Molekula
TMPTA
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Trimethylolpropane triacrylate (TMPTA) is a highly reactive triacrylate monomer widely used in UV-curable coatings, adhesives, and inks for its rapid curing properties and excellent adhesion. This clear, low-viscosity liquid enhances cross-linking in formulations, delivering durability and chemical resistance. Catalogue details: CAS 15625-89-5, molecular formula (H2C=CHCO2CH2)3CC2H5, molecular weight 296.32, ambient storage, signal word Warning. Molekula supplies TMPTA from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
-
500 g — £46.80 per pack ex VAT · £56.16 inc. VAT
-
1 kg — £80.40 per pack ex VAT · £96.48 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Clear liquid |
| Colour (Pt-Co) | ≤60 |
| Water | ≤0.1% |
| Viscosity | 80 - 130 (@ 25 Deg C mPa.s) |
| Assay | 80-86.5% |
| Acid Value (mg KOH/g) | ≤0.4 |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 195 °C |
| Transport Class | 9 |
| Packing Group | III |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Viscous, colorless to tan liquid |
| Odour | Acrylic or pungent odor |
| Density | 1.11 g/cm³ at 20 °C |
| Water Solubility | Insoluble in water |
| Refractive Index | 1.4735 |
| log P (octanol/water) | 2.75 |
Source: PubChem CID 27423 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 90027098 |
| CAS Number | 15625-89-5 |
| IUPAC Name | 2,2-bis(prop-2-enoyloxymethyl)butyl prop-2-enoate |
| EC Number | 239-701-3 |
| Molecular Formula | (H2C=CHCO2CH2)3CC2H5 |
| Molecular Weight | 296.32 |
| Exact Mass | 296.126 |
| SMILES | CCC(COC(=O)C=C)(COC(=O)C=C)COC(=O)C=C |
| InChIKey | DAKWPKUUDNSNPN-UHFFFAOYSA-N |
| InChI | InChI=1S/C15H20O6/c1-5-12(16)19-9-15(8-4,10-20-13(17)6-2)11-21-14(18)7-3/h5-7H,1-3,8-11H2,4H3 |
| PubChem CID | 27423 |
| UN Number | UN3082 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29161250 |
| Tariff Code | 2916120090 |
Safety & GHS
-
Health Hazard
GHS07
-
Serious Health Hazard
GHS08
-
Hazardous to the Environment
GHS09
Hazard statements
- H315 Causes skin irritation
- H317 May cause an allergic skin reaction
- H319 Causes serious eye irritation
- H351 Suspected of causing cancer
- H400 Very toxic to aquatic life
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P264 Wash thoroughly after handling
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol triacrylate
- M 309
- NK Ester A TMPT
- Ogumont T 200
- Saret 351
- Sartomer SR 351
- Setalux UV 2241
- SR 351
- TRIMETHYLOLPROPANE TRIACRYLATE
- Viscoat 295
Frequently asked questions
What is TMPTA (trimethylolpropane triacrylate) commonly used for?
TMPTA is primarily used as a reactive diluent and crosslinking agent in UV-curable coatings, adhesives, inks, and composites for high-performance applications.
What is the chemical formula and molecular weight of TMPTA?
The chemical formula is **(H₂C=CHCO₂CH₂)₃CC₂H₅**, and the molecular weight is **296.32 g/mol**.
How should TMPTA be stored?
Store TMPTA in a tightly sealed container at **ambient temperature**, away from heat, sparks, and open flames.
What grades of TMPTA does Molekula supply?
Molekula supplies **industrial-grade TMPTA** with high purity, suitable for UV-curable formulations.
Can Molekula supply TMPTA in bulk quantities?
Yes, Molekula can supply TMPTA in **bulk quantities** (drums, IBCs, or custom packaging) for large-scale production needs.
What documentation comes with a TMPTA order?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **batch-specific documentation** for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.