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406775

Sigma-Aldrich

Poly[(phenyl glycidyl ether)-co-formaldehyde]

average Mn ~345

Synonym(s):

Phenol-formaldehyde polymer glycidyl ether, Phenol-formaldehyde polymer, oxiranylmethyl ether

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About This Item

CAS Number:
28064-14-4
MDL number:
MFCD00197918
UNSPSC Code:
12162002
PubChem Substance ID:
24865405
NACRES:
NA.23
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form

liquid

specific activity

2.2 epoxide groups per molecule

mol wt

average Mn ~345

refractive index

n20/D 1.589

viscosity

11-17 poise(lit.)

density

1.227 g/mL at 25 °C (lit.)

SMILES string

[H]C([H])=O.C1OC1COc2ccccc2

InChI

1S/C9H10O2.CH2O/c1-2-4-8(5-3-1)10-6-9-7-11-9;1-2/h1-5,9H,6-7H2;1H2

InChI key

HOHFCSNKEFBITP-UHFFFAOYSA-N

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General description

Poly [(phenyl glycidyl ether)-co-formaldehyde] (Re2O7) is a strong oxidant and a highly selective Lewis acid catalyst.[1] The structure is constituted of strongly distorted ReO4 octahedra and nearly regular ReO4 tetrahedra which are connected through corners to form polymeric double layers in the ac plane.[2]

Application

Re2O7 acts as a catalyst in the heteroacylative dimerization of THF.[1]Adhesives, structural and electrical laminates and coatings and castings for high temperature service.

Features and Benefits

Good chemical resistance at high temperatures. Substitutes for Bisphenol A and phenolic epoxy resins.

Physical form

Oligomeric epoxide.

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
15814PR
00426BF

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Crystal structure of rhenium (VII) oxide
Krebs B, et al.
Inorganic Chemistry, 8(3), 436-443 (1969)
T Suami et al.
Carbohydrate research, 53(2), 239-246 (1977-02-01)
The aminocyclitol antibiotic neamine has been modified chemically by removing one or two hydroxyl groups from the 2-deoxystreptamine moiety to give 5- and 6- deoxyneamines (5 and 10), as well as 5,6-dideoxyneamine (15). Their antimicrobial activities were determined against several

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  1. 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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  2. 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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