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Key Documents

E24905

Sigma-Aldrich

Ethyl 4-(dimethylamino)benzoate

≥99%

Synonym(s):

Parbenate

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About This Item

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

Storage Class

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


Certificates of Analysis (COA)

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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)
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
H Lygre et al.
European journal of oral sciences, 107(5), 378-383 (1999-10-09)
Results are reported from a study on the in vitro separation and identification of leachables from three different polymer-based dental filling materials by using a combined method of gas chromatography and mass spectrometry. The median number of separable organic leachables
Mario Seiss et al.
Archives of toxicology, 83(12), 1109-1115 (2009-09-23)
This study investigated the leaching of ingredients from several commercial dental composite resins cured with LED, and immersed in methanol or water for 24 h, respectively. The composites used were: Admira Dentin (VOCO), Artemis Schmelz (Enamel) (Ivoclar Vivadent), Els extra
Mihaela Roxana Cimpan et al.
Clinical oral investigations, 9(3), 168-172 (2005-05-06)
4-N,N-Dimethyl amino benzoic acid ethylester (DMABEE), a leachable lipophilic component of polymer-based dental-filling materials, has been shown to interact with cell membrane phospholipids, such as phosphatidylcholine and phosphatidylserine (PS). One marker of cellular death by apoptosis is the change in

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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