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90279

Sigma-Aldrich

Triethanolamine

≥99.0% (GC)

Synonym(s):
Tris(2-hydroxyethyl)amine, 2,2′,2′′-Nitrilotriethanol
Linear Formula:
(HOCH2CH2)3N
CAS Number:
Molecular Weight:
149.19
Beilstein:
1699263
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.25

vapor density

5.14 (vs air)

Quality Level

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

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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

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

354.2 °F - closed cup

Flash Point(C)

179 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

Toxicology of mono-, di-, and triethanolamine
Knaak,JB, et al.
Reviews of Environmental Contamination and Toxicology, 1-86 (1997)
Enhancing the reliability and throughput of neurosphere culture on hydrogel microwell arrays
Cordey, M, et al.
Stem Cells, 2586-2594 (2008)
Rubisco Extraction and Purification from Diatoms
Young, J, et al.
Bio-protocol, 7, 2586-2594 (2017)
Sensitive fluorescent hybridisation protocol development for simultaneous detection of microRNA and cellular marker proteins (in the retina)
Kovacs VA, et al.
Histochemistry and Cell Biology, 150(5), 557-566 (2018)
The use of triethanolamine in a buffer for the determination of fluoride in calcium and transition metal orthophosphates, using a fluoride-selective el
Duff, Edward J and Stuart, JL
Talanta, 19(1), 74-76 (1972)

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