Salts & Minerals
REACH
Sodium tartrate
CAS Number
868-18-8
EC Number
212-773-3
E Number
E335
What is Sodium tartrate?
Sodium tartrate (CAS 868-18-8), the disodium salt of tartaric acid, is a mild alkaline salt used in food and pharmaceutical manufacturing as a buffering agent, chelating agent, and acidulant.
Where is Sodium tartrate used?
- Pharmaceuticals: buffering component in oral solutions and effervescent tablets
- Laxatives: pH control for active ingredient stability
- Food and beverages: acidity regulator and texture improver in processed foods, confectionery and beverages
- Food processing: chelating agent that sequesters calcium and magnesium ions
- Analytical and laboratory reagents
- In Fehling's solution it is a key component.
Good to know: Consistent purity is a procurement requirement for Fehling's solution. Food-grade and pharmaceutical-grade (USP/BP) specifications are available.
Commercial specifications
- Anhydrous and dihydrate forms
- Packaging from kilogram-scale bags to bulk quantities
Other Names (Synonyms)
Tartaric acid, disodium salt|Sodium L-(+)-tartrate|Disodium salt of L-(+)-tartaric acid|disodium (R-(R*,R*))-2,3-dihydroxybutanedioate|Bisodium tartrate|(R-(R*,R*))-2,3-dihydroxybutanedioic acid, disodium salt|Disodium L-(+)-tartrate|disodium tartrate
What are the physical properties of Sodium tartrate?
Density 1.82 g/cm³
Appearance White crystals or granules. Soluble in water; insoluble in alcohol.
Color White to off-white
Odor Odorless
Form Solid
Water Solubility soluble in ~9 parts H2O, 2 parts boiling H2O; insoluble alcohol [MER06]
Vapor Pressure 0Pa at 20℃
pH 7.0-8.0 (25℃, 1.5M in H2O)
Log P -4.5 at 20℃
How is Sodium tartrate classified and handled safely? Learn More
Warning
GHS07· Irritant
Hazard Statements
H302 Harmful if swallowed
Precautionary Statements
P264 Wash … thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P330 Rinse mouth.
P501 Dispose of contents/container in accordance with local regulations.
P301+P317 Get emergency medical help.