cas 4437-01-8, HEPTAETHYLENE GLYCOL MONOMETHYL ETHER

Articles about 4437-01-8Total 3 be found

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Quantification of grafted poly(ethylene glycol)-silanes on silicon by time-of-flight secondary ion mass spectrometry
Silicon grafted monodisperse poly(ethylene glycol) (PEG) silanes with various PEG chain lengths and mixtures of these were systematically analyzed with static time-of-flight secondary ion mass spectrometry (TOF-SIMS). The mass spectra show differences in the various relative signal intensities, an observation that was used to elucidate important aspects of the grafting process. The relationship between PEG-silane fragment ion abundances and Si+ ion abundances were used to (i) qualitatively describe layer thicknesses of grafted mixtures of PEG-silanes on silicon, (ii) construct a calibration curve from which PEG chain length (or molecular mass) can be determined and (iii) quantitatively determine surface mixture compositions of grafted monodisperse PEG-silanes of different chain lengths (3, 7 and 11 PEG units). The results suggest that discrimination does take place in the adsorption process. The PEG-silane with the shorter PEG chain is discriminated for mixtures containing PEG3-silane, whereas the PEG-silane with the longer PEG chain is discriminated in PEG7/PEG11-silane mixtures. The origin of this difference in adsorption behavior is not well understood. Aspects of the grafting process and the TOF-SIMS analyses are discussed. Copyrigh
Norrman,Papra,Kamounah,Gadegaard,Larsen
p. 699 - 708
(2007/10/03)

Tetraiodopyrrole derivatives as contrast medium and as antiseptic
The present invention refers to new contrast media particularly suited for X-ray diagnostic procedures of the human and animal body and also to the new compounds of general formulae (I) and (II). STR1
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(2008/06/13)

Hydrophilic Lipids
The new triesters of glycerol 1-8 with different oligoethylene glycol carboxylic acids ("hydrophilic lipids") have been synthesized and their complexation with alkali and alkaline earth metal cations has been investigated.
Heimann, Ulrich,Voegtle, Fritz
p. 858 - 862
(2007/10/02)

Chemical Properties

Boiling Point: 416 °C at 760 mmHg
Flash Point:205.4 °C
Density: 1.069 g/cm³
Storage Temp.:-20°C
Vapor Pressure: 1.16E-08mmHg at 25°C
Refractive Index: 1.448
PKA: 14.36±0.10(Predicted)
PSA: 84.84000
LogP: -0.27530

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Chemical Properties

Boiling Point: 416 °C at 760 mmHg

Flash Point:205.4 °C

Density: 1.069 g/cm³

Storage Temp.:-20°C

Vapor Pressure: 1.16E-08mmHg at 25°C

Refractive Index: 1.448

PKA: 14.36±0.10(Predicted)

PSA: 84.84000

LogP: -0.27530

Global suppliers and manufacturers of 4437-01-8total 34 suppliers on LookChem

Article Database

4437-01-8

Articles about 4437-01-8Total 3 be found

More Articles about upstream products of 4437-01-8

More Articles about downstream products of 4437-01-8

Chemical Properties

Boiling Point: 416 °C at 760 mmHg

Flash Point:205.4 °C

Density: 1.069 g/cm3

Storage Temp.:-20°C

Vapor Pressure: 1.16E-08mmHg at 25°C

Refractive Index: 1.448

PKA: 14.36±0.10(Predicted)

PSA: 84.84000

LogP: -0.27530

Global suppliers and manufacturers of 4437-01-8total 34 suppliers on LookChem

Density: 1.069 g/cm³