Containers ethylene oxide

Storage tanks containing ethylene oxide are usually inerted with nitrogen. One plant used nitrogen made by cracking ammonia. The nitrogen contained traces of ammonia, which catalyzed an explosive decomposition of the ethylene oxide. Similar decompositions have been set off by traces of other bases, chlorides, and rust. 

Exception No. 2 Group C equipment shall be permitted to be used for atmospheres containing ethylene oxide, propylene oxide, and acrolein if such equipment is isolated in accordance with Section 501-5(a) by sealing all conduit /2 -in. size or larger. 

Steinle et al. [426] studied the primary biodegradation of different surfactants containing ethylene oxide, such as sulfates of linear primary alcohols, primary oxoalcohols, secondary alcohols, and primary and secondary alkyl-phenols, as well as sulfates of all these alcohols and alkylphenols with different degrees of ethoxylation. Their results confirm that primary linear alcohol sulfates are slightly more readily biodegradable than primary oxoalcohol sulfates and that secondary alcohol sulfates are also somewhat worse than the corresponding linear primary. 

The accidental contamination by trimethylamine of a container that contained ethylene oxide caused the cylinder to detonate eighteen hours after adding the... 

Weslig is a lignon sulphonate with a molecular weight of about 20,000 and also contains ethylene oxide. Ethylene oxide serves the purpose of reducing the frothing properties of the Weslig and improves the Weslig depression efficiency, in particular, for barite. 

Research Focus Synthesis of amphiphilic terpolymers containing ethylene oxide and (R)-3-hydroxybutyrate and hydrogels containing cyclodextrin. Originality Ongoing 3-year investigation. 

Orthoesters. As model experiments (1) phenyl Cellosolve and tetraphenyl orthocarbonate, and (2) hydroxyethyl benzoate and tetra-phenyl orthocarbonate reacted at 275°C. Diphenyl carbonate was obtained from the latter reaction but not from the former. The facts that the distillate from the latter reaction contained ethylene oxide and that diphenyl carbonate was formed quantitatively from the reaction of carboxylic acid and tetraphenyl orthocarbonate suggest the following reaction mechanism ... 

Figure 2. Synthetic procedure for the ferrocene-containing ethylene oxide polymers F and G.

Fig. 3.5. Structure of the ferrocene-containing ethylene oxide random block co-polymers. Reprinted with permission from [12]. American Chemical Society.

The ordered mesoporous silica (pore diameter 6 nm) was kindly provided by Dr. Ulla Junges and was prepared as described previously by G.D. Stucky et al. [15]. A commercial triblock copolymer (Pluronic-123 ) was used in the synthesis process. This polymer contained ethylene oxide/ propylene oxide/ ethylene oxide blocks, which formed a hexagonal mesophase in the synthesis mixture during the hydrolysis of the silicon alkoxides. 

TAD Tada, E. dos S., Loh, W., and Pessoa-Filho, P. de A., Phase equilibrium in aqueous two-phase systems containing ethylene oxide-propylene oxide block copolymers and dextran, Fluid Phase Equil, 218, 221, 2004. 

CONTAINS ETHYLENE OXIDE CANCER HAZARD AND REPRODUCTIVE HAZARD... 

In order to design new membrane materials with superior separation performance, low cost and feasible for massive production, the old work of Kulprathipanja can be considered as a proper tool [23]. He dispersed polyethylene glycol (PEG) in PDMS and improved the CO2 penneability. A similar idea led us to modify or blend existing commercial block polymers containing ethylene oxide (EO) units with poly(ethylene) glycol [24] and thus by a blending process it was possible to produce high C02-selective membrane materials with improved permeability. 

Li, S., Wang, Z., Zhang, C., Wang, M., Yuan, F., Wang, J., et al. (2013). Interfacially polymerized thin film composite membranes containing ethylene oxide groups for CO2 separation. Journal of Membrane Science, 436, 121—131. 

A number of cautionary points need to be made about pattern recognition. Firstly, some molecules are prone to cationization, that is the quasi-molecular ion may be [M+Me]+ rather than, or in addition to, [M+H]+, where Me is an alkali-metal ion. Sodium cationization is the most commonly encountered. Molecules containing ethylene oxide units (common amongst surfactants) are readily Na-cationized as are phthalate esters (plasticizers). 

Suppliers of sterilant gas mixtures containing ethylene oxide must register with the EPA. Each cylinder must be labeled with an EPA registration number. 

Ishida and co-workers [67] applied reactive pyrolysis in the presence of cobalt sulfate as a catalyst to the evaluation of ethylene oxide sequence up to E7 in copolymers on the basis of peak intensities of the cyclic ethers containing ethylene oxide unit fonnd on the pyrogram. Pyrolysis in the presence of cobalt sulfate gives a pyrogram in which cyclic ethers containing ethylene oxide (E) and oxymethylene units (E) are predominant. 

The method was applied to the determination of ethylene oxide sequences up to 7 units long in copolymers. On the basis of peak intensities of cyclic ethers containing ethylene oxide units in the programme, pyrolysis results were in reasonably good agreement with those obtained by hydrolysis-gas chromatography (Table 5.13). 

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