Factbites
 Where results make sense
About us   |   Why use us?   |   Reviews   |   PR   |   Contact us  

Topic: Aromatic hydrocarbon


Related Topics

  
  Products including Resinates, Ink Resins, Rosin Resins, Adhesive Resins, Aromatic and Aliphatic Hydrocarbons, ...
Aliphatic hydrocarbon resins are a very diverse family of resins.
Aromatic hydrocarbon resins are the most soluble / compatible of all the unmodified hydrocarbon resins.
Phenolated hydrocarbon resins are high softening point, highly compatible hydrocarbon resins which find use in the rubber industry as process additives and curing aids.
www.resinall.com /products.html   (549 words)

  
 Welcome to Texas Oil Tech Labortories, Inc.
Aromatic Content and Polynuclear Aromatic Content of Diesel Fuels and Aviation Turbine Fuels by Supercritical Fluid Chromatography
Aromatic Content of Mineral Spirits by GC Aromatic Hydrocarbon Types in Aviation Fuels and Petroleum Distillates
Aromatic Types in Gas Oil Fractions by GC-MS Aromatics and Non-aromatics Fractions by Elution Chromatography
www.tol-lp.com /html/A.htm   (229 words)

  
  ATSDR - ToxFAQs™: Polycyclic Aromatic Hydrocarbons (PAHs)
Exposure to polycyclic aromatic hydrocarbons usually occurs by breathing air contaminated by wild fires or coal tar, or by eating foods that have been grilled.
Polycyclic aromatic hydrocarbons (PAHs) are a group of over 100 different chemicals that are formed during the incomplete burning of coal, oil and gas, garbage, or other organic substances like tobacco or charbroiled meat.
Mice that were fed high levels of one PAH during pregnancy had difficulty reproducing and so did their offspring.
www.atsdr.cdc.gov /tfacts69.html   (1007 words)

  
  Aromatic hydrocarbon Summary
Derived chiefly from petroleum and coal tar, aromatic hydrocarbons tend to be reactive.
The so-called aromatic spices and resins such as frankincense, camphor, turpentine, were shown in the 1880s not to be chemically similar to benzene, but rather to be derivatives of a family of ten-carbon compounds, called terpenes.
The configuration of six carbon atoms in aromatic compounds is known as a benzene ring, after the simplest possible aromatic hydrocarbon, benzene.
www.bookrags.com /Aromatic_hydrocarbon   (759 words)

  
  aromatic compound - HighBeam Encyclopedia
aromatic compound any of a large class of compounds that includes benzene and compounds that resemble benzene in certain of their chemical properties.
For this reason, the bonds in the aromatic ring are less reactive than ordinary double bonds; aromatic compounds tend to undergo ionic substitution (e.g., replacement of a hydrogen bonded to the ring with some other group) rather than addition (which would involve breaking one of the resonant bonds in the ring).
Synergistic embryotoxicity of polycyclic aromatic hydrocarbon aryl hydrocarbon receptor agonists with cytochrome p4501a inhibitors in fundulus heteroclitus.(Research)
www.encyclopedia.com /doc/1E1-aromatic.html   (905 words)

  
 Aromatic hydrocarbon - Article from FactBug.org - the fast Wikipedia mirror site
An aromatic hydrocarbon (abbreviated as AH), or arene is a hydrocarbon, the molecular structure of which incorporates one or more planar sets of six carbon atoms that are connected by delocalised electrons numbering the same as if they consisted of alternating single and double covalent bonds.
After the simplest possible aromatic hydrocarbon, benzene, such a configuration of six carbon atoms is known as a benzene ring.
Aromatic hydrocarbons were so named due to their generally intense smell, long before their molecular structure was understood.
www.factbug.org /cgi-bin/a.cgi?a=1313   (757 words)

  
 Aromatic Hydrocarbon 6 Jar
Spectroscopy and Astrophysics University of Allahabad October An aromatic hydrocarbon molecule containing a benzene ring with two methyl side chains formula C H. Xylene is an excellent solvent especially for aromatic solids such as scent asphaltic materials.
The bezene ring is a cyclic hydrocarbon of C H. At each corner of the hexagon there is cheap assumed to be a carbon atom.
An aromatic hydrocarbon molecule containing a benzene ring with two methyl side chains formula C H. Xylene is an excellent solvent especially for aromatic solids such as asphaltic materials.
www.dnmfilms.com /aromatic-hydrocarbon-6-ring.htm   (412 words)

  
 aromatic hydrocarbon - OneLook Dictionary Search
We found 7 dictionaries with English definitions that include the word aromatic hydrocarbon:
Tip: Click on the first link on a line below to go directly to a page where "aromatic hydrocarbon" is defined.
Phrases that include aromatic hydrocarbon: polycylclic aromatic hydrocarbon
www.onelook.com /?w=aromatic+hydrocarbon&ls=a   (127 words)

  
 Dioxin-induced CYP1A1 transcription in vivo: the aromatic hydrocarbon receptor mediates transactivation, ...
Dioxin-induced CYP1A1 transcription in vivo: the aromatic hydrocarbon receptor mediates transactivation, enhancer-promoter communication, and changes in chromatin structure -- Ko et al.
Lee, K.-H., Park, J.-W., Chun, Y.-S. Non-hypoxic transcriptional activation of the aryl hydrocarbon receptor nuclear translocator in concert with a novel hypoxia-inducible factor-1alpha isoform.
Sinal, C. J., Bend, J. Aryl Hydrocarbon Receptor-Dependent Induction of Cyp1a1 by Bilirubin in Mouse Hepatoma Hepa 1c1c7 Cells.
mcb.asm.org /cgi/content/abstract/16/1/430   (983 words)

  
 D6591-06 Standard Test Method for Determination of Aromatic Hydrocarbon Types in Middle Distillates-High Performance ...
1.4 By convention, this standard defines the aromatic hydrocarbon types on the basis of their elution characteristics from the specified liquid chromatography column relative to model aromatic compounds.
Quantification is by external calibration using a single aromatic compound, which may or may not be representative of the aromatics in the sample, for each aromatic hydrocarbon type.
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
www.astm.org /DATABASE.CART/REDLINE_PAGES/D6591.htm   (402 words)

  
 A sensitive color ELISA for detecting polycyclic aromatic hydrocarbon-DNA adducts in human tissues - Publication - RTI ...
A sensitive color ELISA for detecting polycyclic aromatic hydrocarbon-DNA adducts in human tissues - Publication - RTI International
A sensitive color ELISA for detecting polycyclic aromatic hydrocarbon-DNA adducts in human tissues.
RTI International is a trade name of Research Triangle Institute.
www.rti.org /abstract.cfm?pubid=4750   (265 words)

  
 Immunohistochemical Quantitation of Polycyclic Aromatic Hydrocarbon-DNA Adducts in Human Lymphocytes -- Motykiewicz et ...
Immunohistochemical Quantitation of Polycyclic Aromatic Hydrocarbon-DNA Adducts in Human Lymphocytes -- Motykiewicz et al.
Biomarkers of exposure to polycyclic aromatic hydrocarbons from environmental air pollution
The relationship between genetic damage from polycyclic aromatic hydrocarbons in breast tissue and breast cancer
cancerres.aacrjournals.org /cgi/content/abstract/55/7/1417   (628 words)

  
 Aromatic Dipped Naptha Hydrocarbon Msds
Cas Name AROMATIC HYDROCARBON SOLVENT NAPTHA by Wt Other REC Limits PPM OSHA Cas Name AROMATIC HYDROCARBON SOLVENT NAPTHA by Wt Other REC Limits PPM OSHA Cas Name AROMATIC HYDROCARBON SOLVENT NAPTHA by Wt Other REC Limits PPM OSHA analysis Independent Analysis MSDS.
TLV PPM Ingred Name AROMATIC HYDROCARBON SOLVENT NAPTHA CAS Other REC Limits PPM OSHA July jar FIELD TEST PLAN FOR KATEC AEROSOLV TECHNOLOGY INTRODUCTION Katec Inc. July FIELD TEST PLAN FOR KATEC AEROSOLV TECHNOLOGY INTRODUCTION Katec Inc..
Cas Name AROMATIC HYDROCARBON SOLVENT NAPTHA by Wt Other REC Limits PPM OSHA.
www.kiwisfriends.com /aromatic-150-naptha-hydrocarbon-msds.htm   (249 words)

  
 Selective enumeration of aromatic and aliphatic hydrocarbon degrading bacteria by a most probable number procedure
The aromatic compounds, especially the polycyclic aromatic hydrocarbons (PAHs), are of intermediate biodegradability, but these are of most concern owing to their toxicity and tendency to bioaccumulate.
It is possible to modify the standard enumeration methods for hydrocarbon degraders to obtain separate estimates of the alkane and aromatic degrading populations.
Several pure cultures of hydrocarbon and nonhydrocarbon degrading bacteria were used to determine the accuracy of the hydrocarbon degrader MPN procedures by comparing population estimates obtained for these cultures with the alkane, PAM, and total hydrocarbon degrader MPN with those obtained by HPC.
www.bioremediationgroup.org /BioReferences/Tier1Papers/selective.htm   (5227 words)

  
 Fractional distillation pressure control for separation of aromatic alkylation product - Patent 4038334
Aromatic hydrocarbons, benzene, toluene, the xylenes and/or ethylbenzene, are alkylated with a normally gaseous olefinic feed stream of ethylene, propylene, butylene and/or isobutylene.
Since the advent of the aromatic alkylation process, catalyst development appears to have culminated in a preference for a catalytic composite comprising boron halide-modified refractory inorganic oxide, and particularly a boron trifluoride-modified alumina.
The invention herein described is intended for utilization in an aromatic alkylation process, and is intended to afford control of the pressure within the fractional distillation column which initially recovers the alkylaromatic product from unreacted aromatic hydrocarbons and the minor quantity of normally gaseous paraffinic contaminants.
www.freepatentsonline.com /4038334.html   (6736 words)

  
 Class Definition for Class 585 - CHEMISTRY OF HYDROCARBON COMPOUNDS
For example, when one claim is to a solid resinous hydrocarbon polymer and another is to a liquid hydrocarbon polymer, the patent is classified as an original in the class which provides for the solid resinous polymer.
If a synthesis process leads to two products, a hydrocarbon and a nonhydrocarbon, both of which are intended to be recovered from the process, the patent is classified as an original in the class providing for the nonhydrocarbon synthesis and cross-referenced to Class 585 when the hydrocarbon synthesis is proper for this class.
Subject matter where the unsaturated hydrocarbon which is hydrogenated is an impurity or contaminant in a desired hydrocarbon, a substantial amount of which desired hydrocarbon is present in the feedstock to the process.
www.uspto.gov /go/classification/uspc585/defs585.htm   (5630 words)

  
 Aromatic Hydrocarbons   (Site not responding. Last check: )
An aromatic hydrocarbon is a cyclic compound where all the atoms in the ring(s) are sp2 having a free "p" orbital to provide a pipeline or "conduit" in which Pi electrons can travel through being distributed throughout the molecule.
Benzene is the most commonly known aromatic hydrocarbon having six Pi electrons with all six carbons sp2 and therefore the ring is planar (a necessary condition).
In discussing electrophilic aromatic substitutions on Benzene, it was apparent that all six carbon atoms were equivalent in their ability to be the center of the substitution since the electron density exhibited by the Pi electron system was evenly distributed over the entire ring.
members.aol.com /logan20/aromatic.html   (2608 words)

  
 Hydrogenated block copolymer compositions - Patent 4772657
The composition according to claim 7, wherein the polymer block A composed mainly of a vinyl-substituted aromatic hydrocarbon, which is one component of the hydrogenated block copolymer (a), is one composed mainly of styrene.
In the present invention, the hydrogenated block copolymer used as the component (a) is obtained by hydrogenating a block copolymer comprising at least two polymer blocks A composed mainly of a vinyl-substituted aromatic hydrocarbon and at least one polymer block B composed mainly of a conjugated diene.
% of hydrogenated conjugated diene with a vinyl-substituted aromatic hydrocarbon.
www.freepatentsonline.com /4772657.html   (5214 words)

  
 Turner Designs Hydrocarbon Instruments, Inc.   (Site not responding. Last check: )
Turner Designs Hydrocarbon Instruments, Inc. is the worldwide leader in the application of field portable, laboratory and on-line continuous process monitors for measuring hydrocarbons in water.
Hydrocarbons are detected in a stream of water which falls through an open chamber; the stream does not contact, dirty or foul the optical windows used for oil in water monitoring.
Hydrocarbons are detected in a stream of water which falls through an open chamber; the stream does not contact, dirty or foul the optical windows used for monitoring aromatic hydrocarbons.
www.environmental-expert.com /technology/turnerdesigns/turnerdesigns.htm   (5705 words)

  
 eMedicine - Toxicity, Hydrocarbons : Article by Michael D Levine, MD
Hydrocarbons can be classified as being aliphatic, in which the carbon moieties are arranged in a linear or branched chain, or aromatic, in which the carbon moieties are arranged in a ring.
Halogenated hydrocarbons are a subgroup of aromatic hydrocarbons, in which one of the hydrogen molecules is substituted by a halogen group.
The chemical properties of the individual hydrocarbon determine the specific toxicity, while the dose and route of ingestion affect which organs are exposed to the toxicity.
www.emedicine.com /emerg/topic873.htm   (3119 words)

  
 Compositional Indicies of Polycyclic Aromatic Hydrocarbon Sources off San Diego, California
The objectives of this study were to identify the possible origins or sources of hydrocarbons in the coastal region off San Diego and to evaluate the extent of organic contamination exerted by the point and nonpoint inputs.
Polycyclic aromatic hydrocarbons in Washington coastal sediments: an evaluation of atmospheric and riverine routes of introduction.
Hydrocarbons in the Mediterranean Sea: their occurrence and fate in the sediment and in the water column, as dissolved and associated with small and large size particulates.
www.sccwrp.org /pubs/annrpt/94-95/art-04.htm   (8240 words)

  
 Transition metal-containing catalyst - PatentStorm   (Site not responding. Last check: )
Disclosed are a process for producing aromatic hydrocarbon compounds and liquefied petroleum gas (LPG) from a hydrocarbon feedstock having boiling points of 30-250° C. and a catalyst useful therefor.
A hydrocarbon conversion process in which the rate of coke formation is reduced without a significant sacrifice in light olefin and BTX yield by the use of a silylated, stabilized metal promoted zeolite catalyst.
alkyl aromatic hydrocarbons with the aid of a catalyst capable of disproportionation, rearrangement, and dealkylation, wherein said improvement comprises performing the reaction in the presence of an aromatic...
www.patentstorm.us /class/585/489-Transition_metal_containing_catalyst.html   (1791 words)

  
 Process for reducing bromine index of hydrocarbon feedstocks patent invention
For example, the shift from high-pressure semi-regenerative reformers to low-pressure moving bed reformers results in a substantial increase in BI in the reformate streams, which are aromatic hydrocarbon feedstocks for downstream processes.
Olefinic compounds may be objectionable in aromatic hydrocarbons at even very low concentrations of less than a few parts per million (ppm) for some processes such as nitration of benzene.
When the clay is spent, the aromatic hydrocarbon feedstocks are directed to a second reactor containing fresh clay, while the first reactor is emptied and reloaded.
www.freshpatents.com /Process-for-reducing-bromine-index-of-hydrocarbon-feedstocks-dt20061130ptan20060270886.php   (1412 words)

  
 Highbeam Encyclopedia - Search Results for aromatic
Bushy aromatic herb (Artemisia dracunculus) of the composite family, the dried leaves and flowering tops of which are used to add tang to many culinary dishes.
Its aromatic fruits are used in soups and as a flavoring for confectionery and for some liqueurs.
Validation and calibration of a model used to reconstruct historical exposure to polycyclic aromatic hydrocarbons for use in epidemiologic studies.(Research)
www.encyclopedia.com /SearchResults.aspx?Q=aromatic&StartAt=31   (920 words)

  
 Geochemical Transactions | Full text | Polar non-hydrocarbon contaminants in reservoir core extracts
The aliphatic and aromatic hydrocarbons and polar non-hydrocarbons were isolated using solid phase extraction methods.
GC analysis of the hydrocarbon fraction of the core extract indicated that contamination may be diesel derived.
The hydrocarbon and polar non-hydrocarbon containing fractions were recovered in CH (5 ml) and the solvent evaporated under a stream of nitrogen gas.
www.geochemicaltransactions.com /content/1/1/34   (2360 words)

  
 Polycyclic Aromatic Hydrocarbons (PAHs)   (Site not responding. Last check: )
Infrared Spectroscopy of Matrix-Isolated Polycyclic Aromatic Hydrocarbons 1.
Infrared Spectroscopy of Matrix-Isolated Polycyclic Aromatic Hydrocarbons 2.
Infrared Spectroscopy of Matrix-Isolated Polycyclic Aromatic Hydrocarbons 3.
web99.arc.nasa.gov /~astrochm/PAHs.html   (588 words)

Try your search on: Qwika (all wikis)

Factbites
  About us   |   Why use us?   |   Reviews   |   Press   |   Contact us  
Copyright © 2005-2007 www.factbites.com Usage implies agreement with terms.