Chemistry:Trimethylamine

From HandWiki
Short description: Chemical compound responsible for rotten fish odor
Trimethylamine[1]
Skeletal formula of trimethylamine with all implicit hydrogens shown
Ball and stick model of trimethylamine
Spacefill model of trimethylamine
Names
Preferred IUPAC name
N,N-Dimethylmethanamine
Other names
(Trimethyl)amine (The name trimethylamine is deprecated.)[2]
Identifiers
3D model (JSmol)
3DMet
956566
ChEBI
ChEMBL
ChemSpider
EC Number
  • 200-875-0
KEGG
RTECS number
  • PA0350000
UNII
UN number 1083
Properties
C3H9N
Molar mass 59.112 g·mol−1
Appearance Colorless gas
Odor Fishy, ammoniacal
Density 670 kg m−3 (at 0 °C)
627.0 kg m−3 (at 25 °C)
Melting point −117.20 °C; −178.96 °F; 155.95 K
Boiling point 3 to 7 °C; 37 to 44 °F; 276 to 280 K
Miscible
log P 0.119
Vapor pressure 188.7 kPa (at 20 °C)[3]
95 μmol Pa−1 kg−1
Basicity (pKb) 4.19
0.612 D
Thermochemistry
−24.5 to −23.0 kJ mol−1
Hazards
GHS pictograms GHS02: Flammable GHS05: Corrosive GHS07: Harmful
GHS Signal word DANGER
H220, H315, H318, H332, H335
P210, P261, P280, P305+351+338
NFPA 704 (fire diamond)
Flammability code 4: Will rapidly or completely vaporize at normal atmospheric pressure and temperature, or is readily dispersed in air and will burn readily. Flash point below 23 °C (73 °F). E.g. propaneHealth code 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformReactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no codeNFPA 704 four-colored diamond
4
2
0
Flash point −7 °C (19 °F; 266 K)
190 °C (374 °F; 463 K)
Explosive limits 2–11.6%
Lethal dose or concentration (LD, LC):
500 mg kg−1 (oral, rat)
NIOSH (US health exposure limits):
PEL (Permissible)
 none[4]
REL (Recommended)
 TWA 10 ppm (24 mg/m3) ST 15 ppm (36 mg/m3)[4]
IDLH (Immediate danger)
 N.D.[4]
Related compounds
Related amines
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is ☑Y☒N ?)
Infobox references
Tracking categories (test):

Trimethylamine (TMA) is an organic compound with the formula N(CH3)3. It is a trimethylated derivative of ammonia. TMA is widely used in industry.[5][6] At higher concentrations it has an ammonia-like odor, and can cause necrosis of mucous membranes on contact.[7] At lower concentrations, it has a "fishy" odor, the odor associated with rotting fish.

Physical and chemical properties

TMA is a colorless, hygroscopic, and flammable tertiary amine. It is a gas at room temperature but is usually sold as a 40% solution in water. It is also sold in pressurized gas cylinders.

TMA protonates to give the trimethylammonium cation. Trimethylamine is a good nucleophile, and this reactivity underpins most of its applications. Trimethylamine is a Lewis base that forms adducts with a variety of Lewis acids.[8]

Production

Industry and laboratory

Trimethylamine is prepared by the reaction of ammonia and methanol employing a catalyst:[5]

3 CH3OH + NH3 → (CH3)3N + 3 H2O

This reaction coproduces the other methylamines, dimethylamine (CH3)2NH and methylamine CH3NH2.

Trimethylammonium chloride has been prepared by a reaction of ammonium chloride and paraformaldehyde:[9]

9 (CH2=O)n + 2n NH4Cl → 2n (CH3)3N•HCl + 3n H2O + 3n CO2

Biosynthesis

Trimethylamine is produced by several routes in nature. Well studied are the degradation of choline and carnitine.[10]

Applications

Trimethylamine is used in the synthesis of choline, tetramethylammonium hydroxide, plant growth regulators, herbicides, strongly basic anion exchange resins, dye leveling agents and a number of basic dyes.[5][6] Gas sensors to test for fish freshness detect trimethylamine.

Toxicity

In humans, ingestion of certain plant and animal (e.g., red meat, egg yolk) food containing lecithin, choline, and L-carnitine provides certain gut microbiota with the substrate to synthesize TMA, which is then absorbed into the bloodstream.[11][12] High levels of trimethylamine in the body are associated with the development of trimethylaminuria, or fish odor syndrome, caused by a genetic defect in the enzyme which degrades TMA; or by taking large doses of supplements containing choline or L-carnitine.[11][12] TMA is metabolized by the liver to trimethylamine N-oxide (TMAO); TMAO is being investigated as a possible proatherogenic substance which may accelerate atherosclerosis in those eating foods with a high content of TMA precursors.[12] TMA also causes the odor of some human infections, bad breath, and bacterial vaginosis.

Trimethylamine is a full agonist of human TAAR5,[13][14][15] a trace amine-associated receptor that is expressed in the olfactory epithelium and functions as an olfactory receptor for tertiary amines.[15][16] One or more additional odorant receptors appear to be involved in trimethylamine olfaction in humans as well.[16]

Acute and chronic toxic effects of TMA were suggested in medical literature as early as the 19th century. TMA causes eye and skin irritation, and it is suggested to be a uremic toxin.[17] In patients, trimethylamine caused stomach ache, vomiting, diarrhoea, lacrimation, greying of the skin and agitation.[18] Apart from that, reproductive/developmental toxicity has been reported.[7] Some experimental studies suggested that TMA may be involved in etiology of cardiovascular diseases.[19][20]

Guidelines with exposure limit for workers are available e.g. the Recommendation from the Scientific Committee on Occupational Exposure Limits by the European Union Commission.[21]

Trimethylaminuria

Main page: Medicine:Trimethylaminuria

Trimethylaminuria is an autosomal recessive genetic disorder involving a defect in the function or expression of flavin-containing monooxygenase 3 (FMO3) which results in poor trimethylamine metabolism. Individuals with trimethylaminuria develop a characteristic fish odor—the smell of trimethylamine—in their sweat, urine, and breath after the consumption of choline-rich foods. A condition similar to trimethylaminuria has also been observed in a certain breed of Rhode Island Red chicken that produces eggs with a fishy smell, especially after eating food containing a high proportion of rapeseed.[22][23]

In the history of psychoanalysis

The first dream of his own which Sigmund Freud tried to analyse in detail, when he was developing his theories about the interpretation of dreams, involved a patient of Freud's who had to have an injection of trimethylamine, and the chemical formula of the substance, written in bold letters on the bottle, jumping out at Freud.[24]

See also

References

  1. ↑ Merck Index, 11th Edition, 9625.
  2. ↑ IUPAC Chemical Nomenclature and Structure Representation Division (2013). "P-62.2.2.1". in Favre, Henri A.; Powell, Warren H.. Nomenclature of Organic Chemistry: IUPAC Recommendations and Preferred Names 2013. IUPAC–RSC. ISBN 978-0-85404-182-4. https://pubs.rsc.org/en/Content/eBook/978-0-85404-182-4. 
  3. ↑ Swift, Elijah; Hochanadel, Helen Phillips (May 1945). "The Vapor Pressure of Trimethylamine from 0 to 40°". Journal of the American Chemical Society 67 (5): 880–881. doi:10.1021/ja01221a508. 
  4. ↑ 4.0 4.1 4.2 NIOSH Pocket Guide to Chemical Hazards. "#0636". National Institute for Occupational Safety and Health (NIOSH). https://www.cdc.gov/niosh/npg/npgd0636.html. 
  5. ↑ 5.0 5.1 5.2 Van Gysel, August B.; Musin, Willy (2000). "Ullmann's Encyclopedia of Industrial Chemistry". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a16_535. 
  6. ↑ 6.0 6.1 Ashford, Robert D. (2011). Ashford's Dictionary of Industrial Chemicals (3rd ed.). Wavelength. p. 9362. ISBN 978-0-9522674-3-0. 
  7. ↑ 7.0 7.1 "Trimethylamine [MAK Value Documentation, 1983]", The MAK-Collection for Occupational Health and Safety, Wiley-VCH Verlag GmbH & Co. KGaA, 2014-10-27, pp. 1–9, doi:10.1002/3527600418.mb7550e0914, ISBN 978-3527600410 
  8. ↑ Cramer, R. E.; Bopp, T. T. (1977). "Graphical display of the enthalpies of adduct formation for Lewis acids and bases". Journal of Chemical Education 54: 612–613. doi:10.1021/ed054p612. 
  9. ↑ Adams, Roger; Marvel, C. S. (1921). "Trimethylamine Hydrochloride". Organic Syntheses 1: 79. doi:10.15227/orgsyn.001.0079. 
  10. ↑ Craciun, Smaranda; Balskus, Emily P. (2012). "Microbial conversion of choline to trimethylamine requires a glycyl radical enzyme". Proceedings of the National Academy of Sciences 109 (52): 21307–21312. doi:10.1073/pnas.1215689109. PMID 23151509. 
  11. ↑ 11.0 11.1 "Microbiology Meets Big Data: The Case of Gut Microbiota-Derived Trimethylamine". Annu. Rev. Microbiol. 69: 305–321. 2015. doi:10.1146/annurev-micro-091014-104422. PMID 26274026. "we review literature on trimethylamine (TMA), a microbiota-generated metabolite linked to atherosclerosis development.". 
  12. ↑ 12.0 12.1 12.2 "Archaea and the human gut: new beginning of an old story". World J. Gastroenterol. 20 (43): 16062–16078. November 2014. doi:10.3748/wjg.v20.i43.16062. PMID 25473158. "Trimethylamine is exclusively a microbiota-derived product of nutrients (lecithin, choline, TMAO, L-carnitine) from normal diet, from which seems originate two diseases, trimethylaminuria (or Fish-Odor Syndrome) and cardiovascular disease through the proatherogenic property of its oxidized liver-derived form.". 
  13. ↑ "Human trace amine-associated receptor TAAR5 can be activated by trimethylamine". PLOS ONE 8 (2): e54950. 2013. doi:10.1371/journal.pone.0054950. PMID 23393561. Bibcode: 2013PLoSO...854950W. 
  14. ↑ "Ultrasensitive detection of amines by a trace amine-associated receptor". J. Neurosci. 33 (7): 3228–39. February 2013. doi:10.1523/JNEUROSCI.4299-12.2013. PMID 23407976. "We show that [human TAAR5] responds to the tertiary amine N,N-dimethylethylamine and to a lesser extent to trimethylamine, a structurally related agonist for mouse and rat TAAR5 (Liberles and Buck, 2006; Staubert et al., 2010; Ferrero et al., 2012)". 
  15. ↑ 15.0 15.1 "Microbial metabolism of dietary components to bioactive metabolites: opportunities for new therapeutic interventions". Genome Med 8 (1): 46. April 2016. doi:10.1186/s13073-016-0296-x. PMID 27102537. 
    Table 2: Microbial metabolites: their synthesis, mechanisms of action, and effects on health and disease
    Figure 1: Molecular mechanisms of action of indole and its metabolites on host physiology and disease
  16. ↑ 16.0 16.1 "Trace amine-associated receptors: ligands, neural circuits, and behaviors". Curr. Opin. Neurobiol. 34: 1–7. October 2015. doi:10.1016/j.conb.2015.01.001. PMID 25616211. 
  17. ↑ Wills, M. R.; Savory, J. (1981). "Biochemistry of renal failure". Annals of Clinical and Laboratory Science 11 (4): 292–9. PMID 7023344. 
  18. ↑ "Gifte und Vergiftungen. Vierte Ausgabe des Lehrbuches der Toxikologie. Von Prof. Louis Lewin. Mit 41 Figuren und einer farbigen Spektraltafel. Berlin 1929. Verlag von Georg Stilke. 1087 Seiten. Preis geh. 50,— Mark, geb. 55,— Mark". Archiv der Pharmazie 267 (4): 322–323. 1929. doi:10.1002/ardp.19292670410. ISSN 0365-6233. 
  19. ↑ Jaworska, Kinga; Bielinska, Klaudia; Gawrys-Kopczynska, Marta; Ufnal, Marcin (2019-08-27). "TMA (trimethylamine), but not its oxide TMAO (trimethylamine-oxide), exerts hemodynamic effects - implications for interpretation of cardiovascular actions of gut microbiome.". Cardiovascular Research 115 (14): 1948–1949. doi:10.1093/cvr/cvz231. ISSN 0008-6363. PMID 31504256. 
  20. ↑ Jaworska, Kinga; Hering, Dagmara; Mosieniak, Grażyna; Bielak-Zmijewska, Anna; Pilz, Marta; Konwerski, Michał; Gasecka, Aleksandra; Kapłon-Cieślicka, Agnieszka et al. (2019-08-26). "TMA, A Forgotten Uremic Toxin, but Not TMAO, Is Involved in Cardiovascular Pathology". Toxins 11 (9): 490. doi:10.3390/toxins11090490. ISSN 2072-6651. PMID 31454905. 
  21. ↑ Directorate-General for Employment, Social Affairs and Inclusion (European Commission); Scientific Committee on Occupational Exposure Limits; Nielsen, G. D.; Pospischil, E.; Johanson, G.; Klein, C. L.; Papameletiou, D. (2017). SCOEL/REC/179 trimethylamine: recommendation from the Scientific Committee on Occupational Exposure Limits. LU: Publications Office of the European Union. doi:10.2767/440659. ISBN 978-92-79-66627-8. OCLC 1032584642. https://data.europa.eu/doi/10.2767/440659. 
  22. ↑ Pearson, Arthur W.; Butler, Edward J.; Curtis, R. Frank; Fenwick, G. Roger; Hobson-Frohock, Anthony; Land, Derek G. (1979). "Effect of rapeseed meal on trimethylamine metabolism in the domestic fowl in relation to egg taint". Journal of the Science of Food and Agriculture 30 (8): 799–804. doi:10.1002/jsfa.2740300809. Bibcode: 1979JSFA...30..799P. 
  23. ↑ Lichovníková, M.; Zeman, L.; Jandásek, J. (2008). "The effect of feeding untreated rapeseed and iodine supplement on egg quality". Czech Journal of Animal Science 53 (2): 77–82. doi:10.17221/330-CJAS. http://www.agriculturejournals.cz/publicFiles/00744.pdf. Retrieved 19 December 2016. 
  24. ↑ Sigmund Freud, Standard Ed., 4:116-119.

External links



Retrieved from "https://handwiki.org/wiki/index.php?title=Chemistry:Trimethylamine&oldid=3325618"