Polyethylene glycols (PEGs), polypropylene glycols (PPGs), and polytetramethylene glycol come under the class of polyethers and are used in pharmaceuticals, cosmetics, lubricants, inks, and surfactants. Flavobacterium sp. and Pseudomonas sp. together associate and mineralize PEG completely under aerobic ...
This chapter discusses the reproductive and developmental toxicology of Ethylene Glycol (EG), which is a major industrial chemical, a compound poured into automobile radiators and sprayed onto airplane wings to help keep both from freezing in the winter. Its largest use is in the production of ...
The ample supply outweighed China’s robust import demand. Buying interest in China was strong for April and May arrival cargoes, on the back of healthy downstream margins for certain downstream markets such as SM, EO and monoethylene glycol (MEG). Ethylene buyers in China were...
copper sulfate pentahydrate (CuSO4·5H2O), ascorbic acid (AA), sodium hydroxide (NaOH), potassium hydroxide (KOH), sodium chloride (NaCl), ethanol (>99.7%), isopropanol (>99.7%), diethanolamine (DEA > 99%), ethylene glycol (EG > 99%) were purchased from Macklin. Polyvinylpyrrolid...
ICIS Ethylene Glycol analytics can recognise patterns in the commodity market & predict trends, allowing you to act quickly and confidently.
Key words: poly(ethylene glycol); phospholipase A2; enzyme kinetics; lipid-monolayers; edema The secretory phospholipases A2 (PLA2) (3.1.1.4) are lipolytic enzymes which catalyze the hydrolysis of the acyl ester bond at the sn-2 position of phos- phoglycerides.1,2) Their molecular masses...
In this experiment, the crosslinker was formed by a reaction between the isocyanate group of 1,6-diisocyanatohexan and the hydroxyl group of polyethylene glycol-400 (PEG-400), then the crosslinker reacted with the amidine and the hydroxyl group of ethylene glycol chitosan to form the network ...
It is well known that polyethylene oxide (PEO) crystallizes at about 55 °C8,9 and ionic as well as segmental mobility are limited to its molten (amorphous) state at elevated temperatures. This impedes its widespread application into the global market10. However, at elevated temperatures such...
3-methoxy-4-hydroxyphenylethyleneglycol (MHPG) CSF levels are decreased compared to controls and PD, while no differences were observed for MSA-P versus MSA-C (Abdo et al., 2004, 2007b). CSF levels of norepinephrine and the metabolite dihydroxyphenylglycol (DHPG) are reduced in MSA patients...
Figure 9.29.Structure of the repetitive unit in polyethylene glycol. PEOs are synthesized by polymerization of ethylene oxide using a metallic catalyst. They are available in a very wide molecular weight range, from 200 to 7.0×106g/mol, and the low-molecular-weight PEOs are called PEGs. They...