Rheology Modifier

2-Acrylamido-2-Methylpropane Sulfonic Acid

INCI: 2-ACRYLAMIDO-2-METHYLPROPANE SULFONIC ACID
CAS 15214-89-8 EC 239-268-0
AMPS,tert-Butylacrylamidosulfonic acid,1-Propanesulfonic acid, 2-Methyl-2-[(1-oxo-2-propen-1-yl)amino]-
Limited Data
Insufficient safety data available. Consider enriching this ingredient.
Details

Description

AMPS,tert-Butylacrylamidosulfonic acid,1-Propanesulfonic acid, 2-Methyl-2-[(1-oxo-2-propen-1-yl)amino]-

Purpose

Function

Viscosity controlling; used as monomer for polymer synthesis (e.g., acryloyldimethyltaurate copolymers)
Profile

Properties

Silicone
Silicone free
Compliance

Regulatory Status

EU
Permitted
Safety
GOOD
US
Permitted
EU Max ConcentrationIII/33
Absorptionlow
Sensitizationlow
MoSadequate
NOAEL1000 mg/kg
ConcernLow
Verdict

Residual monomer contamination is the critical concern; acrylamide impurity must be minimized and must not be used as free monomer in finished products; cGMP required to limit impurities.

US Note

CIR concluded acryloyldimethyltaurate polymers are safe in present practices of use

Assessment

Ratings

Comedogenic0/5
LowHigh
Irritancy0/5
LowHigh
Reference

Identifiers

CAS Number
15214-89-8
EC Number
239-268-0
INCI
2-ACRYLAMIDO-2-METHYLPROPANE SULFONIC ACID
Category
Rheology Modifier
Updated
Apr 23, 2026