Photoinitiator TPO-L Supplier in Malaysia
- Also known as
- TPO-L
- Ethyl (2,4,6-Trimethylbenzoyl)phenylphosphinate
Photoinitiator TPO-L supplier enquiries in Malaysia are relevant to formulators of UV coatings, inks, adhesives, electronics materials and 3D-printing resins. TPO-L is a liquid Type I photoinitiator, also called ethyl (2,4,6-trimethylbenzoyl)phenylphosphinate, used to initiate radical curing under a suitable light source.
The liquid form can simplify incorporation into some resin systems, but commercial grades still differ in assay, colour, viscosity, volatile content and cure response. Clear coatings, pigmented inks and thick photopolymer sections may require different formulation controls, so the end use and lamp or LED system should accompany the product name.
TPO-L is distinct from solid TPO and from photoinitiator 184. Those products may serve overlapping UV-curing applications but are not interchangeable by name because their physical form, solubility and response can differ.
Send the required grade, formulation, light source, purity, viscosity or handling requirement, quantity and delivery location with your enquiry. Availability, packing and documentation are confirmed with the quotation.

- CAS number
- 84434-11-7
- Formula
- C18H21O3P
- Grade
- standard liquid grade, low-viscosity formulation grade, high-purity grade
- Appearance
- clear to pale yellow liquid
Photoinitiator TPO-L grades and forms
We supply several forms to suit different formulating and dosing setups. If you need a size that is not listed, ask us.
| Grade | Form | Assay | Typical use | Packing |
|---|---|---|---|---|
| Standard TPO-L liquid grade | clear to pale yellow liquid | — | Liquid Type I photoinitiator for UV-curable coatings, inks and adhesives where liquid handling or formulation compatibility is preferred. | Confirm the required liquid pack format with the quotation. |
| Low-viscosity TPO-L formulation grade | low-viscosity liquid | — | Photopolymer formulations and coatings that need easier incorporation into liquid resin systems and controlled cure response. | Confirm the required liquid pack format with the quotation. |
| High-purity TPO-L grade | pale yellow liquid | — | Clear, electronic or other technically demanding UV formulations requiring tighter colour, assay and residual controls. | Confirm the required liquid pack format with the quotation. |
How to buy photoinitiator TPO-L from ChemTrade
Request a quote for photoinitiator TPO-L
Use the form below to request a quotation. You can also email sales@chemtrademalaysia.com or send us a message on WhatsApp.
Specifications
| Parameter | Value | Method |
|---|---|---|
| Chemical identity | ethyl (2,4,6-trimethylbenzoyl)phenylphosphinate | — |
| CAS and formula | CAS 84434-11-7; formula C18H21O3P | — |
| Appearance | clear to pale yellow liquid | — |
| Assay and purity | confirmed against the quoted liquid photoinitiator grade | — |
| Viscosity, colour and cure response | controlled for the target resin, film thickness and UV process | — |
Photoinitiator TPO-L applications
Safety and handling
Keep sealed and protected from heat and strong light. Follow the storage and handling information for the quoted grade. Supply is subject to applicable requirements.
Common questions about photoinitiator TPO-L
What is photoinitiator TPO-L?
Photoinitiator TPO-L is a liquid Type I phosphinate photoinitiator used in UV-curable coatings, inks, adhesives and photopolymer resin systems. It is selected when a liquid physical form is useful in formulation.
Is TPO-L the same as TPO?
No. TPO-L and TPO are different phosphorous-containing photoinitiators. TPO-L is normally a liquid, while TPO is normally a solid powder, so solubility, dosing and cure performance should be evaluated separately.
Which formulations use TPO-L?
TPO-L can be considered for clear or pigmented UV coatings, inks, adhesives, electronics materials and 3D-printing resins. The required light source, resin chemistry, pigment load and cure depth should be included in the enquiry.
What specifications matter for TPO-L?
Identity, assay, appearance, colour, viscosity, water or volatile content and formulation cure response are common controls. Clear systems may need tighter colour limits than pigmented products.
What information is needed for a TPO-L quote?
Send the required grade, formulation, light source, viscosity or incorporation requirement, purity, quantity and delivery location. Packing and documentation are confirmed with the quotation.
