Sodium Erythorbate

AKA: 6381-77-7, Sodium isoascorbate, Isona, Neo-cebitate, Isoascorbic acid sodium salt, Mercate 20, Sodium D-isoascorbate, Araboascorbic acid, Monosodium salt, Eribate N
Synthetic
Antioxidant
Clean
OriginSodium erythorbate is synthesized from ascorbic acid (vitamin C), a compound derived from glucose fermentation. It is produced through sodium salt formation via neutralization of erythorbic acid with sodium hydroxide.
D-Erythro-hex-2-enonic acid, gamma-lactone, sodium salt (1:1)
Solubility greater than or equal to 100 mg/mL at 64 °F (NTP, 1992)
Formula
C6H7NaO6
Mol. Weight
198.11
CAS #
6381-77-7
Form
Powder
State
Almost odorless fluffy, white to off-white crystalline powder. Used as an antioxidant and preservative.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Antioxidant
Fights free radicals — the unstable molecules from UV, pollution, and stress that break down collagen and cause premature aging.
Neutralizes Free Radicals
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.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Mixed Skin Irritation Results
1 study / 1 mixed / reactions slight (CIR 25)
Eye Irritant in Testing
1 study / 1 irritating / reactions slight (CIR 25)
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR