Pentaerythrityl Tetrabenzoate

AKA: Pentaerythritol tetrabenzoate, Uniplex 552, CCRIS 5971, 2, 2-Bis((benzoyloxy)methyl)-1, 3-propanediol dibenzoate, Pentaerythritol

Synthetic

Emollient

Skin Conditioner

Not Clean

Benzoic acid, tetraester with 2,2-bis(hydroxymethyl)-1,3-propanediol

Solubility less than 1 mg/mL at 66 °F (NTP, 1992)

Formula

C33H28O8

Mol. Weight

552.60

CAS #

4362-18-1

Form

Powder

State

2,2-bis((benzoyloxy)methyl)dibenzoate-1,3-propanediol is a cream-colored solid. (NTP, 1992)

Functions

Emollient

Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.

Locks In Moisture

Traditional Use

A synthetic ester created by combining pentaerythritol with benzoic acid, developed in the 20th century as a cosmetic film-former and binder.

EWG

CIR

Safe as used

Pregnancy

Yes

CIR Safety Findings

Not a Sensitizer

medical-approval

all-shades-safe

Regulatory Status

USA✔ permitted

EU⚠ restricted

JAPAN⚠ restricted

CANADA⚠ restricted

Regulatory Agencies

Skin Types

●all-skin-types

Best For

General

Pregnancy & Breastfeeding Safe

Yes

The paper trail

🔬Peer-reviewednone on file

⚖️Regulatory1 listing →

🛡️Safety-assessed1 review →

Counts, not a verdict. A listing isn't a study. The trail, you decide.

Verified Jun 2026

Data: PubChem · CosIng · EWG · CIR