Benzophenone-4

Benzophenone-4 molecular structure
molecular structure · PubChem
AKA: Sulisobenzone, 4065-45-6, 5-Benzoyl-4-hydroxy-2-methoxybenzenesulfonic acid, 2-Hydroxy-4-methoxybenzophenone-5-sulfonic acid, Sungard, Uval, Benzophenone 4, Seesorb 101S, Syntase 230
Synthetic
Sunscreen Filter
Not Clean
5-Benzoyl-4-hydroxy-2-methoxybenzenesulfonic acid
Solubility 10
Formula
C14H12O6S
Mol. Weight
308.31
CAS #
4065-45-6
Form
Powder
State
Dry Powder
Functions
Light Stabilizer
Uv Absorber
Blocks or absorbs UV rays to protect your skin from sun damage, dark spots, and premature aging.
Uv Filter
Blocks or absorbs UV rays to protect your skin from sun damage, dark spots, and premature aging.
Shields from UV damage
Traditional Use
A synthetic water-soluble UV filter developed in the 20th century for use in aqueous cosmetic formulations and sunscreens. Engineered to provide UV protection in products where oil-soluble UV absorbers were not suitable.
EWG
1
CIR
Safe as used
Pregnancy
Caution
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
10.0%
0%14%
Reg. Limit
FDA OTC limit (Sunscreen): 10%. 21 CFR 352.10 | EU/SCCS limit: 5% in rinse-off. Opinion: SCCS/1660/23
Regulatory Status
USA✔ permitted
EU✔ permitted
JAPAN✔ permitted
CANADA✔ permitted
Skin Types
●all-skin-types
Best For
Sun Damage
Pregnancy & Breastfeeding Safe
Caution
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR