Xylene Xylene

Unique adsorption selectivities are employed in the separation of Cg aromatic isomers, a classical problem that caimot be easily solved by distillation, crystallisation, or solvent extraction (10). Although -xylene [106-42-3] can be separated by crystallisation, its recovery is limited because of the formation of eutectic with / -xylene [108-58-3]. However, either -xylene, / -xylene, (9-xylene [95-47-6] or ethylbensene [100-41-4] can be extracted selectively by suitable modification of seoUtic adsorbents. 

Quantity Benzene Toluene Isopropyl- benzene Ethyl- benzene P- Xylene m- o-Xylene Xylene Tetra- line... 

Xylene, similar to toluene, acts as a neurotoxin. Most exposure results from inhalation of fumes from products that contain xylene. Xylene concentrations in the air of 100 ppm or less can irritate the nose, throat, and eyes. As concentrations increase, xylene produces headaches, dizziness, and disorientation. Exposures at high concentrations for an extended time may result in paralysis or death. Xylene may cause liver and kidney damage. 

Aromax process -for xylenes [XYLENES AND ETHYLBENZENE] (Supplement)... 

The reagent is a mixture of phenol, boron trifluoride-phenol complex, and xylene. Xylene is used as an inert reaction medium. The standard composition of the mixture (by volume) is listed below. 

UOP Xylene, mixed Mixed xylenes Xylene isomerization of mixture depleted in one or more isomers back to equilibrium 50 1998... 

The experimental method used in TEOM for diffusion measurements in zeolites is similar to the uptake and chromatographic methods (i.e., a step change or a pulse injection in the feed is made and the response curve is recorded). It is recommended to operate with dilute systems and low zeolite loadings. For an isothermal system when the uptake rate is influenced by intracrystalline diffusion, with only a small concentration gradient in the adsorbed phase (constant diffusivity), solutions of the transient diffusion equation for various geometries have been given (ii). Adsorption and diffusion of o-xylene, / -xylene, and toluene in HZSM-5 were found to be described well by a one-dimensional model for diffusion in a slab geometry, represented by Eq. (7) (72) ... 

Petroleum distillates, aromatic Xylenes Xylene range solvents... 

Isomeric Xylenes.— Xylene has been shown to have the constitution of di-methyl benzene, but as we should expect, being a di-sub-stituted benzene three isomeric hydrocarbons are known all of which... 

Ethylbenzene, too, may be isomerized to xylenes. Xylenes are normally recovered from a mixed aromatics stream by extraction with sulfolane or a glycol. 

Slides were immersed for 5 min in each of the following xylene, xylene, 100% alcohol, 100% alcohol, 95% alcohol, and 70% alcohol. They were dipped in distilled water and stained in 0.5% cresyl violet for 15-30 min. They were differentiated in water for 3-5 min and then dehydrated through 70% alcohol, 95% alcohol, 100% alcohol, and 100% alcohol. They were then put in xylene and cover-slipped. 

Beilstein Handbook Reference) AI3-02209-X Benzene, dimethyl- BRN 1901563 Caswell No. W6 CCRIS 903 Dimethylbenzene EINECS 215-535-7 ERA Pesticide Chemical Code 086802 HSDB 4500 Ksylen Methyltoluene NCI-C55232 RCRA waste number U239 Socal aquatic solvent 3501 UN 1307 Violet 3 Xiloli Xylene Xylene (mixed isomers) Xylenen Xylenes Xylol Xylole. Aromatic compound. commercial mixture of 3 isomers... 

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