Reactive diluent | High |
| Offset Inks | Reactive diluent | High |
| Application | Function | Suitability |
|---|---|---|
| Electronic Encapsulation | Reactive diluent, crosslinker | High |
| Optical Fiber Coatings | Reactive diluent | High |
| 3D Printing Resins | Reactive diluent | High |
| Photoresists | Reactive diluent | High |
| Application | Function | Suitability |
|---|---|---|
| Composite Materials | Reactive diluent | High |
| Polymer Modification | Crosslinker | High |
| Flexible Plastics and Films | Reactive diluent | High |
| Industry | Suitability | Explanation |
|---|---|---|
| UV Coatings | High | Reactive diluent, crosslinker |
| UV Adhesives | High | Reactive diluent |
| Printing Inks | High | Reactive diluent |
| Electronics | High | Encapsulation, optical fiber coatings |
| 3D Printing | High | Reactive diluent |
| Composites | High | Reactive diluent |
| Automotive | High | UV coatings |
| Cosmetics | Not suitable | Not used in cosmetics |
| Food | Not suitable | Not used as food additive |
| Property | TPGDA | HDDA | TMPTA | PETA |
|---|---|---|---|---|
| Functionality | 2 | 2 | 3 | 4 |
| Molecular Weight | 298 g/mol | 226 g/mol | 296 g/mol | 352 g/mol |
| Viscosity (25°C) | 25–50 cP | 5–10 cP | 50–100 cP | 100–300 cP |
| Flexibility | High | Moderate | Low | Very low |
| Hardness | Moderate | High | Very High | Excellent |
| Chemical Resistance | Good | Good | Excellent | Excellent |
| Primary Use | Coatings, adhesives | Coatings | Coatings, inks | Coatings, inks |
| Type | Name / Description |
|---|---|
| IUPAC Name | 2-Propenoic acid, tripropylene glycol ester |
| Commercial Names | TPGDA, Tripropylene Glycol Diacrylate |
| Synonyms | Tripropylene glycol diester acrylic acid, Acrylic acid tripropylene glycol ester, Acrylate monomer TPGDA |
| CAS Number | 42978-66-5 |
| EC Number | 255-982-0 |
| HS Code | 29161200 |
| Parameter | Value / Description |
|---|---|
| GHS Classification | Warning |
| Signal Word | Warning |
| Hazard Statements | H315 (Causes skin irritation), H317 (May cause allergic skin reaction), H319 (Causes serious eye irritation), H335 (May cause respiratory irritation) |
| Precautionary Statements | P261 (Avoid breathing dust/fume/gas/mist/vapors/spray), P280 (Wear protective gloves/protective clothing/eye protection/face protection), P302+P352 (IF ON SKIN: Wash with plenty of water), P305+P351+P338 (IF IN EYES: Rinse cautiously with water) |
| Oral LD50 (Rat) | > 2,000 mg/kg |
| Dermal LD50 (Rabbit) | > 2,000 mg/kg |
| Skin Irritation | Irritant |
| Eye Irritation | Irritant |
| Skin Sensitization | Positive (allergic contact dermatitis) |
| Mutagenicity | Negative |
| Carcinogenicity | Not classified |
| Target Organs | Skin, eyes, respiratory system |
| Parameter | Information |
|---|---|
| Storage Conditions | Cool, dry, well-ventilated area |
| Temperature | 15–25°C (store under inert atmosphere) |
| Container | Tightly closed, dark, plastic (HDPE) drums, IBC tanks |
| Special Requirements | Must contain inhibitor (MEHQ); avoid extreme temperatures |
| Sunlight Protection | Protect from direct sunlight |
| Air Exposure | Limit air exposure (polymerization risk) |
| Shelf Life | 12 months (under recommended conditions) |
| Packaging | 200 kg drum, 1000 kg IBC, ISO tank |
| Parameter | Information |
|---|---|
| UN Number | Not regulated (not classified as dangerous goods) |
| Hazard Class | Not applicable |
| Packing Group | Not applicable |
| Proper Shipping Name | Tripropylene Glycol Diacrylate |
| ADR/RID | Not regulated |
| IMDG Code | Not regulated |
| IATA (Air) | Not regulated |
| Marine Pollutant | No |
| Parameter | Information |
|---|---|
| Fire Hazard | Combustible liquid (flash point ~110°C) |
| Extinguishing Media | Water fog, foam, CO₂, dry chemical |
| Special Hazards | When heated, releases CO, CO₂, and irritant vapors |
| Decomposition Products | CO, CO₂, acrylate vapors |
| Protective Equipment | Self-contained breathing apparatus (SCBA), full protective clothing |
| Explosion Risk | Vapor/air mixtures may be explosive at high temperatures |
| Parameter | Information |
|---|---|
| Personal Protection | Gloves, safety goggles, face shield, protective clothing |
| Ventilation | Increase ventilation; evacuate area |
| Cleanup Methods | Absorb with inert absorbent material; collect in sealed containers |
| Environmental Precautions | Prevent entry into drains and water bodies |
| Waste Disposal | According to local regulations; incineration (hazardous waste) |
| Exposure Route | Action |
|---|---|
| Inhalation | Move to fresh air. Administer oxygen if breathing difficulty. Seek medical attention. |
| Skin Contact | Remove contaminated clothing. Wash with soap and plenty of water for at least 15 minutes. Seek medical attention. |
| Eye Contact | Rinse with plenty of water for at least 15 minutes. Seek medical attention. |
| Ingestion | Do NOT induce vomiting. Drink plenty of water. Seek medical attention. |
| Region / Authority | Status |
|---|---|
| EU REACH | Registered |
| Turkey KKDİK | Registration required |
| USA TSCA | Listed |
| EINECS | 255-982-0 |
| WGK (Germany) | 1 (slight hazard to water) |
| RoHS | Compliant |
| California Prop 65 | Not listed |
| Parameter | Value |
|---|---|
| Product | Tripropylene Glycol Diacrylate (TPGDA) |
| CAS | 42978-66-5 |
| Appearance | Clear, colorless liquid |
| Density | ~1.08 g/cm³ |
| Viscosity (25°C) | 25–50 cP |
| Functionality | 2 (diacrylate) |
| Key Industries | UV coatings, adhesives, inks, electronics |
UV/EB Curable Monomer: TPGDA is a widely used difunctional reactive diluent in UV and electron beam (EB) curable systems.
Balanced Properties: Provides high reactivity, flexibility, and excellent adhesion. Offers a good balance between hardness and flexibility.
Low Viscosity: Low viscosity (25–50 cP) facilitates its use as a reactive diluent in formulations.
Polymerization Risk: Readily polymerizes; always contains inhibitor (MEHQ). Keep away from heat and light.
Skin Sensitizer: TPGDA may cause allergic skin reactions (H317). Appropriate PPE required.
Low Volatility: Low vapor pressure and high boiling point (>250°C) provide low volatility.
Storage: Store in cool, dark, well-ventilated areas. Shelf life is 12 months.
Hydrolysis: Slow hydrolysis in acidic/basic media. Protect from moisture.
Alternatives: HDDA provides lower viscosity, TMPTA provides higher functionality and hardness. Selection depends on application.
Regulatory Status: Not classified as dangerous goods for transport. Avoid release to the environment.
IMPORTANT DISCLAIMER: This Technical Data Sheet (TDS) is for informational purposes only and is based on available technical data. The user is solely responsible for determining the product's suitability for their specific application and for complying with all applicable local, national, and international regulations. TPGDA readily polymerizes and is a known skin sensitizer! For complete safety, storage, handling, transportation, disposal, and regulatory compliance information, always refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier. Users are responsible for testing the product in their own processes and applications. All local, national, and international regulations must be followed when working with TPGDA.