Introduction：Basic information about Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate CAS 84434-11-7, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate Basic information
| Product Name: | Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate |
| Synonyms: | 4-BENZORESORCINOL;4-BENZOYLRESORCINOL;JRcure TPO-L;PI-TPO-L;photo sensitizer TPO-L;Phenyl(2,4,6-trimethylbenzoyl)phosphinic acid ethyl ester;SYNSORB;ethyl phenyl(2,4,6-trimethylbenzoyl)phosphinate |
| CAS: | 84434-11-7 |
| MF: | C18H21O3P |
| MW: | 316.33 |
| EINECS: | 282-810-6 |
| Product Categories: | TPO-L |
| Mol File: | 84434-11-7.mol |
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Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate Chemical Properties
| Melting point | 144.5-147 °C(lit.) |
| Boiling point | 456.0±55.0 °C(Predicted) |
| density | 1.14 |
| vapor pressure | 0Pa at 20℃ |
| refractive index | 1.5610 |
| Fp | 184° |
| storage temp. | under inert gas (nitrogen or Argon) at 2-8°C |
| solubility | 71.8g/L in organic solvents at 20 ℃ |
| form | Oil to Thick Oil |
| color | Colourless to Yellow |
| Water Solubility | 35mg/L at 25℃ |
| Cosmetics Ingredients Functions | UV ABSORBER |
| InChI | InChI=1S/C18H21O3P/c1-5-21-22(20,16-9-7-6-8-10-16)18(19)17-14(3)11-13(2)12-15(17)4/h6-12H,5H2,1-4H3 |
| InChIKey | ZMDDERVSCYEKPQ-UHFFFAOYSA-N |
| SMILES | P(C1=CC=CC=C1)(C(=O)C1=C(C)C=C(C)C=C1C)(OCC)=O |
| LogP | 2.91 at 25℃ |
| CAS DataBase Reference | 84434-11-7(CAS DataBase Reference) |
Safety Information
| Hazard Codes | Xi |
| Risk Statements | 36 |
| Safety Statements | 26 |
| WGK Germany | 2 |
| RTECS | DJ0700000 |
| Storage Class | 10 - Combustible liquids |
| Hazard Classifications | Aquatic Chronic 2
Skin Sens. 1B |
Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate Usage And Synthesis
| Uses | Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate(Photoinitiator TPO-L) is a liquid photoinitiator for low yellowing, low odor formulations, commonly used in screen printing inks, lithographic printing inks, flexo printing inks, photoresists, varnishes, printing Plates and other fields. |
| Chemical Properties | 2,4,6-Trimethylbenzoylphenylphosphonic acid ethyl ester is yellow oily to thick oily liquid at room temperature and pressure, slightly soluble in water but easily soluble in organic solvents such as dimethyl sulfoxide, its structure has a large conjugate system, its absorption wavelengths of 299 and 366 nm, can be used to stimulate the ultraviolet polymerization reaction, in the process of UV polymerization curing process, it is able to trigger the polymerization of resin reaction. |
| Uses | P-Phenyl-P-(2,4,6-trimethylbenzoyl)-Phosphinic acid Ethyl Ester is a photoinitiator for UV curable coatings. |
| Definition | ChEBI: Ethyl (mesitylcarbonyl)phenylphosphinate is a member of benzoic acids. |
| Flammability and Explosibility | Non flammable |
| Synthesis | 0.1 mol phenylphosphinic acid and 100 mL chlorobenzene were added to the reaction vessel. 0.11 mol 2,4,6-trimethylbenzaldehyde was added dropwise under controlled temperature, followed by 2 hours of incubation at 100-120°C. After cooling, pH was adjusted to 4-6 with hydrochloric acid, then 0.13 g vanadium acetylacetonate was added as a catalyst. 0.15 mol of 35% hydrogen peroxide was added dropwise at a rate of 5-10 drops per minute, with the mixture insulated at 5-10°C. The reaction was monitored by TLC until completion.
The reaction mixture was diluted with 100 mL water, neutralized with saturated sodium bicarbonate, and the organic layer was separated and washed twice with water. Excess oxidant was reduced with aqueous sodium sulfite, and the organic layer was separated and washed again. The mixture was dehydrated with anhydrous sodium sulfate, filtered to remove the desiccant.
To the dehydrated organic layer, 0.11 mol sodium hydroxide was added, followed by dropwise addition of 0.55 mol diethyl sulfate at 60-80°C. After the reaction was complete, the mixture was adjusted to pH 8-10 with sodium hydroxide, washed with water, and the organic layer was separated. The organic layer was dried over anhydrous sodium sulfate, filtered, and the solvent was evaporated under reduced pressure to yield Ethyl phenyl(2,4,6-trimethylbenzoyl)phosphinate. |
Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate Preparation Products And Raw materials
| Raw materials | Diethyl sulfate-->Phenylphosphinic acid |
