Sodium Propylparaben
AKA “35285-69-9, Propylparaben sodium, Propyl 4-hydroxybenzoate sodium salt, Sodium propyl 4-hydroxybenzoate, Caswell No. 714A, sodium propyl paraben, Sodium propyl hydroxybenzoate, Propylparaben sodium [USAN], Propyl p-hydroxybenzoate, sodium salt
Preservative
Ingredient Facts
Sodium propylparaben
AKA: 35285-69-9, Propylparaben sodium, Propyl 4-hydroxybenzoate sodium salt, Sodium propyl 4-hydroxybenzoate, Caswell No. 714A, Sodium propyl paraben, Sodium propyl hydroxybenzoate, Propylparaben sodium [USAN], Propyl p-hydroxybenzoate, Sodium salt
Preservative · Preservative · EWG: 4
Synthetic
Preservative
Not Clean
Sodium 4-propoxycarbonylphenoxide
Effective at 0.2%
Formula
C10H11NaO3
Mol. Weight
202.18
CAS #
35285-69-9
Form
Powder
See origin →
Functions
Preservative
Keeps your product from growing bacteria, mold, or yeast. Without these, that jar of cream becomes a petri dish in about a week.
Anti-Inflammatory
Antimicrobial
Fights Acne
Prevents microbial growth
Traditional Use
The sodium salt of propylparaben, a synthetic preservative developed in the early 20th century. Used in cosmetics from mid-20th century onward as a broad-spectrum antimicrobial preservative.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Caution
EWG
4
CIR
Safe as used
Pregnancy
Caution
CIR Safety Findings
medical-approval
all-shades-safe
Phototoxicity Concern
Concentration Guide
5e-06%
0.4%
0%100%
Effective Range
CIR reported use: 0.000005-0.4 | 0.000015-0.28
Regulatory Status
USApermitted
EUpermitted
JAPANpermitted
CANADApermitted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR