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2-Acrylamido-2-methyl-1-propanesulfonic acid sodium salt solution

50 wt. % in H2O

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2-Methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid sodium, Sodium 2-acrylamido-2-methyl-1-propanesulfonate, Sodium acryloyldimethyltaurate
Linear Formula:
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:

Quality Level


50 wt. % in H2O

refractive index

n20/D 1.4220 (lit.)


1.2055 g/mL at 25 °C (lit.)

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refractive index

n20/D 1.4220 (lit.)

refractive index

n20/D 1.394

refractive index


refractive index



1.2055 g/mL at 25 °C (lit.)


1.17 g/mL at 25 °C





General description

2-Acrylamido-2-methyl-1-propanesulfonic acid sodium salt (AMPS Na) is a monomer that belongs to the class of sulfonic acid monomers. It is commonly used in the production of various polymers, such as polyacrylamide co-polymers, poly(AMPS), AMPS-functionalized polymers, and hydrogels . These polymers are used in paints, adhesives, textiles, paper manufacturing, personal care products, coating, and adhesive applications. Additionally, AMPSNa also serves as a comonomer in combination with other acrylic monomers to enhance the scrub resistance and dispersant performance of paper coatings and paint emulsions. It can be used as a dopant and a protonating agent for conducting polymers. It is used in a variety of electronic applications.


2-Acrylamido-2-methyl-1-propanesulfonic acid sodium salt (AMPS Na) can be used:
  • As a monomer in the formation of polyelectrolyte copolymer gels for potential application in bioengineering, biomedicine, and water purification .
  • In the fabrication of Schottky diodes, humidity sensors, and lithium-ion batteries.
  • As a monomer in the synthesis of a hydrogel nanocomposite applicable as a potential adsorbent for dyes .

Storage Class Code

10 - Combustible liquids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Aurora Mejia et al.
ACS omega, 4(6), 11119-11125 (2019-08-29)
High molar masses homopolymers of both acrylamide (AM) and 2-acrylamido-2-methylpropanesulfonate (AMPS) as well as poly(AM-stat-AMPS) exhibiting a large range copolymer composition has been obtained via the optimization of a purely adiabatic gel process. Monomer concentrations ranging from 2.0 to 3.47
Polymeric absorbent for water sorption based on chemically crosslinked poly (acrylamide/2-acrylamido-2-methyl-1-propanesulfonic acid sodium salt) hydrogels
Uzum OB, et al.
Polymer Bull., 57(5), 703-712 (2006)
K Chandrasekar et al.
Biomacromolecules, 8(5), 1665-1675 (2007-04-12)
Cholesterol mesogen containing monomer, cholesteryl acrylamido butyrate (CAB) with the novel spacer group drawn from 4-amino butyric acid has been demonstrated to exhibit good reactivity with 2-acrylamido-2-methyl-1-propane sulfonic acid (AMPS) to yield copolymers with CAB content as high as 15
K Chandrasekar et al.
Biomacromolecules, 9(4), 1264-1272 (2008-03-01)
Ionic polymeric amphiphiles consisting of cholesterol mesogen were investigated for the interfacial adsorption characteristics at the air/water interface using a Langmuir film balance with an aim to understand the influence of ionic segment from 2-acrylamido-2-methyl-1-propane sulfonic acid (AMPS) on the
Ranjith Krishna Pai et al.
Journal of the American Chemical Society, 130(39), 13074-13078 (2008-09-05)
In the biomineralization process, the changes in conformation of organic matrix may be a widespread phenomenon. Investigation of the structural relationship between organic and inorganic materials is the main subject. The approach taken was to extract quantitative information of the

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