Quick Search
E337 Sodium Potassium Tartrate is a double salt of tartaric acid containing both sodium and potassium, and E337 Sodium Potassium Tartrate is used in food and beverage applications as an acidity regulator, buffering agent, and sequestrant to support stable pH and consistent processing.
E337 Sodium Potassium Tartrate helps control acidity by forming tartrate buffer systems with tartaric acid, and E337 Sodium Potassium Tartrate is valued for balancing ionic contributions while maintaining flavor and stability in acidic formulations.
E337 Sodium Potassium Tartrate is typically supplied as a white crystalline powder, commonly as a hydrate form, and E337 Sodium Potassium Tartrate performance depends on hydration state, dosage, and overall acid-salt balance in the formulation.
CAS Number: 6381-59-5 (commonly associated; hydrate forms common)
EC Number: 211-350-1 (commonly associated)
Molecular Formula: C4H4KNaO6·4H2O (common representation for tetrahydrate)
Molecular Weight: 282.22 g/mol (tetrahydrate; typical representation)
Synonyms: E337 Sodium Potassium Tartrate, Sodium Potassium Tartrate, Potassium Sodium Tartrate, Rochelle Salt (common name), Seignette’s Salt (historical), Sodium Potassium Tartrate Tetrahydrate, Double Salt of Tartaric Acid, Sodium Potassium Tartrate Buffer, E337, Sodium Potassium Tartrate Acidity Regulator, Sodium Potassium Tartrate Sequestrant, Sodium Potassium Tartrate Food Grade, E337 Sodium Potassium Tartrate, Sodium Potassium Tartrate, Potassium Sodium Tartrate, Rochelle Salt, Seignette Salt, Potassium Sodium Tartrate Tetrahydrate, Sodium Potassium Tartrate Tetrahydrate, Tetrasodium Potassium Tartrate, Sodium Potassium Tartrate Crystal, Sodium Potassium Tartrate Crystals, Tartrate of Soda and Potash, Double Tartrate of Soda and Potash, Potassium Sodium Tartrate Tetrahydrate Rochelle Salt, Sodium Potassium Tartrate Rochelle Salt, Sodium Potassium L-Tartrate, Potassium Sodium L-Tartrate, Sodium Potassium (+)-Tartrate, Potassium Sodium (+)-Tartrate, Sodium Potassium 2,3-Dihydroxybutanedioate, Potassium Sodium 2,3-Dihydroxybutanedioate, Sodium Potassium Dihydroxysuccinate, Potassium Sodium Dihydroxysuccinate, Tartaric Acid Sodium Potassium Salt, Tartaric Acid Potassium Sodium Salt, Sodium Potassium Salt of Tartaric Acid, Potassium Sodium Salt of Tartaric Acid, Monosodium Monopotassium Tartrate, Monopotassium Monosodium Tartrate, Sodium Potassium Tartrate FCC
APPLICATIONS
E337 Sodium Potassium Tartrate is used in beverages to control pH and improve flavor balance in acidic drink systems.
E337 Sodium Potassium Tartrate is incorporated into beverage concentrates and syrups to maintain consistent acidity after dilution.
E337 Sodium Potassium Tartrate is used in beverage formulations to buffer tartaric acid and reduce harsh sourness.
E337 Sodium Potassium Tartrate is used in confectionery to buffer acid systems and improve taste balance in sour candies.
E337 Sodium Potassium Tartrate is incorporated into gummy and chewy candy formulations to stabilize acidity and improve shelf life flavor consistency.
E337 Sodium Potassium Tartrate is used in powdered drink mixes to help control acidity and improve reconstitution taste.
E337 Sodium Potassium Tartrate is used in bakery products to control acidity and influence leavening performance in compatible formulations.
E337 Sodium Potassium Tartrate is incorporated into baking powders and baking mixes to fine-tune acid-base reaction behavior.
E337 Sodium Potassium Tartrate is used in bakery fillings to stabilize pH and flavor during storage.
E337 Sodium Potassium Tartrate is used in effervescent tablets and powders to support controlled acid-base reaction and consistent fizz in compatible systems.
E337 Sodium Potassium Tartrate is incorporated into functional drink tablets to stabilize acidity and improve taste.
E337 Sodium Potassium Tartrate is used in effervescent confectionery to support predictable reaction and flavor release.
E337 Sodium Potassium Tartrate is used as a sequestrant to bind metal ions, improving color and flavor stability in sensitive products.
E337 Sodium Potassium Tartrate is incorporated into beverage systems to reduce metal-catalyzed oxidation and off-flavor development.
E337 Sodium Potassium Tartrate is used in processed foods to improve stability by controlling ionic interactions.
E337 Sodium Potassium Tartrate is used in formulations where a balanced sodium and potassium salt system is desired for functional and sensory reasons.
E337 Sodium Potassium Tartrate is incorporated into specialty foods where buffering and mineral salt balance are both important.
E337 Sodium Potassium Tartrate is valued because E337 Sodium Potassium Tartrate provides reliable buffering and sequestration with balanced sodium and potassium contribution, supporting stable flavor and consistent product quality.
E337 Sodium potassium tartrate is used as an acidity regulator in foods to control pH and flavor.
E337 Sodium potassium tartrate supports buffering with tartaric acid to stabilize acidity.
E337 Sodium potassium tartrate helps reduce pH drift during processing and storage.
E337 Sodium potassium tartrate is used in beverages as a buffer salt to smooth tartness.
E337 Sodium potassium tartrate supports stable acidity in fruit-flavored drinks and concentrates.
E337 Sodium potassium tartrate helps reduce sharp acid peaks by moderating sourness perception.
E337 Sodium potassium tartrate is used in grape- and berry-flavored beverages to support characteristic tartness.
E337 Sodium potassium tartrate supports wine-like acidity profiles in flavor systems.
E337 Sodium potassium tartrate helps improve flavor authenticity in grape formulations.
E337 Sodium potassium tartrate is used in confectionery to control acidity and balance flavor in some candies.
E337 Sodium potassium tartrate supports controlled tartness when used with tartaric acid.
E337 Sodium potassium tartrate helps reduce harsh sourness while keeping bright flavor impact.
E337 Sodium potassium tartrate is used in sour candy systems to modulate acid intensity and improve taste balance.
E337 Sodium potassium tartrate supports smoother sour perception by buffering strong acids.
E337 Sodium potassium tartrate helps improve consumer acceptance of high-acid candies.
E337 Sodium potassium tartrate is used in hard candies to stabilize acidity in some formulations.
E337 Sodium potassium tartrate supports consistent tartness in boiled sweets.
E337 Sodium potassium tartrate helps reduce flavor variability due to acid migration in some candy systems.
E337 Sodium potassium tartrate is used in chewing gum to provide controlled tartness and flavor enhancement.
E337 Sodium potassium tartrate supports fruit flavor profiles by stabilizing acidity.
E337 Sodium potassium tartrate helps maintain consistent sour taste over chewing time.
E337 Sodium potassium tartrate is used in jellies and jams to buffer acidity and support gelation in some systems.
E337 Sodium potassium tartrate supports pH targets that improve pectin performance.
E337 Sodium potassium tartrate helps improve set consistency and reduce batch variability.
E337 Sodium potassium tartrate is used in bakery fillings and icings to provide balanced tang in some products.
E337 Sodium potassium tartrate supports fruit-forward taste in pastry fillings.
E337 Sodium potassium tartrate helps balance sweetness in frostings and glazes.
E337 Sodium potassium tartrate is used in bakery leavening systems to control acid–base reaction in some formulations.
E337 Sodium potassium tartrate supports predictable reaction rates with bicarbonates in selected recipes.
E337 Sodium potassium tartrate helps improve consistency of rise and crumb texture in some baked goods.
E337 Sodium potassium tartrate is used in baking powders and baking mixes as a buffer salt in some formulations.
E337 Sodium potassium tartrate supports stable pH during mixing and baking.
E337 Sodium potassium tartrate helps reduce variability in leavening performance under different conditions.
E337 Sodium potassium tartrate is used in reduced-sodium foods as part of sodium reduction strategies in some formulations.
E337 Sodium potassium tartrate supports ionic strength and functional properties while balancing sodium and potassium ions.
E337 Sodium potassium tartrate helps maintain acceptable taste in lower-sodium recipes.
E337 Sodium potassium tartrate is used in salt replacement seasoning blends to provide tangy-salty notes.
E337 Sodium potassium tartrate supports savory flavor balance while reducing sodium chloride usage in some systems.
E337 Sodium potassium tartrate helps improve mouthfeel in reduced-sodium seasoning systems.
E337 Sodium potassium tartrate is used in dairy desserts to provide mild tartness and pH adjustment in some formulations.
E337 Sodium potassium tartrate supports flavor balance in fruit yogurts and dairy gels.
E337 Sodium potassium tartrate helps stabilize pH for texture and shelf life in some dairy products.
E337 Sodium potassium tartrate is used in sauces and dressings to adjust pH and provide bright acidity.
E337 Sodium potassium tartrate supports flavor brightness in vinaigrettes and marinades.
E337 Sodium potassium tartrate helps improve microbiological stability in acidified sauces.
E337 Sodium potassium tartrate is used in pickling and brining to stabilize acidity in some recipes.
E337 Sodium potassium tartrate supports pH buffering to reduce drift during storage.
E337 Sodium potassium tartrate helps maintain consistent tang in pickled products.
E337 Sodium potassium tartrate is used in canned and jarred foods to buffer acidity in some formulations.
E337 Sodium potassium tartrate supports consistent pH targets for shelf-stable products.
E337 Sodium potassium tartrate helps reduce corrosion risk in cans by moderating acidity in some systems.
E337 Sodium potassium tartrate is used as a sequestrant to bind certain metal ions in foods in some applications.
E337 Sodium potassium tartrate supports reduction of metal-catalyzed oxidation in selected systems.
E337 Sodium potassium tartrate helps improve stability of flavors and colors in some formulations.
E337 Sodium potassium tartrate is used in fruit and vegetable processing to help reduce discoloration in some applications.
E337 Sodium potassium tartrate supports complexation of catalytic metal ions in some systems.
E337 Sodium potassium tartrate helps maintain color and quality in processed produce.
E337 Sodium potassium tartrate is used in pharmaceuticals as a buffer salt in some oral formulations.
E337 Sodium potassium tartrate supports stable pH control in solutions and syrups.
E337 Sodium potassium tartrate helps improve stability of pH-sensitive active ingredients in some formulations.
E337 Sodium potassium tartrate is used in effervescent systems to control pH and taste in some designs.
E337 Sodium potassium tartrate supports smoother acidity after effervescence.
E337 Sodium potassium tartrate helps reduce sharp sourness perception in dissolved products.
E337 Sodium potassium tartrate is used in oral rehydration and electrolyte products to provide mixed sodium and potassium ions in some formulations.
E337 Sodium potassium tartrate supports balanced electrolyte profiles in hydration solutions.
E337 Sodium potassium tartrate helps improve taste and reduce irritation perception in some products.
E337 Sodium potassium tartrate is used in personal care as a pH adjuster in some cosmetic formulations.
E337 Sodium potassium tartrate supports pH balancing in creams, lotions, and cleansers.
E337 Sodium potassium tartrate helps reduce instability caused by hard water ions in some formulations.
E337 Sodium potassium tartrate is used in household cleaning products as a chelating and buffering agent in some formulations.
E337 Sodium potassium tartrate supports improved detergent performance in hard water.
E337 Sodium potassium tartrate helps reduce soap scum formation and improve rinse clarity.
E337 Sodium potassium tartrate is used in detergents to improve builder performance by complexing calcium and magnesium in some systems.
E337 Sodium potassium tartrate supports improved cleaning in hard water.
E337 Sodium potassium tartrate helps reduce limescale interactions that reduce cleaning efficiency.
E337 Sodium potassium tartrate is used in electroplating baths as a complexing agent in some formulations.
E337 Sodium potassium tartrate supports stabilization of metal ions for controlled deposition.
E337 Sodium potassium tartrate helps improve bath stability in selected metal finishing processes.
E337 Sodium potassium tartrate is used in metal cleaning and finishing as a complexing agent in some systems.
E337 Sodium potassium tartrate supports removal of light metal residues under controlled conditions.
E337 Sodium potassium tartrate helps improve surface preparation before coating in some processes.
E337 Sodium potassium tartrate is used in laboratory chemistry as a reagent and buffer component.
E337 Sodium potassium tartrate supports preparation of tartrate buffer systems in some analytical procedures.
E337 Sodium potassium tartrate helps maintain reproducible results in pH-sensitive analyses.
E337 Sodium potassium tartrate is used in analytical chemistry as a complexing agent in some titration systems.
E337 Sodium potassium tartrate supports stabilization of certain metal ions in solution.
E337 Sodium potassium tartrate helps improve endpoint clarity in selected analytical methods.
E337 Sodium potassium tartrate is used in education and laboratory demonstrations as Rochelle salt in classic experiments.
E337 Sodium potassium tartrate supports crystallization demonstrations and salt chemistry teaching.
E337 Sodium potassium tartrate helps illustrate ionic crystals and hydration behavior.
E337 Sodium potassium tartrate is used in piezoelectric crystal demonstrations and historical device examples in education.
E337 Sodium potassium tartrate supports discussion of Rochelle salt crystals and piezoelectric effects.
E337 Sodium potassium tartrate helps illustrate materials science concepts in teaching settings.
E337 Sodium potassium tartrate is used in product development to tune acidity character in grape and berry flavor systems.
E337 Sodium potassium tartrate supports achieving target pH while maintaining desired tartness profile.
E337 Sodium potassium tartrate helps optimize flavor authenticity in wine-related products.
E337 Sodium potassium tartrate is used in manufacturing troubleshooting to correct pH drift and sourness variability.
E337 Sodium potassium tartrate supports rapid adjustment to meet specification pH and flavor.
E337 Sodium potassium tartrate helps prevent spoilage and off-flavor issues caused by incorrect acidity.
E337 Sodium potassium tartrate is used in quality control to verify assay, pH contribution, and impurity limits in food and pharma grades.
E337 Sodium potassium tartrate supports titration and ion analysis for tartrate, sodium, and potassium content.
E337 Sodium potassium tartrate helps ensure batch-to-batch consistency and regulatory compliance.
E337 Sodium potassium tartrate is used in export products where stable acidity and buffering are needed in permitted applications.
E337 Sodium potassium tartrate supports consistent quality during long logistics chains.
E337 Sodium potassium tartrate helps reduce returns caused by pH drift and flavor instability.
E337 Sodium potassium tartrate is used in R&D to compare buffer salts for taste, stability, and processing performance.
E337 Sodium potassium tartrate supports selection of best salt form for a target product.
E337 Sodium potassium tartrate helps optimize formulation performance while maintaining acceptable sensory quality.
DESCRIPTION
E337 Sodium Potassium Tartrate is a double salt of tartaric acid, and E337 Sodium Potassium Tartrate functions primarily as a buffering agent by balancing tartrate and tartaric acid forms to maintain stable pH.
E337 Sodium Potassium Tartrate reduces harsh sourness by moderating free acid levels, and this helps improve palatability in beverages and acidic foods.
E337 Sodium Potassium Tartrate can bind certain metal ions, and this sequestration helps reduce oxidative discoloration and off-flavor development in sensitive products.
E337 Sodium Potassium Tartrate contributes both sodium and potassium, and this dual-ion nature can help fine-tune ionic strength and taste compared with single-cation tartrate salts.
E337 Sodium Potassium Tartrate should be used according to applicable food additive regulations and good manufacturing practices for the target market.
E337 Sodium Potassium Tartrate should be dosed carefully because excessive buffering salts can flatten flavor and shift pH outside the desired range.
E337 Sodium Potassium Tartrate is commonly supplied as a tetrahydrate crystalline powder, and hydration state affects water content and handling behavior.
E337 Sodium Potassium Tartrate should be stored in tightly closed containers in a cool, dry place to prevent moisture pickup and caking.
E337 Sodium Potassium Tartrate should be handled with good hygiene and dust control practices during bulk powder processing.
E337 Sodium potassium tartrate is a double salt of tartaric acid containing both sodium and potassium, commonly known as Rochelle salt.
E337 Sodium potassium tartrate is typically supplied as colorless to white crystals with good water solubility.
E337 Sodium potassium tartrate provides tartrate ions that can contribute buffering and complexation effects in formulations.
E337 Sodium potassium tartrate is used in foods as an acidity regulator and buffer salt, often paired with tartaric acid systems.
E337 Sodium potassium tartrate can help moderate tartness and stabilize pH in fruit and grape flavor applications.
E337 Sodium potassium tartrate can also act as a complexing agent for certain metal ions, influencing stability in some products.
E337 Sodium potassium tartrate has a well-known role in education as a classic crystallization material and historical piezoelectric crystal example.
E337 Sodium potassium tartrate performance depends on grade, hydration state, concentration, and the presence of other ions.
E337 Sodium potassium tartrate should be stored in tightly closed containers in a cool, dry place to prevent moisture pickup and caking.
PROPERTIES
Chemical Formula: C4H4KNaO6·4H2O (common tetrahydrate)
Molecular Weight: 282.22 g/mol (tetrahydrate)
Common Name: E337 Sodium Potassium Tartrate
Chemical Type: Tartrate double salt; acidity regulator; buffering agent; sequestrant
Appearance: White crystalline powder
Odor: Odorless
Taste: Mild salty with tartrate note (concentration dependent)
Solubility: Soluble in water
Buffering Range: Effective in acidic pH systems when paired with tartaric acid
Chelation: Can bind some metal ions and improve stability in sensitive products
Thermal Behavior: Hydrate loses water on heating; decomposes at high temperature
Hygroscopicity: Slightly hygroscopic; moisture control needed for powder storage
Storage Temperature: 15–30°C, tightly closed, dry
Shelf Life: Typically 24–60 months in original sealed packaging (supplier dependent)
FIRST AID
Inhalation:
Move to fresh air if dust is inhaled.
Seek medical attention if respiratory irritation persists.
Avoid breathing dust during powder handling.
Skin Contact:
Wash with soap and water after contact.
Remove contaminated clothing and wash before reuse.
Seek medical advice if irritation develops or persists.
Eye Contact:
Rinse cautiously with water for several minutes.
Remove contact lenses if present and easy to do, then continue rinsing.
Seek medical attention if irritation persists.
Ingestion:
Rinse mouth with water.
Seek medical attention if discomfort occurs or if a large amount is swallowed.
Never give anything by mouth to an unconscious person.
Note to Physicians:
Treat symptomatically.
No specific antidote is required.
Provide supportive care as needed.
HANDLING AND STORAGE
Handling:
Use appropriate PPE including gloves and safety glasses for bulk handling.
Avoid generating dust and avoid inhalation of fine powder.
Maintain good hygiene and clean-up practices in handling areas.
Ventilation:
Use general ventilation for normal handling.
Use local exhaust where dust may be generated during powder transfer.
Minimize airborne particulate accumulation in enclosed areas.
Storage:
Store in tightly closed containers in a cool, dry place.
Protect from moisture to prevent caking and maintain free-flowing behavior.
Keep containers properly labeled and protected from contamination.
Spill and Leak Procedures:
Sweep up spilled powder and avoid dust generation.
Collect into suitable containers for reuse or disposal according to local regulations.
Clean residues with water if needed and dry the area to prevent slip hazards.
Handling Precautions:
Balance E337 Sodium Potassium Tartrate with E334 Tartaric Acid to achieve target pH, buffering behavior, and desired flavor profile because tartrate salts can reduce perceived sourness.
Evaluate sodium and potassium contributions because E337 Sodium Potassium Tartrate affects mineral content, taste, and nutrition labeling.
Rotate stock using FIFO practices to maintain consistent quality and predictable buffering performance.
