Disodium Etidronate

AKA: Etidronate disodium, 7414-83-7, Disodium ethydronate, Sodium ethidronate, Sodium ethydronate, Etidronic Acid Disodium Salt, Turpinal 2NZ, Disodium ethanol-1, 1-diphosphonate
Synthetic
Chelating Agent
Not Clean
Disodium dihydrogen (1-hydroxyethylidene)bisphosphonate
Formula
C2H6Na2O7P2
Mol. Weight
249.99
CAS #
7414-83-7
Form
Powder
Functions
Chelating
Grabs onto metal ions in water that would destabilize the formula. Keeps your product from going bad or changing color.
Removes Metal Ions
Antioxidant Protection
Binds metal ions
Traditional Use
Synthetic bisphosphonate compound developed in the mid-20th century for industrial water treatment before adoption in cosmetics as a chelating and stabilizing agent.
EWG
4
CIR
Safe as used
Pregnancy
Caution
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUpermitted
JAPANpermitted
CANADApermitted
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Caution
The paper trail
🔬Peer-reviewed1 paper
⚖️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