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E24905

Sigma-Aldrich

Ethyl 4-(dimethylamino)benzoate

≥99%

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Synonym(s):
Parbenate
Linear Formula:
(CH3)2NC6H4CO2C2H5
CAS Number:
Molecular Weight:
193.24
Beilstein/REAXYS Number:
2210233
EC Number:
MDL number:
UNSPSC Code:
12352103
PubChem Substance ID:
NACRES:
NA.23

Quality Level

assay

≥99%

mp

63-66 °C (lit.)

SMILES string

CCOC(=O)c1ccc(cc1)N(C)C

InChI

1S/C11H15NO2/c1-4-14-11(13)9-5-7-10(8-6-9)12(2)3/h5-8H,4H2,1-3H3

InChI key

FZUGPQWGEGAKET-UHFFFAOYSA-N

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General description

Ethyl 4-(dimethylamino)benzoate (Et-PABA) is a hydrophilic polymer, which can also be used as a derivate of 4-aminobenzoate. It is majorly used as a photo-initiator with a strong estrogenic activity, which finds application as an ultraviolet filter in sunscreens.
Ethyl 4-(dimethylamino)benzoate is a photoinitiator in visible light system.

Application

Can be used as a photoinititator in cell encapsulation applications.
Et-PABA is used as a co-initiator with camphorquinone (CQ) to form a self-adhesive composite for the fabrication of photosensitizers in dental materials.

pictograms

Health hazardEnvironment

signalword

Danger

Hazard Classifications

Aquatic Chronic 2 - Repr. 1B

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


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S J Bryant et al.
Journal of biomaterials science. Polymer edition, 11(5), 439-457 (2000-07-15)
This work investigates the cytocompatibility of several photoinitiating systems for potential cell encapsulation applications. Both UV and visible light initiating schemes were examined. The UV photoinitiators included 2,2-dimethoxy-2-phenylacetophenone (Irgacure 651), 1-hydroxycyclohexyl phenyl ketone (Irgacure 184), 2-methyl-1-[4-(methylthio) phenyl]-2-(4-morpholinyl)-1-propanone (Irgacure 907), and
Fabrício Aulo Ogliari et al.
Journal of dentistry, 35(7), 583-587 (2007-06-02)
The aim of this study was to evaluate the influence of an onium salt in the polymerization kinetics of a dental adhesive model resin. A monomer mixture, based on Bis-GMA, TEGDMA and HEMA, was used as a model dental adhesive
Effect of photoinitiator combinations on hardness, depth of cure, and color of model resin composites.
Salgado VE, et al.
Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [Et al.], 27, S41-S48 (2015)
Effect of adhesive-monomers and photoinitiator on C=C conversion and color stability of model self-adhesive flowable composites.
Monteiro AA, et al.
International Journal of Adhesion and Adhesives, 87, 119-123 (2018)
Long-term bonding efficacy of adhesives containing benzodioxioles as alternative co-initiators.
LIMA GDS, et al.
Brazilian Oral Research, 32 (2018)

Articles

With dentists placing nearly 100 million dental fillings into patients′ teeth annually in the U.S. alone, polymeric composite restoratives account for a very large share of the biomaterials market.

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