Sodium Ascorbate
AKA: 134-03-2, L-Ascorbic acid sodium salt, Sodium L-ascorbate, Vitamin C sodium, Ascorbic acid sodium salt, Monosodium L-ascorbate, Ascorbicin, Sodascorbate, Ascorbate de sodium
Synthetic
Antioxidant
Vitamin C
Clean
Sodium ascorbate is an organic sodium salt resulting from the replacement of the proton from the 3-hydroxy group of ascorbic acid by a sodium ion. It has a role as a coenzyme, a reducing agent, a flour treatment agent, a plant metabolite, a human metabolite, a food antioxidant and a Daphnia magna metabolite. It is a vitamin C and an organic sodium salt. It contains a L-ascorbate.
Solubility greater than or equal to 100 mg/mL at 63 °F (NTP, 1992)
Formula
C6H7NaO6
Mol. Weight
198.11
CAS #
134-03-2
Form
Powder
State
Minute crystals or white powder. pH of aqueous solutions 5.6 to 7.0 or even higher (a 10% solution, made from a commercial grade, may have a pH of 7.4 to 7.7). (NTP, 1992)
Functions
Antioxidant
Fights free radicals — the unstable molecules from UV, pollution, and stress that break down collagen and cause premature aging.
Neutralizes Free Radicals
Traditional Use
Vitamin C was identified in the 1930s; sodium ascorbate is a stable, water-soluble form developed in the mid-20th century as an antioxidant ingredient in skincare. Used to provide vitamin C's brightening and anti-aging benefits in cosmetic formulations.
Skin Types
●all-skin-types
Best For
Dullness
Pregnancy & Breastfeeding Safe
Yes
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.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR