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Triethylamine (TEA)

Ideal for HPLC separation and analysis of peptides.

Pierce Triethylamine (TEA)

Thermo Scientific Pierce Triethylamine (TEA) is a high-purity solvent that can be used in certain HPLC protocols, such as weak anion exchange to resolve certain tryptic peptides on a reverse-phase column.

Triethylamine is an ion-pairing reagent that alters selectivity in reverse-phase HPLC separations. By pairing with peptides, it effectively sharpens peaks, resulting in improved peak resolution. Pierce Triethylamine has low UV absorbance properties to provide sensitive detection across all wavelengths when used as an ion-pair reagent in HPLC separations. The reagent is designed and tested to meet the special requirements for peptide sequencing and analysis.


  • Greater than 99.5% triethylamine purity, allowing sensitive peptide detection at low UV wavelengths in reverse-phase HPLC peptide separation systems
  • Packaged in amber glass bottles with protective PTFE-lined fluorocarbon caps for reagent integrity

Product Details:

Chemical structure of TEA, triethylamine

General properties of triethylamine.
Alternative names TEA, Diethylethanamine
Molecular formula C6H15N
Molecular weight 101.19
Density 0.726g/mL
CAS number 121-44-8

Pierce Triethylamine is specially purified and each lot is tested to the highest specifications to ensure the integrity of your data, maximize sensitivity in your assay and to prolong the life of your equipment.

Specifications of Pierce TEA.
Particulates Free from particulate matter
Purity > 99.5%
Water content < 0.2%
Ninhydrin positives A570 < 0.2 above blank

Related Products:

Dimethylsulfoxide (DMSO)
Dimethylformamide (DMF)
Trifluoroacetic acid (TFA)
Heptafluorobutyric acid (HFBA)

Ordering Information
Product # Description Pkg. Size Instructions MSDS CofA Price
25108 Triethylamine (TEA)
Formulation: Clear, colorless liquid of TEA (at least 99.5% pure; low water)
Sufficient For: Sequencing and liquid chromatography applications
100g MSDS for product #25108 Triethylamine (TEA) Certificate of Analysis for product #25108 Triethylamine (TEA) $107.00

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Instructions | MSDS | CofA
Product Instructions | MSDS | CofA  

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