ChemicalBook > CAS DataBase List > Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate

Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate

Uses

Product Name: Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate
CAS No.: 84434-11-7
Chemical Name: Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate
Synonyms: TPO-L;BENZOPHENONE-1;Photoinitiator TPO-L;ethyl trimethylbenzoyl phenylphosphinate;ethyl phenyl(2,4,6-trimethylbenzoyl)phosphinate;IHT-PI TPO-L;4-BENZORESORCINOL;2,4,6-Trimethylbenzoyldi-Phenylphosphinate;2,4,6-TRIMETHYLBENZOYLPHENYLPHOSPHINIC ACID ETHYL ESTER;SYNSORB
CBNumber: CB9855469
Molecular Formula: C18H21O3P
Formula Weight: 316.33
MOL File: 84434-11-7.mol

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Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate Property

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
Flash point:: 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℃
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)

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Safety

Hazard Codes: Xi
Risk Statements: 36
Safety Statements: 26
WGK Germany: 2
RTECS: DJ0700000

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

TCI Chemical

Product number: E0908
Product name: Ethyl Phenyl(2,4,6-trimethylbenzoyl)phosphinate
Purity: min. 95.0 %
Packaging: 25G
Price: $60
Updated: 2025/07/31

TCI Chemical

Product number: E0908
Product name: Ethyl Phenyl(2,4,6-trimethylbenzoyl)phosphinate
Purity: min. 95.0 %
Packaging: 100G
Price: $149
Updated: 2025/07/31

TRC

Product number: P337600
Product name: p-Phenyl-p-(2,4,6-trimethylbenzoyl)phosphinicAcidEthylEster
Packaging: 100g
Price: $545
Updated: 2021/12/16

Ark Pharm

Product number: AK-50637
Product name: Ethylphenyl(2,4,6-trimethylbenzoyl)phosphinate
Purity: 97%
Packaging: 10g
Price: $8
Updated: 2021/12/16

Oakwood

Product number: 079183
Product name: Ethyl (2,4,6-trimethylbenzoyl)phenylphosphinate
Packaging: 1g
Price: $10
Updated: 2021/12/16

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Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate Chemical Properties,Usage,Production

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

Preparation Products

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View Lastest Price from Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate manufacturers

HANGZHOU HAILAN CHEMICAL CO.,LTD.

Product: Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate 84434-11-7
Price: US $0.00/kg
Min. Order: 1kg
Purity: 99%min
Supply Ability: 20tons
Release date: 2025-09-02

WUHAN FORTUNA CHEMICAL CO., LTD

Product: Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate/TPO-L 84434-11-7
Price: US $0.00-0.00/kg
Min. Order: 1kg
Purity: 98%min
Supply Ability: 10 tons
Release date: 2025-04-23

Hebei Chuanghai Biotechnology Co., Ltd

Product: Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate 84434-11-7
Price: US $10.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 10 mt
Release date: 2024-11-25

84434-11-7, Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinateRelated Search:

ETHYLENE OXIDE NITRIC OXIDE Boron oxide Amino tris(methylene phosphonic acid) Iron oxide Ethyl acetate 2-Methyl-4'-(methylthio)-2-morpholinopropiophenone Ethyl propionate Ethyl vanillin Magnesium oxide Ethylbenzene Ethyl acrylate Ethyl formate Zinc oxide Ethanol Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide Triethyl phosphonoacetate Rutile

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

SPEEDCURE TPO-L

2,4,6-trimethylbenzoylethoxyphenylphosphine oxide

2,4,6-TRIMETHYLBENZOYLPHENYLPHOSPHINIC ACID ETHYL ESTER

DIHYDROXYBENZOPHENONE(2,4-)

ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate

BENZOPHENONE-1

SYNSORBBP-1,2,4-DIHYDROXYBENZOPHENONE

IHT-PI TPO-L

Ethoxyphenyl(2,4,6-trimethylbenzoyl)phosphine oxide

Lucirin TPOL

2,4,6-trimethyl-benzoyl-ethoxyphenyl-

Einecs 282-810-6

Photoinitiator TPO-L

TPO-L

p-Phenyl-p-(2,4,6-triMethylbenzoyl)phosphinic Acid Ethyl Ester

OMINIRAD TPO-L(former LUCIRIN TPO-L)

HRcure-TPO-L

2,4,6-Trimethylbenzoyldi-Phenylphosphinate

Phosphinic acid, phenyl(2,4,6-trimethylbenzoyl)-, ethyl ester

Phosphinic acid, P-phenyl-P-(2,4,6-trimethylbenzoyl)-,ethyl ester

Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate(TPO-L)

YF-PI TPO-L

ethyl (2,4,6-trimethylbenzoy

Ethyl(2,4,6-trimethylbenzoyl)phenylphosphinChemicalbookate

Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate ISO 9001：2015 REACH

PHOTO INITIATOR TRUELICHT TPO-L

ethyl trimethylbenzoyl phenylphosphinate

Ethyl(2,4,6-trimethylbenzoyl)phenylphosphChemicalbookinate

Photoinitiator TPO-L Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate

Ethyl(2,4,6-trimethylbenzoyl)phenylphosph

D-Tartaric acid 147-71-7

Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate TPO-L Photoinitiator TPO-L

Sinocure? TPO-L / Irgacure TPO-L / Omnirad TPO-L

Ethyl(2,4,6-trimethylbenzoyl)pheChemicalbooknylphosphinate

Ethyl(2,4,6-trimethylbenzoyl)phenylphospChemicalbookhinate

2,4,6-trimethylbenzoylphosphonic acid ethyl ester

APi-TPO-L

2.4.6-Trimethylbenzoylethoxyphenylphosphine

Omnirad TPO-L

Ethyl mesitylcarbonyl(phenyl)phosphinate

2,4,6-Trimethylbenzoylphosphonate

Acylphosphineoxides（1110）

Ethyl?Phenyl(2,4,6-trimethylbenzoyl)phosphinate/TPO-L

Ethyl phenyl(2,4,6-trimethylbenzoyl)phosphinate 94.5%

Ethyl (2,4,6-trimethylbenzoyl) phenylphosphite

Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate?-4

84434-11-7

C18H21O3P

Organic Building Blocks

Ketones