TFA (Trifluoroacetic Acid)

CAS Number76-05-1
Molecular FormulaC2HF3O2
Molecular Weight114.023
InChI KeyDTQVDTLACAAQTR-UHFFFAOYSA-N
LogP0.766
Synonyms
  • Acetic acid, trifluoro-
  • Trifluoroacetic acid
  • Acetic acid, 2,2,2-trifluoro-
  • 76-05-1
  • 4-02-00-00458
  • 2,2,2-Trifluoroacetic acid
  • Acetic acid, 2,2,2-trifluoro-
  • Acide trifluoroacetique
  • acido trifluoroacetico
  • NSC 77366
  • Perfluoroacetic acid
  • TRIFLUORESSIGSAEURE
  • Trifluoressigsaure
  • trifluoroacetic acid
  • Trifluoroethanoic acid
  • UN 2699
  • BRN 0742035
  • EINECS 200-929-3
  • Trifluoracetic acid
  • Kyselina trifluoroctova
  • UNII-E5R8Z4G708

Applications:

HPLC ELSD Method for Analysis Trifluoroacetic acid on Primesep B4 Column

February 2, 2024

HPLC Method for Analysis of TFA (Trifluoroacetic Acid) on Primesep B4 by SIELC Technologies

HPLC ELSD Method for Analysis Trifluoroacetic acid on Primesep B4 Column
HPLC Method for Analysis of TFA (Trifluoroacetic Acid) on Primesep B4 Column by SIELC Technologies


 High Performance Liquid Chromatography (HPLC) Method for Analysis of TFA (Trifluoroacetic Acid)

Trifluoroacetic acid (TFA) is a strong organic acid with the chemical formula CF₃COOH.

Properties:

  • TFA is a colorless liquid at room temperature.
  • It is a highly corrosive and volatile acid.
  • It is miscible with common organic solvents.

Uses:

  • Trifluoroacetic acid is commonly used in organic chemistry as a reagent, particularly in peptide synthesis and purification.
  • It is used as a strong acid in various chemical reactions.
  • TFA is also employed in the analysis of compounds by nuclear magnetic resonance (NMR) spectroscopy.

Precautions:

  • Due to its corrosive nature, trifluoroacetic acid should be handled with care, and appropriate safety measures should be taken, including the use of protective equipment.

Trifluoroacetic acid can be retained and analyzed using an Primesep B4 mixed-mode stationary phase column. The analysis employs an isocratic method with a simple mobile phase consisting of water, acetonitrile (MeCN), and ammonium formate as a buffer. Detection is achieved using ELSD

ColumnPrimesep B4, 4.6 x 150 mm, 5 µm, 100 A
Mobile PhaseMeCN/H2O – 70/30%
BufferAmmonium formate pH 3.0 – 60 mM
Flow Rate1.0 ml/min
DetectionELSD, the nebulizer and evaporator temperatures 50°C,
 with a gas flow rate of 1.6 Standard Liters per Minute (SLM)
Samples1 mg/ml
Injection volume3 µl
LOD*1 ppm
* LOD was determined for this combination of instrument, method, and analyte, and it can vary from one laboratory to another even when the same general type of analysis is being performed.

Class of Compounds
Quaternity amines
Analyzing CompoundsTFA (Trifluoroacetic Acid)

Application Column

Primesep B4

Column Diameter: 4.6 mm
Column Length: 150 mm
Particle Size: 5 µm
Pore Size: 100 A

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Application Analytes:
TFA (Trifluoroacetic Acid)

Application Detection:
ELSD Detection
SIELC Technologies usually develops more than one method for each compound. Therefore, this particular method may not be the best available method from our portfolio for your specific application. Before you decide to implement this method in your research, please send us an email to research@sielc.com so we can ensure you get optimal results for your compound/s of interest.

HPLC Method for Analysis of Inorganic anions on BIST™A+ Column

July 7, 2022

 

Separation type: Bridge Ion Separation Technology, or BIST™
 

High Performance Liquid Chromatography (HPLC) Method for Analysis of Inorganic anions, Chloride, Bromide, Nitrate, Iodide,  Perchlorate

Using SIELC’s newly introduced BIST™ method, a mixture of many different inorganic anions can be separated on a negatively-charged, cation-exchange BIST™ A column, contrary to conventional chromatographic wisdom. There are two keys to this retention method: 1) a multi-charged, positive buffer, such as N,N,N’,N’-Tetramethyl-1,3-propanediamine (TMDAP), which acts as a bridge, linking the negatively-charged anion analytes to the negatively-charged column surface and 2) a mobile phase consisting mostly of organic solvent (such as MeCN) to minimize the formation of a solvation layer around the charged analytes. Other positively-charged buffers that can generate BIST™ include Calcium acetate and Magnesium acetate. Using this new and unique analysis method, these anions can be separated, retained, and detected through ELSD. This method is also compatible with Mass Spectrometry.

Condition

Column BIST™ A+, 4.6×50 mm, 5µm, 100A
Mobile Phase MeCN – 90%
Buffer TMDAP ( N,N,N’,N’-Tetramethyl-1,3-diaminopropane) formate – 5 mM pH 4.0
Flow Rate 1.0 ml/min
Detection ELSD, 70C

 

Description

Class of Compounds
 Acid, Inorganic anion
Analyzing Compounds Chloride, Bromide, Nitrate, Iodide,  Perchlorate, TFA, Methanesulfonic acid

Application Column

BIST A

BIST™ columns offer a unique and effective way to achieve separations that were traditionally challenging or even impossible with other HPLC columns. With the use of a special mobile phase, these ion exchange columns provide very strong retention for analytes with the same charge polarity as the stationary phase, unlocking new chromatography applications. What makes BIST™ columns stand out is their proprietary surface chemistry, which results in superior selectivity, resolution, and sensitivity. These columns offer a simple, efficient solution for a variety of analytical challenges, making them an excellent choice for researchers and analysts across many different fields. To learn more about the technology that powers BIST™ columns and to explore related applications, check out https://BIST.LC.

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BIST A+

BIST™ columns offer a unique and effective way to achieve separations that were traditionally challenging or even impossible with other HPLC columns. With the use of a special mobile phase, these ion exchange columns provide very strong retention for analytes with the same charge polarity as the stationary phase, unlocking new chromatography applications. What makes BIST™ columns stand out is their proprietary surface chemistry, which results in superior selectivity, resolution, and sensitivity. These columns offer a simple, efficient solution for a variety of analytical challenges, making them an excellent choice for researchers and analysts across many different fields. To learn more about the technology that powers BIST™ columns and to explore related applications, check out https://BIST.LC.

Select options
Application Analytes:
Bromide
Chloride
Iodide
Methanesulfonic Acid
Nitrate
Perchlorate
TFA (Trifluoroacetic Acid)
SIELC Technologies usually develops more than one method for each compound. Therefore, this particular method may not be the best available method from our portfolio for your specific application. Before you decide to implement this method in your research, please send us an email to research@sielc.com so we can ensure you get optimal results for your compound/s of interest.

HPLC Method for Analysis of Fluoroacetic acid, Difluoroacetic acid and Trifluoroacetic acid on BIST A+ Column

July 7, 2022

 

Separation type: Bridge Ion Separation Technology, or BIST™
 

HPLC Method for Analysis of Fluoroacetic acid, Difluoroacetic acid and Trifluoroacetic acid on BIST A+ Column

High Performance Liquid Chromatography (HPLC) Method for Analysis of  Fluoroacetic acid, Difluoroacetic acid and Trifluoroacetic acid

Condition

Column BIST A+, 2.1×100 mm, 3 µm, 100A
Mobile Phase MeCN – 90%
Buffer TMDAP ( N,N,N’,N’-Tetramethyl-1,3-diaminopropane) formate – 5 mM pH 4.0
Flow Rate 0.4 ml/min
Detection Conductivity

 

Description

Class of Compounds
Acids
Analyzing Compounds Fluoroacetic acid, Difluoroacetic acid and Trifluoroacetic acid

Application Column

BIST A+

BIST™ columns offer a unique and effective way to achieve separations that were traditionally challenging or even impossible with other HPLC columns. With the use of a special mobile phase, these ion exchange columns provide very strong retention for analytes with the same charge polarity as the stationary phase, unlocking new chromatography applications. What makes BIST™ columns stand out is their proprietary surface chemistry, which results in superior selectivity, resolution, and sensitivity. These columns offer a simple, efficient solution for a variety of analytical challenges, making them an excellent choice for researchers and analysts across many different fields. To learn more about the technology that powers BIST™ columns and to explore related applications, check out https://BIST.LC.

Select options
Application Analytes:
Difluoroacetic acid
Fluoroacetic acid
TFA (Trifluoroacetic Acid)
SIELC Technologies usually develops more than one method for each compound. Therefore, this particular method may not be the best available method from our portfolio for your specific application. Before you decide to implement this method in your research, please send us an email to research@sielc.com so we can ensure you get optimal results for your compound/s of interest.

HPLC Separation of Acetic acid, Chloroacetic acid, Dichloroacetic acid, Trifluoroacetic acid, Trichloroacetic acid

May 20, 2020


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Acetic acid and its substitution derivatives, chloroacetic acid, dichloroacetic acid, trichloroacetic acid, difluoroacetic acid and trifluoroacetic acid, are heavily used as building blocks for more complex compounds in organic synthesis. All six acids can be isocratically separated in HPLC using Newcrom BH mixed-mode column with acetonitrile (ACN) and water mobile phase with sulfuric acid (H2SO4) as buffer and UV detected at 200nm.

Condition

Column Newcrom BH, 4.6×150 mm, 5 µm, 100A
Mobile Phase MeCN/H2O – 50/50%
Buffer H2SO4 – 0.2%
Flow Rate 1.0 ml/min
Detection UV 200nm

Description

Class of Compounds Acid
Analyzing Compounds Acetic acid, Chloroacetic acid, Dichloroacetic acid, Trifluoroacetic acid (TFA),   Trichloroacetic acid

Application Column

Newcrom BH

The Newcrom columns are a family of reverse-phase-based columns. Newcrom A, AH, B, and BH are all mixed-mode columns with either positive or negative ion-pairing groups attached to either short (25 Å) or long (100 Å) ligand chains. Newcrom R1 is a special reverse-phase column with low silanol activity.

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Application Analytes:
Acetic Acid
Chloroacetic acid
Dichloroacetic acid
Difluoroacetic acid
TFA (Trifluoroacetic Acid)
Trichloroacetic acid
SIELC Technologies usually develops more than one method for each compound. Therefore, this particular method may not be the best available method from our portfolio for your specific application. Before you decide to implement this method in your research, please send us an email to research@sielc.com so we can ensure you get optimal results for your compound/s of interest.

HPLC Separation of Haloacetic acids on Newcrom BH Column

May 20, 2020


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Condition

Column Newcrom BH, 4.6×150 mm, 5 µm, 100A
Mobile Phase MeCN/H2O – 50/50%
Buffer H2SO4 – 0.5%
Flow Rate 1.0 ml/min
Detection UV 200nm

Description

Class of Compounds Acid
Analyzing Compounds Dichloroacetic acid, Trifluoroacetic acid (TFA),   Trichloroacetic acid

Application Column

Newcrom BH

The Newcrom columns are a family of reverse-phase-based columns. Newcrom A, AH, B, and BH are all mixed-mode columns with either positive or negative ion-pairing groups attached to either short (25 Å) or long (100 Å) ligand chains. Newcrom R1 is a special reverse-phase column with low silanol activity.

Select options
Application Analytes:
Dichloroacetic acid
TFA (Trifluoroacetic Acid)
Trichloroacetic acid
SIELC Technologies usually develops more than one method for each compound. Therefore, this particular method may not be the best available method from our portfolio for your specific application. Before you decide to implement this method in your research, please send us an email to research@sielc.com so we can ensure you get optimal results for your compound/s of interest.

HPLC Determination of TFA on Newcrom BH Column

May 19, 2020


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Trifluoroacetic acid (TFA) is a substitution derivative of acetic acid, with fluorine atoms replacing the hydrogen atoms of the acetyl group. It is also a much stronger acid than acetic acid. TFA is widely used in organic synthesis as well as ion pairing reagent or buffer in HPLC. TFA can be detected at low UV. Using Newcrom BH mixed-mode column, a mobile phase of acetonitrile (ACN) and water with sulfuric acid (H2SO4) buffer can be used to retain TFA and UV detect it at 200nm.

Condition

Column Newcrom BH, 4.6×150 mm, 5 µm, 100A
Mobile Phase MeCN/H2O – 50/50%
Buffer H2SO4 – 0.5%
Flow Rate 1.0 ml/min
Detection UV 200nm

Description

Class of Compounds Acid
Analyzing Compounds Trifluoroacetic acid (TFA)

Application Column

Newcrom BH

The Newcrom columns are a family of reverse-phase-based columns. Newcrom A, AH, B, and BH are all mixed-mode columns with either positive or negative ion-pairing groups attached to either short (25 Å) or long (100 Å) ligand chains. Newcrom R1 is a special reverse-phase column with low silanol activity.

Select options
Application Analytes:
TFA (Trifluoroacetic Acid)
SIELC Technologies usually develops more than one method for each compound. Therefore, this particular method may not be the best available method from our portfolio for your specific application. Before you decide to implement this method in your research, please send us an email to research@sielc.com so we can ensure you get optimal results for your compound/s of interest.

HPLC Analysis of Trifluoroacetic and Acetic Acid on Obelisc N Mixed-Mode HPLC Column

May 11, 2015

Separation type: Liquid Chromatography Mixed-mode








Trifluoroacetic acid (TFA) and acetic acid (AcOH) are very commonly used in organic chemistry. They were separated using an Obelisc N column which uses HILIC/anion-exchange. The mixed-mode of Obelisc N allows for better peak shape and retention of carboxylic acids. Sulfuric acid was used to enhance polar retention by suppressing ionization of the strong acid TFA.

 



Condition

Column Obelisc N, 4.6×150 mm, 5 µm, 100A
Mobile Phase MeCN – 60%
Buffer H2SO4 – 0.05%
Flow Rate 1.0 ml/min
Detection UV, 210 nm

 

Description

Class of Compounds
 Acid, Hydrophilic, Ionizable
Analyzing Compounds Trifluoroacetic acid (TFA), Acetic acid (AcOH)

 

Application Column

Obelisc N

SIELC has developed the Obelisc™ columns, which are mixed-mode and utilize Liquid Separation Cell technology (LiSC™). These cost-effective columns are the first of their kind to be commercially available and can replace multiple HPLC columns, including reversed-phase (RP), AQ-type reversed-phase, polar-embedded group RP columns, normal-phase, cation-exchange, anion-exchange, ion-exclusion, and HILIC (Hydrophilic Interaction Liquid Chromatography) columns. By controlling just three orthogonal method parameters - buffer concentration, buffer pH, and organic modifier concentration - users can adjust the column properties with pinpoint precision to separate complex mixtures.

Select options
Application Analytes:
Acetic Acid
TFA (Trifluoroacetic Acid)

Application Detection:
UV Detection
SIELC Technologies usually develops more than one method for each compound. Therefore, this particular method may not be the best available method from our portfolio for your specific application. Before you decide to implement this method in your research, please send us an email to research@sielc.com so we can ensure you get optimal results for your compound/s of interest.

HPLC Separation of Inorganic Anions

November 21, 2010


Organic and inorganic acids and ions can be separated on a Primesep B4 column based on their ionic properties. Method can be used for quantitation of residual acids in various products and sample matrices. Trifluoracetic, hydrochloric, methanesulfonic, and nitric acids are separated using ACN-water-ammonium formate. Ions can be detected by ELSD, CAD or LC/MS.

Condition

Column Primesep B4, 4.6×150 mm, 5 µm, 100A
Mobile Phase MeCN/H2O
Buffer AmFm
Flow Rate 1.0 ml/min
Detection ELSD

 

Description

Class of Compounds
Ions, Hydrophilic, Ionizable
Analyzing Compounds Sodium, Phosphate, Chloride,  Nitrate, Sulfate, Iodide, Perchlorate, Trifluoracetic

 

Application Column

Primesep B4

The Primesep family of mixed-mode columns offers a wide variety of stationary phases, boasting unprecedented selectivity in the separation of a broad array of chemical compounds across multiple applications. Corresponding Primesep guard columns, available with all stationary phases, do not require holders. SIELC provides a method development service available to all customers. Inquire about our specially-tailored custom LC-phases for specific separations.

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Application Analytes:
Hydrochloric Acid
Methanesulfonic Acid
Nitrate
Nitric Acid
Organic Acids
Perchloric Acid
TFA (Trifluoroacetic Acid)

Application Detection:
ELSD Detection
SIELC Technologies usually develops more than one method for each compound. Therefore, this particular method may not be the best available method from our portfolio for your specific application. Before you decide to implement this method in your research, please send us an email to research@sielc.com so we can ensure you get optimal results for your compound/s of interest.

HPLC Analysis of Components of Ionic Liquids by Mixed-Mode Chromatography

September 14, 2008

Ionic liquid is an ionic compound which is liquid at room (or close to room) temperature. Most of the ionic liquids are in a dynamic equilibrium where at any time more than 99.99% of the liquid is made up of ionic, rather than molecular, species. Room-temperature ionic liquids consist of bulky cation (for example, substituted imidazolium) compounds. A wide range of anions is used as counter ions in ionic liquids: organic and inorganic anions such as chloride, iodide, tetrafluoroborate, hexafluorophosphate, bistriflimide, triflate, tosylate. Ionic liquids are widely used as solvents in organic reactions. When products are isolated from ionic liquids, they need to be analyzed for residual ionic liquid content.
Because both constituents of the ionic liquid are very different in terms of charge and hydrophobic properties, it is impossible to analyze entire ionic liquids by traditional chromatography. An effective and universal method for analysis of ionic liquids is developed on an Obelisc R HPLC column. Components on the ionic liquids are retained based on ionic and hydrophobic interactions. Obelisc R column has both positively and negatively charged ionic groups, making it possible to retain and separate cations and anions of ionic liquids on one column. Method can be used for quantitative of various ionic liquids containing organic and inorganic ions. Retention time of basic component can be effectively adjusted by pH, stronger anionic and hydrophobic counter-ions might require higher buffer concentration. Composition can be monitored by combination of UV and ELSD or by LC/MS.

Condition

Column Obelisc R , 4.6×150 mm, 5 µm, 100A
Mobile Phase MeCN/H2O
Buffer AmAc 
Flow Rate 1.0 ml/min
Detection ELSD

 

Description

Class of Compounds
Acid
Analyzing Compounds 1-Methyl-3-propylimidazolium, Bromide Ion, Methylsulfonic Acid, Trifluoroacetic Acid, Perchloric Acid, p-Toluenesulfonic Acid

Application Column

Obelisc R

SIELC has developed the Obelisc™ columns, which are mixed-mode and utilize Liquid Separation Cell technology (LiSC™). These cost-effective columns are the first of their kind to be commercially available and can replace multiple HPLC columns, including reversed-phase (RP), AQ-type reversed-phase, polar-embedded group RP columns, normal-phase, cation-exchange, anion-exchange, ion-exclusion, and HILIC (Hydrophilic Interaction Liquid Chromatography) columns. By controlling just three orthogonal method parameters - buffer concentration, buffer pH, and organic modifier concentration - users can adjust the column properties with pinpoint precision to separate complex mixtures.

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Application Analytes:
1-Methyl-3-Propylimidazolium
Bromide
Ionic Liquid
Methylsulfonic Acid
Perchloric Acid
TFA (Trifluoroacetic Acid)
p-Toluenesulfonic Acid (PTSA)

Application Detection:
ELSD Detection
UV Detection
SIELC Technologies usually develops more than one method for each compound. Therefore, this particular method may not be the best available method from our portfolio for your specific application. Before you decide to implement this method in your research, please send us an email to research@sielc.com so we can ensure you get optimal results for your compound/s of interest.

Retention of TFA on Atlantis and Obelisc N

August 22, 2008

Trifluoroacetic acid (TFA) is a strong carboxylic acid, with pKa of 0.3. TFA is widely used in chemistry as reagent and as counter-ion for basic drugs and other compounds. TFA is very polar in nature, and has low UV activity. It is often required to quantitate trifluoracetic acid in various formulations. HPLC method for determination of trifluoroacetic acid on Obelisc N column provides a viable alternative for quantitation of TFA. TFA is retained by ion-exchange mechanism on mixed-mode HILIC column. Relative comparison shows high loadability of the method. Obelisc N columns show much better peak shape and retention than traditional HPLC columns (Atlantis T3 from Waters). Perfect peak symmetry is achieved by adjusting amount of acetonitrile, buffer pH and buffer concentration. TFA is monitored by low UV (200 nm). Alternatively trifluoroacetic acid can be analyzed by ESLD with ammonium formate in the mobile phase. TFA forms non-volatile salt with ammonia, thus giving ability to quantitate it.

Application Column

Obelisc N

SIELC has developed the Obelisc™ columns, which are mixed-mode and utilize Liquid Separation Cell technology (LiSC™). These cost-effective columns are the first of their kind to be commercially available and can replace multiple HPLC columns, including reversed-phase (RP), AQ-type reversed-phase, polar-embedded group RP columns, normal-phase, cation-exchange, anion-exchange, ion-exclusion, and HILIC (Hydrophilic Interaction Liquid Chromatography) columns. By controlling just three orthogonal method parameters - buffer concentration, buffer pH, and organic modifier concentration - users can adjust the column properties with pinpoint precision to separate complex mixtures.

Select options
Application Analytes:
TFA (Trifluoroacetic Acid)

Application Detection:
UV Detection
SIELC Technologies usually develops more than one method for each compound. Therefore, this particular method may not be the best available method from our portfolio for your specific application. Before you decide to implement this method in your research, please send us an email to research@sielc.com so we can ensure you get optimal results for your compound/s of interest.

HPLC Analysis of TFA

July 5, 2008

Dual functionality of Obelisc N column allows to retain and provide efficient peaks of strong carboxylic acids such as TFA. Simple UV quantitation and identification method became possible due to the unique properties of this stationary phase. In case of an RP separation poor retention and peak symmetry was obtained at a very low concentration of ACN. Sulfuric acid was used to suppress ionization of TFA to increase the hydrophobicity. In case of a typical HILIC column the phosphoric acid was used to increase ionization to make TFA more polar to enhance polar retention. The types of columns that do not have the mixed mode nature of Obelisc N can’t provide significant retention and efficiency.

Application Column

Obelisc N

SIELC has developed the Obelisc™ columns, which are mixed-mode and utilize Liquid Separation Cell technology (LiSC™). These cost-effective columns are the first of their kind to be commercially available and can replace multiple HPLC columns, including reversed-phase (RP), AQ-type reversed-phase, polar-embedded group RP columns, normal-phase, cation-exchange, anion-exchange, ion-exclusion, and HILIC (Hydrophilic Interaction Liquid Chromatography) columns. By controlling just three orthogonal method parameters - buffer concentration, buffer pH, and organic modifier concentration - users can adjust the column properties with pinpoint precision to separate complex mixtures.

Select options
Application Analytes:
TFA (Trifluoroacetic Acid)

Application Detection:
UV Detection
SIELC Technologies usually develops more than one method for each compound. Therefore, this particular method may not be the best available method from our portfolio for your specific application. Before you decide to implement this method in your research, please send us an email to research@sielc.com so we can ensure you get optimal results for your compound/s of interest.