33729

Triethanolamine

puriss. p.a., ≥99% (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: 1699263
• EC Number: 203-049-8
• MDL number: MFCD00002855
• UNSPSC Code: 12352100
• PubChem Substance ID: 57648906
• NACRES: NA.21

Properties

• vapor density: 5.14 (vs air)
• Quality Level: 200
• vapor pressure: 0.01 mmHg ( 20 °C)
• grade: puriss. p.a.
• Assay: ≥99% (GC)
• form: viscous liquid
• autoignition temp.: 600 °F
• expl. lim.: 8.5 %
• impurities: ≤0.0001% heavy metals (as Pb); ≤0.1% ethanolamine; ≤0.1% water (Karl Fischer); ≤0.5% diethanolamine (GC)
• ign. residue: ≤0.005% (as SO₄)
• refractive index: n20/D 1.485 (lit.)
• 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.)
• transition temp: solidification point 20-22 °C
• solubility: soluble 149 g/L at 20 °C (completely)
• density: 1.124 g/mL at 25 °C (lit.)
• anion traces: chloride (Cl^-): ≤1 mg/kg; sulfate (SO₄^2-): ≤20 mg/kg
• cation traces: Fe: ≤1 mg/kg
• functional group: amine; hydroxyl
• 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 ethanolamines. It includes the properties of both amines and alcohols.

Application

Triethanolamine may be used as a derivatizing reagent for the determination of boric acid in water samples using gas chromatography-mass spectrometry technique. Addition of triethanolamine to an acidic buffer facilitates the determination of fluoride in inorganic orthophosphates by using a fluoride-selective electrode.

Safety Information

• 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