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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

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

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General description

Poly [(phenyl glycidyl ether)-co-formaldehyde] (Re2O7) is a strong oxidant and a highly selective Lewis acid catalyst. 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.

Application

Re2O7 acts as a catalyst in the heteroacylative dimerization of THF.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

Certificates of Analysis (COA)

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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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