AKA: 18996-35-5, Sodium dihydrogen citrate, Sodium citrate monobasic, 1, 2, 3-Propanetricarboxylic acid, Monosodium salt, Sodium salt (1:1), E 331I
Synthetic
Chemical Exfoliant
Not Clean
2-Hydroxy-1,2,3-Propanetricarboxylic Acid, Monodium Salt
Effective at 2.5%
Formula
C6H7NaO7
Mol. Weight
214.10
CAS #
18996-35-5
Form
Liquid
State
Dry Powder; Liquid; Other Solid
Functions
Buffering
Antioxidant
Anti-Inflammatory
Boosts Collagen
Maintains optimal pH
Traditional Use
Citric acid salts have been used since antiquity—citrus fruits were valued in traditional medicine and skincare for their astringent and brightening properties. The monosodium form was developed in the 20th century as a pH buffer and chelating agent.