Benzophenone-5
molecular structure · PubChem
AKA: Sulibenzone, 2-Hydroxy-4-methoxybenzophenone-5-sulfonic acid sodium salt, Cyasorb UV 284, Uvistat 112, 2-Hydroxy-4-methoxybenzophenone-5-sodium sulfonate, Sulisobenzone sodium, BENZOPHENONE 5, ASL 24ST
Synthetic
Sunscreen Filter
Not Clean
Benzenesulfonic acid, 5-benzoyl-4-hydroxy-2-methoxy-, monosodium salt
Formula
C14H11NaO6S
Mol. Weight
330.29
CAS #
6628-37-1
Form
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 UV absorber developed as part of the benzophenone family in the late 20th century. Created to offer photostability and broad-spectrum UV protection in cosmetic and sun protection formulations.
EWG
4
CIR
Safe as used
Pregnancy
Caution
CIR Safety Findings
Not a Sensitizer
ewg-4
medical-approval
all-shades-safe
Concentration Guide
5.0%
0%7%
Reg. Limit
EU/SCCS limit: 5% in cosmetic products. Opinion: SCCS/1679/25
Regulatory Agencies
Skin Types
●all-skin-types
Best For
Sun Damage
Pregnancy & Breastfeeding Safe
Caution
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR