E 331
CAS Number: 68-04-2
APPLICATIONS
E 331 is chiefly used as a food additive, usually for flavor or as a preservative.
Furthermore, E 331 is anticoagulant for collection of blood.
In photography; as sequestering agent to remove trace metals; as emulsifier, acidulant and sequestrant in foods.
E 331 is an anticoagulant also used as a biological buffer.
In food industry, E 331 is used as a flavor and stabilizer.
In pharmaceutical industry, E 331 is used as anticoagulant, reducer of phlegm and diuretic.
E 331 has the chemical formula of Na3C6H5O7.
E 331 is used to balance pH levels and as a water softener.
Moreover, E 331 is also used in cosmetics such as make-up and lipstick, in baby products like wipes, in soaps and, of course, laundry detergents.
E 331 is a small white crystal or powder, soluble in water with a slight acidic or sour taste.
Besides, E 331 is mainly used in soft drinks, frozen deserts, meat products, diuretic and expectorant and an anti coagulant for blood withdrawn from the body.
E 331 is a pure product small clumps may form over time, simply crush them with a spoon.
In addition, E 331 will have no effect on the functionality of the product.
Effect and application of E 331:
During the process of clinically taking fresh blood, adding some amount of sterile E 331 can play a role in prevent blood clotting.
E 331 is exactly taking advantage of the features that calcium citrate can form soluble complexes with calcium ion.
In the field of medicine, E 331 is used for the in vitro anti-clotting drugs and anticoagulants drugs, phlegm drugs, and diuretics drugs during blood transfusions.
E 331 can also used for cyanide-free electroplating industry; also used as developer for photographic industry.
Additionally, E 331 can be used as flavoring agents, buffering materials, emulsifiers, and stabilizer in the food industry.
E 331 is also widely used in chemical, metallurgical industry, the absorption of sulfur dioxide exhaust with the absorption rate of 99% and regenerateliquid sulfur dioxide citrate for recycle application.
More to that, E 331 has a good water solubility and a excellent cheating capability with Ca2 +, Mg2 + and other metal ions.
E 331 is biodegradable and has a strong dispersing ability and anti-redeposition ability.
Daily-applied chemical detergents use it as alternative to trimer sodium phosphate for production of non-phosphorus detergent and phosphate-free liquid detergent.
Adding a certain amount E 331 to the detergent can significantly increase the cleaning ability of detergent cleaning.
The large scale of application of sodium tripolyphosphate as a builder in detergents is an important discovery in synthetic detergent industry.
E 331 is non-toxic without environmental pollution.
Further to that, E 331 can also be acted as a buffer for the production of cosmetics.
Applications of E 331:
Foods
E 331 is chiefly used as a food additive, usually for flavor or as a preservative.
Furthermore, E 331 is employed as a flavoring agent in certain varieties of club soda.
E 331 is common as an ingredient in bratwurst, and is also used in commercial ready-to-drink beverages and drink mixes, contributing a tart flavor.
E 331 is found in gelatin mix, ice cream, yogurt, jams, sweets, milk powder, processed cheeses, carbonated beverages, and wine, amongst others.
Moreover, E 331 can be used as an emulsifying stabilizer when making cheese.
E 331 allows the cheese to melt without becoming greasy by stopping the fats from separating.
As a conjugate base of a weak acid, citrate can perform as a buffering agent or acidity regulator, resisting changes in pH.
E 331 is used to control acidity in some substances, such as gelatin desserts.
Besides, E 331 can be found in the milk minicontainers used with coffee machines.
E 331 is the product of antacids, such as Alka-Seltzer, when they are dissolved in water.
The pH of a solution of 5 g/100 ml water at 25 °C is 7.5 – 9.0.
In addition, E 331 is added to many commercially packaged dairy products to control the PH impact of the gastrointestinal system of humans, mainly in processed products such as cheese and yogurt.
E 331 is a common ingredient in Bratwurst, and is also used to contribute a tart flavor in commercial, ready-to- drink beverages and drink mixes.
Additionally, E 331 is found in gelatin mix, ice-cream, jams, sweets, milk powder, processed cheeses, carbonated beverages, and wine.
E 331 is also used as an emulsifier for oils in the cheesemaking process.
More to that, E 331 allows cheese to melt without becoming greasy.
Historically, sodium phosphate was used to keep water and fat droplets mixed when cheese is melted.
Uses of E 331:
E 331 can be used as Ph adjusting agents and emulsifying enhancers applied to jam, candy, jelly and ice cream; its combination with citric acid has aneffect of alleviating tour; it also has effects on forming complex with metal ions.
China rules that E 331 can be applied to various types of food with appropriate usage according to the absolute necessity.
E 331 can be used as a food additive, as complex agent and buffering agent in electroplating industry; at the field of pharmaceutical industry, it is used forthe manufacturing of anti-clotting drugs, and used as the detergent additives in light industry.
Further to that, E 331 is used as the analysis agents used for chromatography analysis and can also used for preparing bacterial culture medium; moreover, it can also be applied into pharmaceutical industry.
E 331 can be used for the flavoring processing of food, as stabilizers, buffers and deputy complex-forming agents in non-toxic electroplating industry; at pharmaceutical industry, it is used as anti-clotting agent, phlegm drugs and diuretics drugs.
Additionally, E 331 can also be used in brewing, injection, newspaper and movies medicines.
E 331 has xcellent solubility, and the solubility of E 331 increases with increasing temperature of water.
Furthermore, E 331 has a good capability for pH adjustment and a good buffering property.
E 331 is a weak acid-strong alkali salt; When combined with citrate, they can form a pH buffer with strong compatibility; therefore, this is very useful forsome cases in which it is not suitable to have large change of pH value.
In addition, E 331 also has excellent retardation performance and stability.
E 331 is easily soluble in water, glycerol, alcohol and other organic solvents.
Moreover, E 331 is decomposed by overheating, slightly deliviate in humid environment and slightly weathering in hot air.
Application of E 331:
E 331 is used as acidity regulator, flavor agent and stabilizer in food and beverage industry.
Besides, E 331 used as an anticoagulant, phlegm dispersant and diuretic in the pharmaceutical industry; In detergent industry, sodium tripolyphosphate can besubstituted as non-toxic detergent additive.
E 331 is also used in brewing, injection, photographic medicine and electroplating.
E 331 is used as a natural food preservative.
Some of the benefits of using E 331 as a Food additive include better circulation and blow flow as well as balancing out Ph levels in the body.
E 331 is also a powerful source of antioxidants.
In addition, E 331 is a non-toxic, neutral salt with low reactivity.
E 331 is chemically stable if stored at ambient temperatures.
More to that, E 331 is fully biodegradable and can be disposed of with regular waste or sewage.
Further to that, E 331 is widely used in foods, beverages, and various technical applications mainly as buffering, sequestering, or emulsifying agent.
E 331 may be stored for 36 months from the date of manufacture in the unopened original container.
Relative humidity of 50% and a temperature range of 10–30°C are the most suitable conditions for storage.
E 331 is an organic compound that has white to colorless crystals.
Additionally, E 331 is odourless, with a cool salty taste.
E 331 is stable in room temperature and air, slightly soluble in wet air, weathering in hot air.
Furthermore, E 331 loses crystal water heated to 150 ℃.
E 331 possesses a saline, mildly tart flavor, and is a mild alkali.
Moreover, E 331 is mildly basic and can be used along with citric acid to make biologically compatible buffers.
E 331 is primarily used as a food additive, usually for flavor or as a preservative.
In certain varieties of club soda, E 331 is employed as a flavoring agent.
E 331 is a common ingredient in Bratwurst.
E 331 is currently the most important citrate.
Besides, E 331 is produced by two steps: first starch food is fermented to generate citric acid; secondly, citric acid is neutralized by alkali to generate the final products.
E 331 has the following excellent performance:
Safe and nontoxic properties:
Since the basic raw material for the preparation of E 331 mainly comes from the food, E 331 is absolutely safeand reliable without causing harm to human health.
The United Nations Food and Agriculture and the World Health Organization has no restriction in its daily intake, which means that this product can be considered as non-toxic food.
E 331 is biodegradable.
After subjecting to the dilution of a large amount of water, E 331 is partially converted into citrate, which coexists with E 331 in the same system.
Citrate is easy to subject to biological degradation at water by the action of oxygen, heat, light, bacteria and microbes.
E 331's decomposition pathways are generally going through aconitic acid, itaconic acid, citraconic acid anhydride to be further converted to carbondioxide and water.
The ability of forming complex with metal ions.
E 331 has a good capability of forming complex with some metal ions such as Ca2+, Mg2+; for other ions such as Fe2+, E 331 also has a good complex-forming ability.
E 331 is colorless or white crystal and crystalline powder.
In addition, E 331 is inodorous and taste salt, cool. It will loss crystal water at 150° C and decompose at more high temperature.
E 331 dissolves in ethanol.
E 331 is used to enhance flavor and maintain stability of active ingredients in food and beverage in detergent industry, it can replace Sodiumtripolyphosphate as a kind of safe detergent it can aloe be used in fermentation, injection, photography and metal plating.
E 331 is sometimes used as an acidity regulator in drinks, and also as anemulsifier for oils when making cheese.
More to that, E 331 allows the cheeses to melt without becoming greasy.
Chemical Properties of E 331:
E 331 is colorless crystals or white crystalline powder, and is odorless, cool and salty.
Further to that, E 331 has no melting point with a relative density of 1.857.
E 331 is stable in air at room temperature with loss of crystal water when being heated to 150 °C loss of crystal water; further heating will cause itsdecomposition.
E 331 is insoluble in ethanol but highly soluble in water.
5% aqueous solution has a pH value of 7.6 to 8.6.
Alternative uses:
E 331 can be used in cleaning; E 331 has been found to be a particularly effective agent in the removal of carbonate scale from kettles, as wellas the cleaning of automobile radiators.
Additionally, E 331 is also used in detergents and dishwasher tablets.
E 331 acts as a pH regulator and water softener.
Citric acid adds sour taste to dairy products, but E 331s sour taste is strong, and the sour taste can be eased with the combination of E 331, so these two ingredients are often used together in yogurt to adjust and improve the sour taste.
Cheese is an emulsion of dairy fat, protein and water, and E 331 tends to break down at high temperatures.
While E 331 is melting, E 331 works as an emulsifier to prevent cheese curdling or the separation of fat and protein by keeping fat and proteintogether and binding calcium ions in the cheese.
The usage of E 331 in cheese is around 3%, depending on your recipes.
Cheese with E 331 can melt evenly and produce a smooth & creamy sauce.
This property makes E 331 possible to obtain portable and sliceable cheese (in mold, can take everywhere) in home cooking.
E 331 is used to adjust the tartness in Coca Cola’s beverages.
And you can find E 331 in the ingredient lists of Sprite, Vitamin water and other drinks.
Furthermore, E 331 is also added in sports and energy drinks for such purposes, such as in the products of Redbull and Monster.
E 331 is the sodium salt of citric acid with the chemical formula of Na3C6H5O7.
Moreover, E 331 possesses a saline, mildly tart, flavor.
For this reason, citrates of certain Alkaline and Alkaline Earth metals (e.g. sodium and calcium citrates) are commonly known as sour salt (occasionally citric acid is erroneously termed sour salt).
E 331 is chiefly used as a food additive, usually for flavor or as a preservative.
Besides, E 331 is employed as a flavoring agent in certain varieties of club soda.
E 331 is common as an ingredient in lemon-lime and citrus soft drinks such as Ting, contributing to their tart tastes, and can also be found in such energy drinks as Rockstar and Red Bull.
In 1914, the Belgian doctor Albert Hustin and the Argentine physician and researcher Luis Agote successfully used E 331 as an anticoagulant in blood transfusions.
E 331 continues to be used today in blood collection tubes and for the preservation of blood in blood banks.
The citrate ion chelates calcium ions in the blood, disrupting the blood clotting mechanism.
As a conjugate base of a weak acid, citrate can perform as a buffering agent, resisting changes in pH.
E 331 is used to control acidity in some substances, such as gelatin desserts.
In addition, E 331 can be found in the mini milk containers used with coffee machines.
The compound is the product of antacids such as Alka-Seltzer when they are dissolved in water.
Recently, Oopvik, et al. showed that use of E 331 (approx. 37 grams) improved running performance over 5 km by 30 seconds.
E 331 is used to relieve discomfort in urinary tract infections such as cystitis, to reduce the acidosis seen in distal renal tubular acidosis, and can also be used as an osmotic laxative.
More to that, E 331 was used by chef Heston Blumenthal in his television series In Search of Perfection as a key ingredient in making cheese slices
E 331, Anhydrous, USP is used to treat certain metabolic problems (acidosis) caused by kidney disease.
E 331 is a particularly effective agent for removal of carbonate scale from boilers without removing them from operation and for cleaning automobile radiators.
In 1914, the Belgian doctor Albert Hustin and the Argentine physician and researcher Luis Agote successfully used E 331 as an anticoagulant in blood transfusions, with Richard Lewisohn determining its correct concentration in 1915.
E 331 continues to be used today in blood-collection tubes and for the preservation of blood in blood banks.
The citrate ion chelates calcium ions in the blood by forming calcium citrate complexes, disrupting the blood clotting mechanism.
Recently, E 331 has also been used as a locking agent in vascath and haemodialysis lines instead of heparin due to its lower risk of systemic anticoagulation.
E 331 is used to relieve discomfort in urinary-tract infections, such as cystitis, to reduce the acidosis seen in distal renal tubular acidosis, and can also be used as an osmotic laxative.
E 331 is a major component of the WHO oral rehydration solution.
Further to that, E 331 is used as an antacid, especially prior to anaesthesia, for caesarian section procedures to reduce the risks associated with the aspiration of gastric contents.
DESCRIPTION
E 331 is a tribasic salt of citric acid.
Additionally, E 331 has a sour taste similar to citric acid, and is salty as well.
E 331 is often used as a food preservative, and as a flavoring in the food industry.
In the pharmaceutical industry E 331 is used to control pH.
E 331 may be used as an alkalizing agent, buffering agent, emulsifier, or sequestering agent.
According to the FDA Select Committee on Generally Recognized as Safe (GRAS) food substances, citrate salts, including E 331, are generally regarded as safe when used in normal quantities.
E 331, (molecular formula: Na3C6H5O7 • 2H2O) has molecular weight of 294.1, is a colorless crystal or white crystalline powder product.
Furthermore, E 331 is odorless, salty taste, and cool.
E 331 will lose its crystal water at 150 °C and will be decomposed at even higher temperature.
E 331 also has slight deliquescence in wet air and has weathering property upon hot air.
Moreover, E 331 is soluble in water and glycerol, but insoluble in alcohol and some other organic solvents.
E 331 has no toxic effect, and has pH adjusting capability as well as having a good stability, and therefore can be used in the food industry.
E 331 has the greatest demand when being used as a food additive.
As food additives, E 331 is mainly used as flavoring agents, buffers, emulsifiers, bulking agents, stabilizers and preservatives.
In addition, combination between E 331 and citric acid can be used in a variety of jams, jelly, juice, drinks, cold drinks, dairy products and pastries gelling agents, flavoring agents and nutritional supplements.
Besides, E 331 dihydrate consists of odorless, colorless, monoclinic crystals, or a white crystalline powder with a cooling, saline taste.
E 331 is slightly deliquescent in moist air, and in warm dry air it is efflorescent.
Although most pharmacopeias specify that E 331 is the dihydrate, the USP 32 states that E 331 may be either the dihydrate or anhydrous material.
PROPERTIES
Chemical formula: Na3C6H5O7
Molar mass: 258.06 g/mol (anhydrous), 294.10 g/mol (dihydrate)
Appearance: White crystalline powder
Density: 1.7 g/cm3
Melting point: > 300 °C (572 °F; 573 K) (hydrates lose water ca. 150 °C)
Boiling point: Decomposes
Solubility in water: Pentahydrate form: 92 g/100 g H2O (25 °C)
Odor: Characteristic
Clarity and color of Solution: Conforms
Loss on drying: 11.0 - 13.0%
Usage: acidity regulator etc.
Pb: < 10ppm
Assay: 99.0 - 101.0%
Chemical formula: C6H5O7Na3.2H2O
Sulfate (SO4): 150 ppm max
Chloride (Cl): 50 ppm max
Alkalinity: Conforms
Oxalate: 300 ppm max
Storage: in the shade cool
FIRST AID
DO NOT INDUCE VOMITING.
If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center.
Be prepared to transport the victim to a hospital if advised by a physician.
If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body.
DO NOT INDUCE VOMITING.
HANDLING AND STORAGE
Storage:
E 331 dihydrate is a stable material.
Aqueous solutions may be sterilized by autoclaving.
On storage, aqueous solutions may cause the separation of small, solid particles from glass containers.
The bulk material should be stored in an airtight container in a cool, dry place.
SYNONYMS
TriE 331
Preferred IUPAC name
Trisodium 2-hydroxypropane-1,2,3-tricarboxylate
Other names:
Citrosodine
Citric acid, trisodium salt
E 331
E331
68-04-2
6132-04-3 (dihydrate)
6858-44-2 (pentahydrate)
ChEMBL: ChEMBL1355
ChemSpider: 5989
ECHA InfoCard: 100.000.614
E number: E331iii (antioxidants, ...)
PubChem CID: 6224
RTECS number: GE8300000
UNII:
RS7A450LGA
B22547B95K (dihydrate)
CompTox Dashboard (EPA): DTXSID2026363
E 331
TRIE 331
68-04-2
Natrocitral
E 331 anhydrous
E 331, anhydrous
Citric acid, trisodium salt
TriE 331, anhydrous
1,2,3-Propanetricarboxylic acid, 2-hydroxy-, trisodium salt
Sodium 2-hydroxypropane-1,2,3-tricarboxylate
TriE 331 anhydrous
FEMA No. 3026
Citric acid trisodium salt
UNII-RS7A450LGA
E 331,anhydrous
MFCD00012462
RS7A450LGA
Citrosodine
CHEBI:53258
Citric acid trisodium salt, anhydrous
CITRIC ACID, SODIUM SALT
Citrosodina
Citnatin
Citreme
Citrosodna
E 331 hydrate
trisodium;2-hydroxypropane-1,2,3-tricarboxylate
1,2,3-Propanetricarboxylic acid, 2-hydroxy-, sodium salt (1:3)
CCRIS 3293
E 331 (Na3C6H5O7)
HSDB 5201
anhydrous E 331
994-36-5
Citric acid, trisodium salt, 98%, pure, anhydrous
EINECS 200-675-3
trisodium-citrate
tri-E 331
Trisodium 2-hydroxy-1,2,3-propanetricarboxylate
E 331 salt
88676-EP2272841A1
88676-EP2280001A1
88676-EP2301936A1
88676-EP2305825A1
E 331, 0.5M buffer solution, pH 5.0
E 331, 0.5M buffer solution, pH 5.5
E 331, 0.5M buffer solution, pH 6.0
E 331, 0.5M buffer solution, pH 6.5
Q409728
J-520101
Citric acid trisodium salt, anhydrous, >=98% (GC)
Citrate Solution, pH 3.6+/-0.1 (25 C), 27 mM
Citric acid trisodium salt, Vetec(TM) reagent grade, 98%
UNII-1Q73Q2JULR component HRXKRNGNAMMEHJ-UHFFFAOYSA-K
2-Hydroxy-1,2,3-propanenetricarboxylic acid trisodium salt dihydrate