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MilliporeSigma

196118

Sigma-Aldrich

2,2-Dimethoxy-2-phenylacetophenone

99%

Synonym(s):

α,α-Dimethoxy-α-phenylacetophenone, Benzil α,α-dimethyl acetal

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50 G
$81.00
250 G
$274.55

$81.00


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50 G
$81.00
250 G
$274.55

About This Item

Linear Formula:
C6H5COC(OCH3)2C6H5
CAS Number:
Molecular Weight:
256.30
Beilstein/REAXYS Number:
2054295
EC Number:
MDL number:
UNSPSC Code:
12162002
PubChem Substance ID:
NACRES:
NA.23

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$81.00


In StockDetails


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Quality Level

assay

99%

mp

67-70 °C (lit.)

SMILES string

COC(OC)(C(=O)c1ccccc1)c2ccccc2

InChI

1S/C16H16O3/c1-18-16(19-2,14-11-7-4-8-12-14)15(17)13-9-5-3-6-10-13/h3-12H,1-2H3

InChI key

KWVGIHKZDCUPEU-UHFFFAOYSA-N

Gene Information

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This Item
479314B8703172006
assay

99%

assay

99%

assay

96%

assay

97%

mp

67-70 °C (lit.)

mp

47.5-48.5 °C (lit.)

mp

47.5-48.5 °C (lit.)

mp

59-61 °C (lit.)

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

100

Gene Information

human ... ACHE(43), BCHE(590), CES1(1066)

Gene Information

-

Gene Information

-

Gene Information

-

Application

2,2-Dimethoxy-2-phenylacetophenone (DMPA) can be used as a photoinitiator:
  • For the photopolymerization of methacrylate monomers in thick sections(~2mm).
  • In the preparation of UV-curing silicone rubber with excellent mechanical properties and thermal stability via thiol-ene reaction.
It can also be used as a starting material to prepare a water-soluble supramolecular-structured photoinitiator which is more efficient than DMPA.

pictograms

Health hazardExclamation mark

signalword

Warning

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 3 - STOT RE 2

target_organs

oral cavity

Storage Class

11 - Combustible Solids

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves


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Questions

1–4 of 4 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

      Helpful?

  3. What is the density of 196118-50G, specifically 2,2-DIMETHOXY-2-PHENYLACETOPHENONE, 99%?

    1 answer
    1. The density of 2,2-DIMETHOXY-2-PHENYLACETOPHENONE, 99% (196118-50G) is 1.1320 g/cm³.

      Helpful?

  4. What UV wavelength, amps, power, frequency, etc can I use with this?

    1 answer
    1. The UV wavelength, amps, power, and frequency are unrecorded for this product.

      For photoinitiation to proceed efficiently, the absorption bands of the photoinitiator must overlap with the emission
      spectrum of the source and there must be minimal competing absorption by the components of the formulation
      at the wavelengths corresponding to photoinitiator excitation. The following research article describes an application using this product in the photopolymerization of methacrylate monomers in thick sections which may be helpful.

      https://www.researchgate.net/publication/264681050_Efficiency_of_22-Dimethoxy-2-phenylacetophenone_for_the_Photopolymerization_of_Methacrylate_Monomers_in_Thick_Sections"

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