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90279 Sigma-Aldrich

Triethanolamine

≥99.0% (GC)

Synonym: 2,2′,2′′-Nitrilotriethanol, Tris(2-hydroxyethyl)amine

  • CAS Number 102-71-6

  • Linear Formula (HOCH2CH2)3N

  • Molecular Weight 149.19

  •  Beilstein/REAXYS Number 1699263

  •  EC Number 203-049-8

  •  MDL number MFCD00002855

  •  PubChem Substance ID 57653380

  •  NACRES NA.25

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Properties

Related Categories Biochemicals and Reagents, Biological Buffers, Buffer Convenience Packaging, Buffer Solutions, Buffers A to Z More...
Quality Level   200
vapor density   5.14 (vs air)
vapor pressure   0.01 mmHg ( 20 °C)
assay   ≥99.0% (GC)
form   liquid
  viscous liquid
autoignition temp.   600 °F
expl. lim.   8.5 %
impurities   ≤0.1% ethanolamine (GC)
  ≤0.2% water
  ≤0.3% diethanolamine (GC)
refractive index   n20/D 1.485 (lit.)
pH   10.5-11.5 (25 °C, 149 g/L)
useful pH range   7.3 - 8.3
pKa (25 °C)   7.8
bp   190-193 °C/5 mmHg (lit.)
mp   17.9-21 °C (lit.)
solubility   H2O: 1 M, clear, colorless
density   1.124 g/mL at 25 °C (lit.)
anion traces   chloride (Cl-): ≤5 mg/kg
  sulfate (SO42-): ≤20 mg/kg
cation traces   Ca: ≤5 mg/kg
  Cd: ≤1 mg/kg
  Co: ≤1 mg/kg
  Cr: ≤1 mg/kg
  Cu: ≤1 mg/kg
  Fe: ≤1 mg/kg
  K: ≤20 mg/kg
  Mg: ≤1 mg/kg
  Mn: ≤1 mg/kg
  Ni: ≤1 mg/kg
  Pb: ≤1 mg/kg
  Zn: ≤1 mg/kg
SMILES string   OCCN(CCO)CCO
InChI   1S/C6H15NO3/c8-4-1-7(2-5-9)3-6-10/h8-10H,1-6H2
InChI key   GSEJCLTVZPLZKY-UHFFFAOYSA-N

Description

General description

Triethanolamine (TEA) belongs to the family of ethanolamine. It includes the properties of both amines and alcohols. Addition of TEA to an acidic buffer facilitates the determination of fluoride in inorganic orthophosphates by using a fluoride-selective electrode.

Application

Triethanolamine (TEA) has been used:
• as a component of the acetylation working solution
• in the preparation of polyethylene glycol (PEG) hydrogels
• as a constituent of CO2/O2 specificity (SC/O) assay buffer

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
WGK 1
RTECS 
KL9275000
Flash Point(F) 
354.2 °F - closed cup
Flash Point(C) 
179 °C - closed cup

pHast Pack
Protocols & Articles

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Peer-Reviewed Papers
15

References

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