murphyCalcium Paraben
AKA: Calcium bis(4-hydroxybenzoate), 69959-44-0, Calcium;4-carboxyphenolate, MSK2535Ca
Synthetic
Preservative
Not Clean
OriginCalcium paraben is synthesized from para-hydroxybenzoic acid (PHBA), a compound derived from petroleum or synthesized via benzoic acid. It is produced through esterification of PHBA with methanol, followed by calcium salt formation.
Calcium bis(4-hydroxybenzoate)
Formula
C14H10CaO6
Mol. Weight
314.30
CAS #
69959-44-0
Form
Powder
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
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
Boosts Collagen
Antimicrobial
Prevents microbial growth
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed0 reviews
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Restricted By
Concentration Guide
0%50%100%
Reg. limit 0.4%
CIR lists it as not reported to be in use.
CIR · report published 2020
EU regulatory limit: 0.4% (as acid) for a single ester, 0.8% (as acid) for mixtures of esters. Source: EU Cosmetics Regulation (EC) 1223/2009, Annex V (Preservatives), Entry 12.
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR