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Topic: Aniline

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In the News (Fri 19 Apr 19)

  ATSDR - MMG: Aniline
Aniline is rapidly absorbed from the gastrointestinal tract.
Aniline is synthesized by catalytic hydrogenation of nitrobenzene or by ammonolysis of phenol.
Aniline poisoning is not known to pose additional risk during the use of bronchial or cardiac sensitizing agents.
www.atsdr.cdc.gov /MHMI/mmg171.html   (4992 words)

 Aniline - Wikipedia, the free encyclopedia
In commerce three brands of aniline are distinguished—aniline oil for blue, which is pure aniline; aniline oil for red, a mixture of equimolecular quantities of aniline and ortho- and para-toluidines; and aniline oil for safranine, which contains aniline and ortho-toluidine, and is obtained from the distillate (échappés) of the fuchsine fusion.
Aniline and its ring-substituted derivatives react with nitrous acid to form diazonium salts.
Oil mixtures containing rapeseed oil denatured with aniline have been clearly linked by epidemiological and analytic chemical studies to the toxic oil syndrome that hit Spain in the spring and summer of 1981, in which 20,000 became acutely ill, 12,000 were hospitalized, and more than 350 died in the first year of the epidemic.
en.wikipedia.org /wiki/Aniline   (1102 words)

Commercial aniline is obtained from nitrobenzene which is prepared from benzene with nitric acid by electrophilic substitution reaction or from chlorobenzene by heating with ammonia in the presence of copper catalyst.
Aniline is processed to produce a series of compounds being used in the rubber industry, e.g.
Anilide is an amide derived from aniline by substitution of an acyl group for the hydrogen of NH Acetanilide is thus obtained from acetic acid and aniline.
www.chemicalland21.com /arokorhi/petrochemical/ANILINE.htm   (1499 words)

 aniline. The Columbia Encyclopedia, Sixth Edition. 2001-05   (Site not responding. Last check: 2007-10-06)
Aniline boils at 184°C and melts at -6°C. It is of great importance in the dye industry, being used as the starting substance in the manufacture of many dyes—e.g., indigo—and as an aid in the manufacture of others.
Aniline is prepared commercially by the reduction of nitrobenzene, a product of coal tar, or by heating chlorobenzene with ammonia in the presence of a copper catalyst.
Aniline is also important in the manufacture of rubber-processing chemicals and antioxidants.
www.bartleby.com /65/an/aniline.html   (216 words)

 NPI: Aniline (benzenamine) fact sheet
Aniline is unlikely to exist in terrestrial environments in sufficient concentrations to cause serious acute or chronic effects to terrestrial organisms.
Aniline is not expected to accumulate significantly in aquatic organisms; however, it is absorbed and metabolised by fish.
Aniline is predominantly used as a chemical intermediate for the dye, agricultural, polymer, and rubber industries.
www.npi.gov.au /database/substance-info/profiles/9.html   (1568 words)

 ANILINE   (Site not responding. Last check: 2007-10-06)
Aniline is a blood toxin, causing hemoglobin to convert to methemoglobin, resulting in cyanosis.
A NIOSH study reported an excess bladder cancer risk in workers exposed to aniline in combination with other dyestuffs and intermediates, although it is not clear which of these materials, or combinations, were responsible for the higher incidence of bladder cancer.
Based on the results of this study, historical epidemiology evidence which shows no correlation of pure aniline with bladder cancer, and experimental test results, it was concluded that aniline, most likely, is not responsible for the increased incidence of bladder tumors in the NIOSH study.
www.conncoll.edu /offices/envhealth/MSDS/chemistry/A/aniline.htm   (1466 words)

 Talk:Aniline - Wikipedia, the free encyclopedia
Please participate by editing the article Aniline, or visit the project page for more details on the projects.
I have redirected the article Aniline dye to this article, since the entire amount of material to be merged (quoted below) was quite brief; the last sentence is misleading if not actually completely incorrect.
The first synthetic dye (mauve, developed in 1856) was a coal tar product and contained the chemical aniline but the term "aniline" has been used to include other chemical type dyes.
en.wikipedia.org /wiki/Talk:Aniline   (335 words)

 Interactions of Aniline with Soil and Groundwater at an Industrial Spill Site
However, aniline was released to a significant extent in the presence of denitrifying and methanogenic microbial activity.
Reactions between aniline and phenol, benzoic acid, benzaldehyde, and benzoquinone were conducted to represent reactions between aniline and functional groups on soil humic matter.
Aniline held by noncovalent forces may be leached to the groundwater or may form covalent bonds with itself by various condensation and oxidation reactions or with the soil organic matter.
www.ehponline.org /members/1995/Suppl-5/kosson-full.html   (2383 words)

 Nitrobenzene/Aniline - Market Size, Market Share and Demand Forecast;
Nitrobenzene is produced by nitration of benzene with nitric acid in the presence of sulfuric acid as a catalyst and dehydrating agent.
Ninety-plus percent of nitrobenzene is converted to aniline by hydrogenation.
Aniline is typically produced by catalytic hydrogenation of nitrobenzene, but there is also a commercial route involving amination of phenol.
nexant.ecnext.com /coms2/summary_0255-142_ITM   (1644 words)

 EPA - Air Toxics Website - Aniline
Human cancer data are insufficient to conclude that aniline is a cause of bladder tumors while animal studies indicate that aniline causes tumors of the spleen.
Aniline is considered to have high acute toxicity, based on short-term animal tests in rats.
Aniline is severely irritating to mucous membranes and affects the eyes, skin, and upper respiratory tract in humans.
www.epa.gov /ttn/atw/hlthef/aniline.html   (1396 words)

 Aniline [factsheet]
* Airborne exposure to aniline may occur from breathing contaminated air, from smoking tobacco or proximity to someone who is smoking, or from being near industrial sources that use large quantities of aniline.
(m g/L) EPA estimates that, if an individual were to ingest water containing aniline at 6 m g/L* over his or her entire lifetime, that person would theoretically have no more than a one-in-a-million increased chance of developing cancer as a direct result of drinking water containing this chemical.
* Aniline is predominantly used as a chemical intermediate for the dye, agricultural, polymer, and rubber industries.
www.weblakes.com /toxic/ANILINE.HTML   (1109 words)

 Aniline Point Apparatus
The sample aniline mixture is directly heated by a platinum immersion heater, and the aniline point is detected photoelectrically.
Aniline points as low as 21°F (-6°C) can be determined with the use of refrigerated cooling air.
Aniline point is used to characterize pure hydrocarbons and to indicate the aromatic content of hydrocarbon mixtures.
www.dmscientific.com /koehler_k10200.html   (308 words)

 Aniline producers price capacity market demand consumption production growth uses outlook
Most aniline is produced through the hydrogenation of nitrobenzene.
In the third quarter of 2000, BASF brought on stream a second aniline plant at Geismar, La., with a capacity of 265 million pounds, raising total capacity to 455 million pounds per year.
Though somewhat depressed by comparison to its performance in recent years, aniline should continue to produce better than GDP growth for the next four years, forecasted at 3.9 percent annually.
www.the-innovation-group.com /ChemProfiles/Aniline.htm   (505 words)

 The Synthesis of Aniline Purple
From distilled coal tar comes crude aniline, which is a mixture of aniline, o-toluidine, and p-toluidine.
It was later discovered that if a 1:2:1 ratio of aniline, o-toluidine, and p-toluidine was used, the yield could be maximized to about 15%.
1:2:1 molar mixture of aniline, o-toluidine, and p-toluidine
www.chem.pacificu.edu /Projects2005/Pages/aniline.htm   (1163 words)

 PDEIS spectrum of aniline electropolymerisation on gold   (Site not responding. Last check: 2007-10-06)
The figures in this page show the signatures of ac and dc potentiodynamic responses acquired with potentiodynamic electrochemical impedance spectroscopy in cathodic and anodic scans in the initial and most nonstationary stages of aniline electropolymerisation on gold.
The dc part of the response is represented by the voltammogram in the transparent front facet of the parallelepiped.
Analysis of the ac response dependence on frequency gives parameters of the underlying processes as functions of variable potential and this enables simultaneous investigation of various interrelated processes (see the article).
www.abc.chemistry.bsu.by /vi/aniline_electropolymerisation.htm   (142 words)

 aniline, Facts   (Site not responding. Last check: 2007-10-06)
Aniline, The Chemical with 1000 and 1 Uses
This report is written for the dozens of professionals and students who have e-mailed me over the past few years asking questions about the toxicology, uses, and environmental control of the chemical aniline.
Note: A3 a known carcinogen in animals which may be relevant to humans.
www.aniline.com /knowledgebase/Tech_Reports/anilchem.html   (156 words)

 Aniline definition - Medical Dictionary definitions of popular medical terms
Aniline: A chemical compound implicated, along with o-toluidine, in the causation of bladder cancer.
Aniline and o-toluidine, both aromatic amines, are used in the manufacture of a variety of dyes, pharmaceuticals, pesticides, and chemicals employed in the manufacture of rubber.
The risk of bladder cancer is greatest among workers with possible and definite exposures to o-toluidine and aniline, and the risk increases with the duration of exposure.
www.medterms.com /script/main/art.asp?articlekey=16033   (248 words)

 ANILINE-INDUCED TOXICITIES FROM LOCAL ANESTHETICS   (Site not responding. Last check: 2007-10-06)
In the latter case anilines are given access to the cellular genetic apparatus, explaining genotoxic long-term cellular damage associated with anilines.
Data on aniline derivative metabolite excretion is deficit, but at human in vivo temperature these aniline compounds can be expected to, for the most part, follow a volatile pathway of excretion (e.g.
Once incorporated into their local anesthetic forms, however, anilines were believed to have been rendered harmless, transformed into benign, utilitarian pain relievers with few and minor side effects and now used liberally in medicine and dentistry throughout much of the world.
www.garynull.com /Documents/Dental/ToxicAnesthetics.htm   (4786 words)

 Etherington & Roberts. Dictionary--aniline dyes   (Site not responding. Last check: 2007-10-06)
A class of synthetic, organic dyes originally obtained from aniline (coal tars), which were, in fact, the first synthetic dyes.
Today the term is used with reference to any synthetic organic dyes and pigments, regardless of source, in contrast to animal or vegetable coloring materials, natural earth pigments, and synthetic inorganic pigments.
Aniline dyes are classified according to their degree of brightness or their light fastness.
palimpsest.stanford.edu /don/dt/dt0108.html   (108 words)

 K10200 Automatic Aniline Point Apparatus with Automated Sampling System
Equal volumes of aniline and sample or sample plus n-heptane are stirred together while being heated at a controlled rate.
Aniline points as low as 0°C (32°F) can be determined with the use of refrigerated cooling air.
Automatically adds exact volumes of the test components to the mixing chamber, followed by transfer of the test mixture to a waste container and rinsing of the mixing chamber with solvent at the completion of the test.
www.koehlerinstrument.com /products/K10200.html   (407 words)

 Etherington & Roberts. Dictionary--aniline   (Site not responding. Last check: 2007-10-06)
It is manufactured by the reduction of nitrobenzene with iron filings and either hydrochloric acid or ferrous chloride, and subsequent steam distillation after the addition of lime.
Aniline is an oily, colorless, toxic liquid, which darkens upon exposure to air.
It is soluble in water, alcohol, and ether, and forms a number of salts.
palimpsest.stanford.edu /don/dt/dt0106.html   (108 words)

 Aniline and Mauveine Dyes   (Site not responding. Last check: 2007-10-06)
This in turn had a radical effect on printmaking in Japan when the aniline dyes were imported from Britain and Germany, and largely replaced traditional organic inks used in woodblock prints.
In order to better understand the printmaking process of the time, and the conservation of prints from this period, we want to know about the solubilities of mauveine (aniline purple) and fugitive fuschein (aniline red) dyes.
The chemical identity of Aniline Red is tricky to find there seem to be several dyes that carry that label.
www.newton.dep.anl.gov /askasci/gen01/gen01578.htm   (364 words)

 Documentation for Immediately Dangerous To Life or Health Concentrations (IDLHs)
None established; NIOSH considers aniline to be a potential occupational carcinogen as defined by the OSHA carcinogen policy [29 CFR 1990].
Basis for revised IDLH: Based on acute inhalation toxicity data in humans [AIHA 1955; Henderson and Haggard 1943; von Oettingen 1941], the original IDLH for aniline of 100 ppm is not being revised at this time.
Acute oral toxicity of mono- and di-alkyl ring-substituted derivatives of aniline.
www.cdc.gov /niosh/idlh/62533.html   (495 words)

 Aniline Blue
Note: Aniline Blue is a mixture of water soluble Acid Blue 22 (CI 42755) and Acid Blue 93 (CI 42780)
0.5 gm Aniline Blue, 2 gm Orange G, 1gm phosphotungstic acid, dissolve in 100 ml distilled water.
Wipe off excess dye from slides and immerse slides in the Aniline Blue solution for 20minutes to 1 hour.
www.biostains.org /aniline_blue.htm   (263 words)

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