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

Topic: Triethylamine


Related Topics

In the News (Thu 16 Feb 12)

  
  Triethylamine | Technology Transfer Network Air Toxics Web site | US EPA
Triethylamine is used as a catalytic solvent in chemical syntheses; as an accelerator activator for rubber; as a corrosion inhibitor; as a curing and hardening agent for polymers; as a propellant; in the manufacture of wetting, penetrating, and waterproofing agents of quaternary ammonium compounds; and for the desalination of seawater.
Acute animal tests in rats, mice, and rabbits, have demonstrated triethylamine to have moderate acute toxicity from inhalation, moderate to high acute toxicity from oral exposure, and high acute toxicity from dermal exposure.
Triethylamine occurs as a colorless flammable liquid that is slightly soluble in water.
www.epa.gov /ttn/atw/hlthef/tri-lami.html   (1028 words)

  
 Triethylamine Vapor Monitor / Monitoring Badge - EMT
EMT's Triethylamine Monitoring Kit includes one vapor monitor / monitoring badge, detailed instructions, a monitoring information form, and a shipping label.
They are designed to provide you with the ability to check exposure levels to Triethylamine.
OSHA Permissible exposure limit (PEL) for triethylamine is 25 ppm, 100 mg/m3
www.emt-online.com /ProductPages/Triethylamine.htm   (153 words)

  
 Triethylamine:
Triethylamine, also known as N,N-diethylethanamine, TEN or N,N,N-Triethylamine, is a colorless, volatile liquid with a strong, unpleasant and fishy smell reminiscent of ammonia.
Triethylamine is commonly employed in organic synthesis as a base, most often in the preparation of esters and amides with acyl chlorides.
Triethylamine is also used for the preparation of quaternary ammonium compounds and in the synthesis of pesticides, pharmaceuticals, paints and coatings.
www.winelib.com /wiki/Triethylamine   (231 words)

  
 NTP: Triethylamine.html (revised)
Triethylamine is produced by reacting ammonia with ethanol, N,N-diethylacetamide with lithium aluminum hydride, or ethyl chloride with ammonia under heat and pressure (Nelson and Bull, 1990).
Consumption of triethylamine used as a scavenger of HCl produced during certain reactions, such as during the manufacture of benzyl phthalates from benzyl chloride and monophthalate esters, is limited because triethylamine is recovered and recycled.
Triethylamine was detected at a concentration of 356.5 mg/L (3.52 mmol/L) in an effluent sample from the plastics and synthetics industry (HSDB, 1996).
ntp.niehs.nih.gov /index.cfm?objectid=03E2A2D9-C3A5-2BA7-A7EF1882005543DC   (651 words)

  
 BINARY-SOLUTION CRITICAL OPALESCENCE
The mixture of water and triethylamine exhibit negative deviations from Raoult’s law.
  Triethylamine and water mixture is the example of the opposite behavior: the solution has lower consolute point and we have to heat the mixture in order to pass from one phase solution to two phase solution.
Prepare 20 - 30 mL of eight different solutions of triethylamine and water, such that the mole fractions of triethylamine in these solutions span the range from 0.05 to 0.3.
www.tau.ac.il /~phchlab/experiments/Binary_Solutions/critopal.html   (1622 words)

  
 TRIETHYLAMINE/TRIMETHYLAMINE - (Partially Validated Method #2060)   (Site not responding. Last check: )
The OSHA TWA PEL for triethylamine is 25 ppm (100 mg/m
Triethylamine is used as a catalytic solvent in chemical synthesis; accelerator activator for rubber; in wetting, penetrating, and waterproofing; as an agent of quaternary ammonium types; in the curing and hardening of polymers; as a corrosion inhibitor, and as a propellant.
Trimethylamine is used as an insect attractant; as a warning agent in natural gas; in organic synthesis; in disinfectants; in plastics; as a flotation agent; and in the manufacture of quaternary ammonium compounds.
www.osha.gov /dts/sltc/methods/partial/pv2060/2060.html   (2656 words)

  
 ARKAT USA, Inc.
This is cyclised to the parent 4-thia-10b-azaindeno[2,1,7-lma]fluorene 4 by triethylamine in dimethylformamide.
The Vilsmeier salt 3 was cyclised to the parent 4-thia-10b-azaindeno[2,1,7-lma]fluorene 4 by triethylamine in dimethylformamide.
Triethylamine (16 mL) was added to a solution of the crude mixture from the previous reaction (10 mmol scale) in dimethylformamide (50 mL) and the mixture was boiled for 2 min.
www.arkat-usa.org /home.aspx?VIEW=MANUSCRIPT&MSID=299   (804 words)

  
 ARKAT USA, Inc.
Triethylamine, as well as other tertiary amines, promote trimerisation of 1 to 3 (X-ray shown), and a possible mechanism involving potentiation via a Michael addition to 1 is proposed.
Triethylamine (0.44 ml, 3.15 mmol) in THF (2 ml) was added slowly to a stirred solution of 2-iodo-1,3-bis(phenylsulfonyl)propene (1.34g, 3.0 mmol) in THF (5 ml) at -78°C.
Triethylamine (0.17ml, 1.25 mmol) was added slowly via syringe to a solution of 1,3-bis(phenylsulfonyl)allene 1 (200mg, 0.63 mmol) in dry dichloromethane (4 ml) at 0ºC. After 2h the solvent was removed in vacuo and the residue purified directly by column chromatography-(eluent EtOAc / light petrol) to afford trimer 3 (120mg, 60%), m.p.
www.arkat-usa.org /home.aspx?VIEW=MANUSCRIPT&MSID=599   (1860 words)

  
 NTP: Triethylamine.html (revised)
The nomination of triethylamine [121-44-8] by Dr. Frank Mirer of the United Auto Workers is based on its high production volume, the large number of occupationally exposed workers, and the lack of carcinogenicity data.
Triethylamine is a very dangerous fire hazard when exposed to heat, flame, or oxidizers.
Triethylamine is available in bulk quantities from Ashland Chemical Co., Industrial Chemicals and Solvents Division, BASF Corporation, Elf Atochem, North America, and Interchem Corporation (Strum, 1997).
ntp-server.niehs.nih.gov /index.cfm?objectid=03E2A152-FCC0-F8A5-FD9CB09ABAF91688   (206 words)

  
 ACETONE TRIMETHYSILYL ENOL ETHER
To a 5-L, four-necked flask, equipped with a mechanical stirrer, a reflux condenser with a nitrogen inlet, a thermometer, and a pressure-equalizing dropping funnel, are added 150 g (2.6 mol) of acetone (Note 1) and 192 g (1.9 mol) of triethylamine (Note 2) under a nitrogen atmosphere.
Triethylamine was dried over potassium hydroxide pellets for at least 24 hr.
The impurities, identified by NMR, are triethylamine (0.5%) and hexamethyldisiloxane (7.5%).
www.orgsyn.org /orgsyn/orgsyn/prepContent.asp?prep=cv8p0001   (831 words)

  
 Triethylamine   (Site not responding. Last check: )
CCN(CC)CC Triethylamine, also known as N,N-diethylethanamine, TEA or N,N,N-Triethylamine, is a colorless, volatile liquid with a strong, unpleasant and fishy smell reminiscent of ammonia.
Triethylamine is commonly employed in organic synthesis as a base, most often in the preparation of esters with acid chlorides.
Triethylamine is also used for the preparation of quarternary ammonium compounds and in the synthesis of pesticides, pharmaceuticals, paints and coatings.
www.abcworld.net /Triethylamine.html   (224 words)

  
 052011pe
Liquid mixtures of acetic acid with triethylamine exhibit phase separation at ambient temperatures and have noticeably negative values of the excess Gibbs free energy.
In this paper, we report the experimental LLE data for the ternary mixtures composed of acetic acid, triethylamine with chlorobenzene or toluene at 293.15K, and further apply the present model to reduce the LLE of the ternary mixtures from the binary information.
The LLE results for the acetic acid, triethylamine and chlorobenzene or toluene measured at 293.15K are presented.
china.chemistrymag.org /cji/2003/052011pe.htm   (1191 words)

  
 Substitution of Non-Flammable Carbon Dioxide for Flammable Ether in Immobilization of Drosophila
Triethylamine is flammable, can cause severe respiratory and skin irritation, and burns.
As an alternative to ethyl ether and triethylamine, CO a nonflammable gas, may be used to immobilize the Drosophila.
Triethylamine, normally used in very small quantities, is nevertheless potentially flammable and corrosive.
www.p2000.umich.edu /chemical_waste/cw10.htm   (933 words)

  
 Solvent Extraction as a Decontamination Technique - Presentation   (Site not responding. Last check: )
One of the keys of the B.E.S.T.® process is the use of Triethylamine as the solvent.
Triethylamine has the interesting characteristic of being inversely miscible with water.
When the temperature of triethylamine exceeds 130°F, the solvent is not miscible and therefore separates from the solution.
www.rpi.edu /dept/chem-eng/Biotech-Environ/DOWNSTREAM/presenta.htm   (376 words)

  
 Organopolysiloxane compositions modified with polyurethane - Patent 4202807
and a mixture of 349.5 g of toluylene diisocyanate (mixture of isomers comprising 80% of 2,4-toluylene diisocyanate and 20% of 2,6-toluylene diisocyanate) and 1.8 g of triethylamine is metered in at a uniform rate in the course of one hour, while stirring.
A mixture of 57.9 g of the toluylene diisocyanate of Example 1 and 0.3 g of triethylamine is added in the course of 0.5 hour, while stirring, to a mixture, which has been warmed to 80.degree.
A solution of 100 g of a linear polyester based on adipic acid and ethylene glycol with a hydroxyl group content of 1.65% and 107.5 g of the polydimethylsiloxane of Example 1 in 200 g of toluene is warmed to 80.degree.
www.freepatentsonline.com /4202807.html   (4172 words)

  
 triethylamine - OneLook Dictionary Search
Triethylamine : Online Plain Text English Dictionary [home, info]
triethylamine : Webster's Revised Unabridged, 1913 Edition [home, info]
triethylamine : Dorland's Illustrated Medical Dictionary [home, info]
www.onelook.com /?w=triethylamine   (114 words)

  
 Oxa- and azahomocyclostatine polypeptides - Patent 4668769   (Site not responding. Last check: )
The mixture was cooled, treated with triethylamine (10 ml.) and ether (125 ml.), filtered through Celite, and concentrated.
The procedure was repeated with additional amounts of triethylamine and ether until a clear yellow oil was obtained (2.95 g.) which was used without additional purification.
A mixture of L-isoleucine methyl ester (24.3 g., 0.134 mmoles) and triethylamine (13.5 g., 0.134 mmoles) in methylene chloride (210 ml.) was prepared and a solution of ditertbutyldicarbonate (Aldrich, 29.1 g., 0.134 mmoles) in methylene chloride (25 ml.) was added dropwise to this mixture at 0.degree.
www.freepatentsonline.com /4668769.html   (13394 words)

  
 2003 FDA Science Forum Poster Abstract: 213   (Site not responding. Last check: )
Triethylamine, a mobile phase modifier, has been found to help resolve tryptophan and domoic acid (Eilers 1996).
Triethylamine was found to work by reducing retention time and tailing of the tryptophan peak, while having little effect on domoic acid.
The observations can be explained by competition of triethylamine with the analytes for free silanol sites on the column, and by the relative pKa values of tryptophan and domoic acid.
www.cfsan.fda.gov /~frf/forum03/A-03.HTM   (223 words)

  
 Triethylamine hydrochloride   (Site not responding. Last check: )
Triethylamine hydrochloride is mainly used in the production of quarternary ammonium compounds for textile auxiliaries and quarternary ammonium salts of dyes.
It is also a catalyst and acid neutralizer for condensation reactions and is useful as an intermediate for manufacturing medicines (for example, as a side chain for semi-synthetic antibiotics), pesticides and other chemicals.
Triethylamine hydrochloride is irritating to eyes, the respiratory system, and the skin.
www.guideofpills.com /Triethylamine_hydrochloride.html   (348 words)

  
 Triethylamine [factsheet]
These scores are nonlinear and are the product of two ratings: a rating based on the minimal-effect-dose and a rating based on the type of effect.
* Triethylamine occurs as a colorless flammable liquid that is slightly soluble in water.
* Triethylamine is used as a catalytic solvent in chemical syntheses; as an accelerator activator for rubber; as a corrosion inhibitor; as a curing and hardening agent for polymers; as a propellant; in the manufacture of wetting, penetrating, and waterproofing agents of quaternary ammonium compounds; and for the desalination of seawater.
www.weblakes.com /toxic/TRIETHYLAMINE.HTML   (812 words)

  
 Sovent Extraction as a Decontamination Technique - extractor   (Site not responding. Last check: )
Triethylamine is added to the unit in approximately a 3:1 mass ratio.
Since triethylamine is not miscible with water at this temperature, no additional water is removed.
When most of the remaining solvent is removed, the solids are subjected to direct steam injection in order to remove residual triethylamine.
www.rpi.edu /dept/chem-eng/Biotech-Environ/DOWNSTREAM/extracto.htm   (259 words)

  
 Method for producing ethyldimethylamine and triethylamine patent invention   (Site not responding. Last check: )
[0002] Triethylamine serves as a starting material for the preparation of surfactants, textile and flotation auxiliaries, bactericides, corrosion and foam inhibitors, additives for pharmaceuticals, and as antioxidants for fats and oils.
[0015] The process according to the invention permits the preparation of ethyldimethylamine and triethylamine in a process in which a coproduction of ethyldimethylamine and triethylamine is carried out where, using simple process steps, the preparation of these amines can take place in a single process.
Since ethyldimethylamine and triethylamine can be separated easily from one another by distillation and from diethylamine or a diethylamine/dimethylamine mixture, the process according to the invention is advantageous compared with the separate production of the two amines.
www.freshpatents.com /Method-for-producing-ethyldimethylamine-and-triethylamine-dt20050714ptan20050154235.php   (1073 words)

  
 Hydrogen Bonding
The thermodynamic quantities associated with the formation of a hydrogen bond between chloroform and triethylamine are investigated computationally using MOPAC and experimentally via temperature-dependent nuclear magnetic resonance.
With this technique MOPAC was used to estimate the enthalpy of formation for the hydrogen bond between chloroform and triethylamine.
The molar quantities of chloroform, triethylamine, and the hydrogen-bonded species in equilibrium are represented by C, T, and B respectively while the initial molar quantities are C
www.chem.pacificu.edu /johnson/courses/hbond/Hbond.html   (613 words)

  
 Triethylamine (TEA)
Triethylamine is an ion-pairing reagent that alters selectivity in reverse-phase HPLC separations.
Sequanal grade is designed to meet the special requirements for peptide sequencing and analysis.
Pierce triethylamine is specially purified and each lot is tested to the highest specifications to ensure the integrity of your data, maximize sensitivity in your assay and to prolong the life of your equipment.
www.piercenet.com /Products/Browse.cfm?fldID=02040622   (184 words)

  
 ExactAntigen TRIETHYLAMINE
(2003) In flow activation of diol-silica with cyanogen bromide and triethylamine for preparing high-performance affinity chromatographic columns J Chromatogr A 984:9-17
(2002) Reactions of oxalyl chloride with 1,2-cycloalkanediols in the presence of triethylamine Chem Pharm Bull (Tokyo) 50:83-6
(2001) Quenching effect of triethylamine on peroxyoxalate chemiluminescence in the presence of 7-amino-4-trifluoromethylcumarin Spectrochim Acta A Mol Biomol Spectrosc 57:2355-8
chemical.exactantigen.com /t/triethylamine.html   (162 words)

  
 Epichem: MO's: Products: Dimethylzinc-Triethylamine   (Site not responding. Last check: )
Furthermore, key halide contaminants are effectively complexed by triethylamine as involatile species, thus providing an ultra high purity source.
The use of dimethylzinc amine adducts for the p-type doping of InP and related alloys, AC Jones et al, J.
p-doping of GaAs and AlGaAs using the triethylamine adduct of dimethylzinc, AC Jones et al, Adv.
www.epichem.com /metalorganics/products/zn_trieth.html   (473 words)

  
 Physikalisch-Technische Bundesanstalt (PTB)
A newly developed molecular beam method allowed the differential elastic and double-differential inelastic electron scattering cross sections of triethylamine to be measured absolutely for the first time.
The experimental determination of the differential elastic and double-differential inelastic-electron scattering cross sections of triethylamine (TEA) is of interest for the investigation of radiation damages in nanometric areas of living organisms, as the chemical components and bonding types of TEA frequently occur in biomolecular systems such as the DNA.
Here, the cross sections for electrons are of special importance, as electrons are generated as secondary particles in matter by all beam types.
www.ptb.de /en/org/6/nachrichten6/2005/61405_en.htm   (395 words)

  
 Environmental Expert.com. Effects of Operational Conditions on the Performance of Triethylamine Biofiltration
Nitrogen compounds such as triethylamine are odorants generally found in chemical plants and foundries in which cold-box cores are made.
In this study, the efficiency of biofiltration of triethylamine (TEA) vapor was evaluated.
Experiments were conducted in two 6-L biofilters arranged in three stages and packed with inoculated compost - wood chips (40:60v/v) as the filter medium.
www.environmental-expert.com /resulteacharticle4.asp?cid=21908&codi=6215   (307 words)

  
 OXIDATION OF ALCOHOLS BY METHYL SULFIDE – N-CHLOROSUCCINIMIDE – TRIETHYLAMINE: 4-tert-BUTYLCYCLOHEXANONE
The submitters used N-chlorosuccinimide, 4-tert-butylcyclohexanol, methyl sulfide, and triethylamine, available from Aldrich Chemical Company, Inc., without further purification.
The checkers used cis- and trans-4-tert-butylcyclohexanol (36:64) obtained from E. Merck A G, Darmstadt, methyl sulfide obtained from Tokyo Kasei Kogyo Co., Ltd., and triethylamine obtained from Wako Pure Chemical Industries, Ltd., without further purification.
The triethylamine hydrochloride is also removed in this step.
www.orgsyn.org /orgsyn/orgsyn/prepContent.asp?rxntypeid=198&prep=CV6P0220   (839 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.