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重要文件

E24905

Sigma-Aldrich

4-(二甲氨基)苯甲酸乙酯

≥99%

同義詞:

Parbenate

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About This Item

線性公式:
(CH3)2NC6H4CO2C2H5
CAS號碼:
分子量::
193.24
Beilstein:
2210233
EC號碼:
MDL號碼:
分類程式碼代碼:
12352103
PubChem物質ID:
NACRES:
NA.23
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品質等級

化驗

≥99%

mp

63-66 °C (lit.)

SMILES 字串

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 密鑰

FZUGPQWGEGAKET-UHFFFAOYSA-N

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一般說明

4-二甲氨基苯甲酸乙酯(Et-PABA)是一种亲水性聚合物,可用作4-氨基苯甲酸的替代品。它主要用作光引发剂,具有强雌激素样活性而可用作防晒霜的紫外线吸收剂。[1]
4-(二甲氨基)苯甲酸乙酯是一种可见光光引发剂。[2]

應用

Et-PABA可与樟脑醌(CQ)用作共引发剂,形成用于制备牙科材料的光敏剂的自粘结复合物。[3][4][5]
可在电池封装应用中用作光引发剂。[6]

象形圖

Health hazardEnvironment

訊號詞

Danger

危險聲明

危險分類

Aquatic Chronic 2 - Repr. 1B

儲存類別代碼

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

水污染物質分類(WGK)

WGK 3

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

Eyeshields, Gloves, type N95 (US)


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分析證明 (COA)

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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
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
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)
A Peutzfeldt et al.
Acta odontologica Scandinavica, 47(4), 229-231 (1989-08-01)
The influence of the content of camphorquinone (CQ), amine (DABE), and inhibitor (MHQ) on the Wallace indentation hardness of light-curing polymers was investigated. The hardness was measured on disc-shaped specimens made from 50 bisphenol-A-glycidyl-dimethacrylate/triethyleneglycol-dimethacryla te-based monomers with various contents of

文章

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.

Questions

1–3 of 3 Questions  
  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  3. 안녕하세요 Ethyl 4-(dimethylamino)benzoate의 광게시제 파장을 알고싶어서 문의를 드립니다.

    1 answer
    1. The wavelength is not determined for this product. However, as per an external database, it is 310 nm. Please view the link below: https://www.photochemcad.com/databases/common-compounds/aromatic-hydrocarbons/ethyl-4-dimethylaminobenzoate.

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