Benzophenone-5

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
OriginSynthesized from benzophenone, a polycyclic aromatic ketone compound derived from petroleum-based chemical feedstocks. Produced through sulfonation and subsequent chemical modification to introduce sulfonic acid groups for enhanced water solubility.
Benzenesulfonic acid, 5-benzoyl-4-hydroxy-2-methoxy-, monosodium salt
Formula
C14H11NaO6S
Mol. Weight
330.29
CAS #
6628-37-1
Form
Powder
Skin Types
●all-skin-types
Best For
Sun Damage
Pregnancy & Breastfeeding Safe
Caution
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
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.
EWG
4
CIR
Safe as used
Pregnancy
Caution
Concentration Guide
Leave-onNot reported
Rinse-off0.06%
0%50%100%
Reg. limit 5%
CIR reported use · 2020 survey
EU/SCCS limit: 5% in cosmetic products. Opinion: SCCS/1679/25
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR
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