Sodium Isobutylparaben
AKA “Sodium isobutyl 4-oxidobenzoate, UNII-9687QN0ZSY, EINECS 284-595-4, RefChem:183949, DTXCID50156465, SODIUM ISOBUTYLPARABEN [INCI]”
Synthetic
Ingredient Facts
Sodium isobutylparaben
AKA: Sodium isobutyl 4-oxidobenzoate, UNII-9687QN0ZSY, EINECS 284-595-4, RefChem:183949, DTXCID50156465, SODIUM ISOBUTYLPARABEN [INCI]
Synthetic · Antimicrobial · EWG: 4
Synthetic
Preservative
Synthetic
Not Clean
A preservative that keeps the formula fresh and effective by preventing bacterial growth, helping extend shelf life.
Effective at 0.03%
Formula
C11H13NaO3
Mol. Weight
216.21
CAS #
84930-15-4
Form
Powder
See origin →
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.
Skin Types
●all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Caution
EWG
4
CIR
Safe w/Qualifications
Pregnancy
Caution
Restricted By
CIR Safety Findings
medical-approval
all-shades-safe
Phototoxicity Concern
Concentration Guide
1.2e-05%
0.062%
0%2%
Effective Range
CIR reported use: 0.000012-0.062
Regulatory Agencies
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR