Benzophenone-9

AKA: 76656-36-5, Benzophenone 9, Uvinuc ds 49, Uvinul 3048, Disodium 2, 2'-dihydroxy-4, 4'-dimethoxy-5, 5'-disulfobenzophenone, 2'-Dihydroxy-4, Disodium salt
Synthetic
Sunscreen Filter
Clean
Disodium 3,3'-carbonylbis[4-hydroxy-6-methoxybenzenesulphonate]
Formula
C15H12Na2O11S2
Mol. Weight
478.40
CAS #
76656-36-5
Form
Powder
Functions
Uv Absorber
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 absorber developed in the late 20th century for use in aqueous sunscreen and cosmetic formulations. Created to provide UV protection in hydrophilic products where lipophilic UV filters were impractical.
EWG
2
CIR
Safe as used
Pregnancy
Caution
CIR Safety Findings
Not a Sensitizer
ewg-2
medical-approval
pregnancy-nursing-safe
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Skin Types
all-skin-types, gentle
Best For
Sun Damage
Pregnancy & Breastfeeding Safe
Caution
The paper trail
🔬Peer-reviewednone on file
⚖️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