Tri(propylene glycol) diacrylate, mixture of isomers
Tri(propylene glycol) diacrylate (CAS: 42978-66-5) is a versatile difunctional acrylate monomer. Its mixture of isomers offers excellent flexibility and adhesion properties. Primarily used in UV-curable coatings, inks, and adhesives, it contributes to rapid curing and durable finishes. This chemical serves as a valuable building block in polymer synthesis and materials science applications, providing enhanced crosslinking capabilities.
- IUPAC
- TRPGDA
- Synonyms
- TRPGDATri(propylene glycol) diacrylate, mixture of isomers

UV-Curable Coatings
Acts as a reactive diluent and crosslinker in UV-curable coating formulations, enhancing cure speed and film properties like hardness and scratch resistance.
Adhesives and Sealants
Imparts flexibility and adhesion to UV-curable adhesives and sealants, suitable for bonding various substrates in demanding applications.
Inks and Varnishes
Used in UV-curable inks and varnishes to improve flexibility, gloss, and abrasion resistance, ensuring vibrant and durable prints.
Polymer Synthesis
Serves as a monomer in the synthesis of specialty polymers and resins, contributing unique characteristics due to its polyether backbone and acrylate functionalities.
| Molecular weight | 300.35 |
|---|---|
| Linear formula | H2C=CHCO(OC3H6)3O2CCH=CH2 |
| Grade | technical grade |
| Density | 1.03 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.45(lit.) |
| Vapour pressure | <0.01 mmHg (20 °C) |
| Vapour density | >1 (vs air) |
| Contains / stabiliser | 250 ppm monomethyl ether hydroquinone as inhibitor |


Hazard statements
- H315Causes skin irritation
- H317May cause an allergic skin reaction
- H319Causes serious eye irritation
- H335May cause respiratory irritation
- H411Toxic to aquatic life with long-lasting effects
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 153 °C / 307.4 °F |
| Transport (UN / ADR) | UN 3082 9 / PGIII |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xi,N |
| Risk statements (R) | 36/37/38-43-51/53 |
| Safety statements (S) | 24-37-61 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Tri(propylene glycol) diacrylate used for?
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Tri(propylene glycol) diacrylate is primarily used in UV-curable coatings, inks, and adhesives, as well as in polymer synthesis. It acts as a reactive diluent and crosslinker, contributing to properties such as flexibility, adhesion, and rapid curing.
What is the CAS number and formula for Tri(propylene glycol) diacrylate?
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The CAS number for Tri(propylene glycol) diacrylate is 42978-66-5. The linear formula is H2C=CHCO(OC3H6)3O2CCH=CH2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Tri(propylene glycol) diacrylate in technical grade. We do not represent this product as USP, BP, or EP grade.
How should Tri(propylene glycol) diacrylate be handled safely?
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Handle with appropriate personal protective equipment, including eyeshields, gloves, and respiratory protection, as it can cause skin irritation, allergic skin reactions, and serious eye irritation. Avoid release to the environment.
How is this chemical packed and shipped?
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This chemical is packed in compliance with relevant regulations for transportation. Tech Serve Solutions exports this product globally.
How can I request a sample or quote?
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To request a sample or a quote for Tri(propylene glycol) diacrylate, please contact our sales department through our website or by phone.
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