Sodium Isobutylparaben
molecular structure · PubChem
AKA: Sodium isobutyl 4-oxidobenzoate, 84930-15-4, SODIUM ISOBUTYLPARABEN [INCI]
Synthetic
Preservative
Not Clean
Sodium isobutyl 4-oxidobenzoate
Effective at 0.03%
Formula
C11H13NaO3
Mol. Weight
216.21
CAS #
84930-15-4
Form
Powder
Functions
Antimicrobial
Keeps your product from growing bacteria, mold, or yeast. Without these, that jar of cream becomes a petri dish in about a week.
Fights Bacteria
Traditional Use
A synthetic preservative developed in the early-to-mid 20th century as part of the paraben family. Created to prevent microbial growth in cosmetics as a modern alternative to traditional preservatives like salt and alcohol.
EWG
4
CIR
Safe as used
Pregnancy
Caution
Restricted By
CIR Safety Findings
medical-approval
all-shades-safe
Phototoxicity Concern
Concentration Guide
1.2e-05%
0.062%
0%2%
Reported use
CIR reported use: 0.000012-0.062
Regulatory Agencies
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Caution
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed0 reviews
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR