Triethylenetetramine

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Triethylenetetramine
Skeletal formula of triethylenetetramine
Ball and stick model of triethylenetetramine
Spacefill model of triethylenetetramine
Identifiers
CAS number112-24-3 YesY
PubChem5565
ChemSpider21106175 YesY
UNIISJ76Y07H5F YesY
EC number203-950-6
UN number2259
KEGGC07166 YesY
MeSHTrientine
ChEBICHEBI:39501 YesY
ChEMBLCHEMBL609 YesY
RTECS numberYE6650000
Beilstein Reference605448
Gmelin Reference27008
Jmol-3D imagesImage 1
Properties
Molecular formulaC6H18N4
Molar mass146.23 g mol−1
AppearanceColourless liquid
OdorIchtyal, ammoniacal
Density982 mg mL−1
Melting point−34.6 °C; −30.4 °F; 238.5 K
Boiling point266.6 °C; 511.8 °F; 539.7 K
Solubility in waterMiscible
log P1.985
Vapor pressure<1 Pa (at 20 °C)
Refractive index (nD)1.496
Thermochemistry
Specific
heat capacity
C
376 J K−1 mol−1 (at 60 °C)
Hazards
GHS pictogramsThe corrosion pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) The exclamation-mark pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)
GHS signal wordDANGER
GHS hazard statementsH312, H314, H317, H412
GHS precautionary statementsP273, P280, P305+351+338, P310
EU Index612-059-00-5
EU classificationCorrosive C
R-phrasesR21, R34, R43, R52/53
S-phrases(S1/2), S26, S36/37/39, S45
Flash point129 °C (264 °F; 402 K)
LD50
  • 550 mg kg−1 (dermal, rabbit)
  • 2.5 g kg−1 (oral, rat)
Related compounds
Related amines
Related compounds
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 YesY (verify) (what is: YesY/N?)
Infobox references
 
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Triethylenetetramine
Skeletal formula of triethylenetetramine
Ball and stick model of triethylenetetramine
Spacefill model of triethylenetetramine
Identifiers
CAS number112-24-3 YesY
PubChem5565
ChemSpider21106175 YesY
UNIISJ76Y07H5F YesY
EC number203-950-6
UN number2259
KEGGC07166 YesY
MeSHTrientine
ChEBICHEBI:39501 YesY
ChEMBLCHEMBL609 YesY
RTECS numberYE6650000
Beilstein Reference605448
Gmelin Reference27008
Jmol-3D imagesImage 1
Properties
Molecular formulaC6H18N4
Molar mass146.23 g mol−1
AppearanceColourless liquid
OdorIchtyal, ammoniacal
Density982 mg mL−1
Melting point−34.6 °C; −30.4 °F; 238.5 K
Boiling point266.6 °C; 511.8 °F; 539.7 K
Solubility in waterMiscible
log P1.985
Vapor pressure<1 Pa (at 20 °C)
Refractive index (nD)1.496
Thermochemistry
Specific
heat capacity
C
376 J K−1 mol−1 (at 60 °C)
Hazards
GHS pictogramsThe corrosion pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) The exclamation-mark pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)
GHS signal wordDANGER
GHS hazard statementsH312, H314, H317, H412
GHS precautionary statementsP273, P280, P305+351+338, P310
EU Index612-059-00-5
EU classificationCorrosive C
R-phrasesR21, R34, R43, R52/53
S-phrases(S1/2), S26, S36/37/39, S45
Flash point129 °C (264 °F; 402 K)
LD50
  • 550 mg kg−1 (dermal, rabbit)
  • 2.5 g kg−1 (oral, rat)
Related compounds
Related amines
Related compounds
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 YesY (verify) (what is: YesY/N?)
Infobox references

Triethylenetetramine, abbreviated TETA and trien, is an organic compound with the formula [CH2NHCH2CH2NH2]2. This oily liquid is colourless but, like many amines, assumes a yellowish color due to impurities resulting from air-oxidation. It is soluble in polar solvents and exhibits the reactivity typical for amines. The branched isomer N(CH2CH2NH2)3 and piperazine derivatives also comprise commercial samples of TETA.[1]

Production[edit]

Triethylenetetramine is prepared by heating ethylenediamine or ethanolamine/ammonia mixtures over an oxide catalyst. This process gives a variety of amines, which are separated by distillation and sublimation.[2]

Uses[edit]

The reactivity and uses of TETA are similar to those for the related polyamines ethylenediamine and diethylenetriamine. It was primarily used as a crosslinker ("hardener") in epoxy curing.[2]

The hydrochloride salt of triethylenetetramine, referred to as trientine hydrochloride, is a chelating agent, and is used to bind up and remove copper in the body to treat Wilson's disease, particularly in those who are intolerant to penicillamine. Some recommend trientine as first-line treatment, but experience with penicillamine is more extensive.[3]

Coordination chemistry[edit]

Triethylenetetramine is a tetradentate ligand in coordination chemistry, where it is referred to as trien.[4] Octahedral complexes of the type M(trien)Cl3 can adopt several diastereomeric structures, most of which are chiral.[5]

References[edit]

  1. ^ http://www.huntsman.com/portal/page/portal/performance_products/Media%20Library/a_MC348531CFA3EA9A2E040EBCD2B6B7B06/Products_MC348531D0B9FA9A2E040EBCD2B6B7B06/Amines_MC348531D0BECA9A2E040EBCD2B6B7B06/Ethyleneamines_MC348531D0CD3A9A2E040EBCD2B6B7B06/files/ethyleneamines_brochure_huntsman_ethyleneamines.pdf
  2. ^ a b Eller, K.; Henkes, E.; Rossbacher, R.; Höke, H. (2005). "Amines, Aliphatic". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a02_001. 
  3. ^ Roberts, E. A.; Schilsky, M. L. (2003). "A practice guideline on Wilson disease" (pdf). Hepatology 37 (6): 1475–1492. doi:10.1053/jhep.2003.50252. PMID 12774027. 
  4. ^ von Zelewsky, A. (1995). Stereochemistry of Coordination Compounds. Chichester: John Wiley. ISBN 047195599X. 
  5. ^ Utsuno, S.; Sakai, Y.; Yoshikawa, Y.; Yamatera, H. (1985). "Three Isomers of the Trans-Diammine-[N,N′-bis(2-Aminoethyl)-1,2-Ethanediamine]-Cobalt(III) Complex Cation". Inorganic Syntheses 23: 79–82. doi:10.1002/9780470132548.ch16.