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Sodium Butylparaben
AKA “36457-20-2, Butylparaben sodium, Butyl 4-hydroxybenzoate sodium salt, Sodium butyl 4-hydroxybenzoate, Butyl p-hydroxybenzoate sodium, Sodium butyl hydroxybenzoate, Butyl-4-hydroxybenzoate sodium salt, EINECS 253-049-7, MAR76J77VS”
Preservative
Ingredient Facts
Sodium butylparaben
AKA: 36457-20-2, Butylparaben sodium, Butyl 4-hydroxybenzoate sodium salt, Sodium butyl 4-hydroxybenzoate, Butyl p-hydroxybenzoate sodium, Sodium butyl hydroxybenzoate, Butyl-4-hydroxybenzoate sodium salt, EINECS 253-049-7, MAR76J77VS
Preservative · Preservative · EWG: 4
Synthetic
Preservative
Not Clean
Sodium butyl 4-hydroxybenzoate
Formula
C11H13NaO3
Mol. Weight
216.21
CAS #
36457-20-2
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
Parabens were first synthesized in 1924 and introduced to cosmetics in the 1950s as preservatives to replace less-stable traditional antimicrobials. Sodium butylparaben is a salt form created to improve water solubility of the paraben 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
14.0%
0%20%
Reg. Limit
EU regulatory limit: 14.0%. - 0,14% (as acid) for the sum of the individual concentrations - 0,8% (as acid) for mixtures of substances mentioned in entry 12 and 12a, here the sum of the individual concentrations of butyl and propylparaben and their salts does not exceed 0,14%. For leave -on products designed for children under three years of age: Do not use on the nappy area Source: EU Cosmetics Regulation (EC) 1223/2009, Annex V (Preservatives), Entry 12 bis. Dermal absorption: 0.1%. Source: CIR Safety Assessment (CIR Seq 746).
Regulatory Status
USA✔ permitted
EU✔ permitted
JAPAN✔ permitted
CANADA✔ permitted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR