PMIDA (Phosphonomethyliminodiacetic acid)

CAS Number5994-61-6
Molecular FormulaC5H10NO7P
Molecular Weight227.109
InChI KeyAZIHIQIVLANVKD-UHFFFAOYSA-N
LogP-4.6
Synonyms
  • Phosphonomethyliminodiacetic acid
  • N-(phosphonomethyl)iminodiacetic acid
  • N-(Carboxymethyl)-N-(phosphonomethyl)glycine
  • N-(Carboxymethyl)-N-(phosphonomethyl)-glycine
  • 2,2'-[(phosphonomethyl)imino]diacetic acid
  • n-phosphonomethyliminodiacetic acid
  • Glycine, N-(carboxymethyl)-N-(phosphonomethyl)-
  • CHEBI:63485
  • 2,2'-((Phosphonomethyl)azanediyl)diacetic acid
  • 2-[carboxymethyl(phosphonomethyl)amino]acetic acid

Applications:

HPLC UV Method for Analysis of N-(Phosphonomethyl)iminodiacetic acid (PMIDA) on Newcrom BH Column

December 12, 2025

HPLC Method for PMIDA (Phosphonomethyliminodiacetic acid) on Newcrom BH by SIELC Technologies

High Performance Liquid Chromatography (HPLC) Method for Analysis of PMIDA (Phosphonomethyliminodiacetic acid).

N-(Phosphonomethyl)iminodiacetic acid, also known as PMIDA, is a key intermediate in the making of glyphosate. It has the chemical formula (HO)2P(O)CH2N(CH2CO2H)2. You can find detailed UV spectra of PMIDA and information about its various lambda maxima by visiting the following link.

PMIDA (Phosphonomethyliminodiacetic acid) can be retained and analyzed using the Newcrom BH stationary phase column. The analysis utilizes an isocratic method with a simple mobile phase consisting of water and acetonitrile (MeCN) with a phosphoric acid buffer. Detection is performed using UV.

ColumnNewcrom BH, 4.6 x 100 mm, 5 µm, 100 A, dual ended
Mobile PhaseMeCN/H2O
BufferGradient H3PO4 – 0.5-2.0%, 10 min
Flow Rate1.0 ml/min
DetectionUV, 200 nm
LOD*6 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 CompoundsHerbicide
Analyzing CompoundsPMIDA (Phosphonomethyliminodiacetic acid)

Application Column

Newcrom BH

Column Diameter: 4.6 mm
Column Length: 100 mm
Particle Size: 5 µm
Pore Size: 100 A
Column options: dual ended

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Application Analytes:
PMIDA (Phosphonomethyliminodiacetic 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 UV Method for Simultaneous Analysis of Glyphosate and N-(Phosphonomethyl)iminodiacetic acid (PMIDA) on Newcrom BH  Column

December 11, 2025

HPLC Method for PMIDA (Phosphonomethyliminodiacetic acid), Glyphosate on Newcrom BH by SIELC Technologies

High Performance Liquid Chromatography (HPLC) Method for Analysis of PMIDA (Phosphonomethyliminodiacetic acid), Glyphosate.

Glyphosate is a broad-spectrum herbicide. It works through inhibiting the plant enzyme 5-enolpyruvylshikimate-3-phosphate synthase. The enzyme is essential for producing amino acids within the plant.  Glyphosate is used across agriculture and forestry, as well as rare aquatic environments.  It’s chemical formula is C3H8NO5P. You can find detailed UV spectra of Glyphosate and information about its various lambda maxima by visiting the following link.

N-(Phosphonomethyl)iminodiacetic acid, also known as PMIDA, is a key intermediate in the making of glyphosate. It has the chemical formula (HO)2P(O)CH2N(CH2CO2H)2. You can find detailed UV spectra of PMIDA and information about its various lambda maxima by visiting the following link.

PMIDA (Phosphonomethyliminodiacetic acid), Glyphosate can be retained and analyzed using the Newcrom BH stationary phase column. The analysis utilizes an isocratic method with a simple mobile phase consisting of water and acetonitrile (MeCN) with a phosphoric acid buffer. Detection is performed using UV.

ColumnNewcrom BH, 4.6 x 50 mm, 5 µm, 100 A, dual ended
Mobile PhaseMeCN/H2O
BufferGradient H3PO4 – 0.1-1%, 10 min
Flow Rate1.0 ml/min
DetectionUV, 200 nm
LOD*4 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 CompoundsHerbidices
Analyzing CompoundsPMIDA (Phosphonomethyliminodiacetic acid), Glyphosate

Application Column

Newcrom BH

Column Diameter: 4.6 mm
Column Length: 50 mm
Particle Size: 5 µm
Pore Size: 100 A
Column options: dual ended

Add to cart
Application Analytes:
Glyphosate
PMIDA (Phosphonomethyliminodiacetic 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.

UV-Vis Spectrum of N-(Phosphonomethyl)iminodiacetic acid (PMIDA)

December 11, 2025
Access the UV-Vis Spectrum SIELC Library
UV-Vis Spectrum of PMIDA (Phosphonomethyliminodiacetic acid).

If you are looking for optimized HPLC method to analyze PMIDA (Phosphonomethyliminodiacetic acid) check our HPLC Applications library

For optimal results in HPLC analysis, it is recommended to measure absorbance at a wavelength that matches the absorption maximum of the compound(s) being analyzed. The UV spectrum shown can assist in selecting an appropriate wavelength for your analysis. Please note that certain mobile phases and buffers may block wavelengths below 230 nm, rendering absorbance measurement at these wavelengths ineffective. If detection below 230 nm is required, it is recommended to use acetonitrile and water as low UV-transparent mobile phases, with phosphoric acid and its salts, sulfuric acid, and TFA as buffers.
For some compounds, the UV-Vis Spectrum is affected by the pH of the mobile phase. The spectra presented here are measured with an acidic mobile phase that has a pH of 3 or lower.

 

Application Analytes:
PMIDA (Phosphonomethyliminodiacetic 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 Glyphosate Reaction Intermediates and Impurities

March 3, 2010


Glyphosate and intermediates/impurities of production are separated on an Obelisc N HILIC/ion-exchange column by a combination of HILIC and ion-exchange mechanism. Method can be used in analysis of glyphosate, iminodiacetic acid, (N-phosphonomethyl)-imminodiacetic acid, diethanolamine and related impurities in reaction mixtures, waste and ground waters. Detection techniques are LC/MS, ELSD, CAD and UV.

Condition

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

Description

Class of Compounds
Herbicide, Hydrophilic, Ionizable
Analyzing Compounds Glyphosate, IDA, PMIDA, DEA

 

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:
DEA (Diethanolamine)
Glyphosate
IDA (Iminodiacetic acid)
PMIDA (Phosphonomethyliminodiacetic 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 Separation of Glyphosate Production Intermediates

January 13, 2010


Glyphosate is a broad spectrum herbicide used to kill weeds. It is the most used herbicide. Glyphosate is an aminophosphonic analogue of the natural amino acid glycine. Glyphosate and its intermediates are very polar ionic compounds derived from glycine. Neither of intermediates can be retained on traditional reversed-phase columns. Two methods for glyphosate intermediates were developed on Primesep B, Primesep B2 and Primesep 100 columns.

Condition

Column Primesep B, Primesep B2, Primesep 100,  4.6×150 mm, 5 µm, 100A
Mobile Phase MeCN/H2O
Buffer TFA, H2SO4
Flow Rate 1.0 ml/min
Detection ELSD

 

Description

Class of Compounds
 Insecticide, Herbicide, Fungicide,  Hydrophobic, Ionizable
Analyzing Compounds Glyphosate, PMIDAA, IDA

 

Application Column

Primesep 100

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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Primesep B

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.

Select options

Primesep B2

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.

Select options
Application Analytes:
DEA (Diethanolamine)
Diethanolamine
Glyphosate
IDA (Iminodiacetic acid)
Iminodiacetic Acid
PMIDA (Phosphonomethyliminodiacetic acid)
Phosphonomethyliminodiacetic Acid

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.