90279

Triethanolamine

≥99.0% (GC)

• Synonym(s): 2,2′,2′′-Nitrilotriethanol, Tris(2-hydroxyethyl)amine
• Linear Formula: (HOCH₂CH₂)₃N
• CAS Number: 102-71-6
• Molecular Weight: 149.19
• Beilstein/REAXYS Number: 1699263
• EC Number: 203-049-8
• MDL number: MFCD00002855
• UNSPSC Code: 12161700
• PubChem Substance ID: 57653380
• NACRES: NA.25

Properties

• 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 (SO₄^2-): ≤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 Information

• Storage Class: 10 - Combustible liquids
• wgk_germany: WGK 1
• flash_point_f: 354.2 °F - closed cup
• flash_point_c: 179 °C - closed cup
• ppe: Eyeshields, Gloves, type ABEK (EN14387) respirator filter