murphyAmmonium Acrylates Copolymer
molecular structure · PubChem
AKA: Acrylic Polymer, Film Forming Polymer
Synthetic
Occlusive
Clean
OriginDerived from acrylic acid and its esters combined with ammonia, belonging to the acrylic polymer chemical family. Synthesized through free-radical polymerization of acrylic monomers, then neutralized with ammonia to form the ammonium salt.
2-Methyl-2-propenoic acid, polymer with 2-propenoic acid or one or more of their simple esters, ammonium salts
CAS #
37809-64-6
Form
Liquid
State
Solid
Skin Types
●all-skin-types, gentle
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Antistatic
Binding
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Viscosity Controlling
Reduces Static
Holds Formula Together
Creates Protective Barrier
Controls Viscosity
Reduces Inflammation
Locks In Moisture
Creates protective layer
Reduces flyaways
Holds ingredients together
Controls product thickness
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed4 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
2
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not an Eye Irritant
1 study / 1 not irritating (CIR 283)
Not a Skin Irritant
1 study / 1 not irritating (CIR 283)
Concentration Guide
Leave-on0.3–19.5%
Rinse-off0.0057–0.046%
0%50%100%
CIR reported use · 2018 survey
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR