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Sodium Citrates is the sodium salt of Citric Acid.
Like Citric Acid and other salts, Sodium Citrates has a sour and salty taste.
Sodium Citrates is commonly known as sour salt, buffer salt or trisodium citrate and is mainly used for flavouring food and drinks or as a preservative.
CAS: 68-04-2
MF: C6H9NaO7
MW: 216.12
EINECS: 200-675-3
Synonyms
1,2,3-Propanetricarboxylicacid, 2-hydroxy-, sodiuM salt (1:3);Citric acid trisodium salt Vetec(TM) reagent grade, 98%;food additive sodium citrate;CITRIC ACID TRISODIUM SALT, ANHYDROU;CITRIC ACID TRISODIUM SALT, VETEC;1,2,3-Propanetricarboxylicacid,2-hydroxy,trisodiumsalt;1,2,3-propanetricarboxylicacid2hydroxy-trisodiumsalt;2,3-propanetricarboxylicacid,2-hydroxy-trisodiumsalt
A useful quality of Sodium Citrate is that it reduces the acidity of foods and liquid solutions, so it allows spherification and reverse spherification with strongly acidic ingredients.
Sodium Citrates is also used as an antioxidant in food as well as a sequestrant.
Sodium Citrates dissolves easily and acts instantly.
A highly soluble powder.
Sodium citrate may refer to any of the sodium salts of citric acid (though most commonly the third):
Mono sodium citrate
Di sodium citrate
Tri sodium citrate
As food additives, the 3 forms of the salt are also collectively known by the E number E331.
Sodium Citrates has the chemical formula of Na3C6H5O7.
Sodium Citratesis some times referred to simply as sodium citrate, though sodium citrate can refer to any of the three sodium salts of citric acid.
Sodium Citrates 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).
Sodium citrate is the trisodium salt of citric acid.
Sodium Citrates has a role as a flavouring agent and an anticoagulant.
Sodium Citrates contains a citrate(3-).
Citric acid trisodium salt corresponds to a molecular weight of 258 Da.
Sodium Citrates has high sodium content and sieving coefficients.
Sodium citrate is widely used as an excipient in the pharmaceutical industry.
Sodium Citrates helps regulate the pH as a stabilizer or an alkalizing agent.
Sodium citrate can also bind to certain metal ions in drug formulations providing stability and avoiding ht interference with the drug's main activity.
In the food industry, its main use is as a food preservative.
Sodium citrate, the sodium salts of citric acid with the European food additive number E331.
This ingredient is usually added together with citric acid to enhance flavor or reduce the PH level in food and drinks, also it can act as an emulsifier in cheese making.
Sodium Citrates commonly refers to trisodium citrate (E331iii) when we talk about sodium citrate.
Sodium Citrates, with the CAS number 68-04-2, is a sodium salt of citric acid and is commonly used as a food additive, buffering agent, and anticoagulant in medical applications.
Sodium Citrates appears as a white, crystalline powder that is highly soluble in water, forming a clear solution.
Sodium Citrates has a slightly salty taste and is often utilized in the food industry to enhance flavor and preserve freshness.
In biochemical applications, Sodium Citrates serves as a chelating agent, effectively binding metal ions and stabilizing solutions.
Sodium Citrates's pH is typically in the neutral range, making it suitable for various formulations.
Additionally, Sodium Citrates is recognized for its role in maintaining the stability of certain pharmaceuticals and is used in laboratory settings for its buffering capacity.
Sodium Citrates is generally regarded as safe for consumption, although excessive intake may lead to gastrointestinal discomfort.
Overall, Sodium Citrates is a versatile compound with significant applications across food, pharmaceutical, and biochemical industries.
Sodium citrate Chemical Properties
Melting point: 300°C
density: 1.008 g/mL at 20 °C
FEMA: 3026 | SODIUM CITRATE
storage temp.: 2-8°C
solubility: Water (Slightly)
form: Liquid
color: White to off-white
PH: 8.59(1 mM solution);8.9(10 mM solution);9.04(100 mM solution);9.26(1000 mM solution)
Odor: at 100.00%. odorless
Water Solubility: Soluble in water.
Sensitive: Hygroscopic
λmax λ: 260 nm Amax: ≤0.1
Stability: Hygroscopic
Cosmetics Ingredients Functions: CHELATING
FRAGRANCE
BUFFERING
InChI: 1S/C6H8O7.3Na/c7-3(8)1-6(13,5(11)12)2-4(9)10;;;/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);;;/q;3*+1/p-3
InChIKey: HRXKRNGNAMMEHJ-UHFFFAOYSA-K
LogP: -0.280 (est)
CAS DataBase Reference: 68-04-2(CAS DataBase Reference)
EPA Substance Registry System: Sodium Citrates (68-04-2)
Sodium citrate is odorless and has a pleasant, acid taste.
Sodium citrate is anhydrous or contains two molecules of water of crystallization
Uses
sodium citrate may be used in cosmetic formulations as an alkalizer and to bind trace metals in solutions (by means of a chelating action).
Sodium Citrates is the sodium salt of citric acid.
Sodium Citrates is a buffer and sequestrant obtained from citric acid as sodium citrate anhydrous and as sodium citrate dihydrate or sodium citrate hydrous.
the crystalline products are prepared by direct crystallization from aqueous solutions.
Sodium Citrates anhy- drous has a solubility in water of 57 g in 100 ml at 25°c, while sodium citrate dihydrate has a solubility of 65 g in 100 ml at 25°c.
Sodium Citrates is used as a buffer in carbonated beverages and to control ph in preserves.
Sodium Citrates improves the whipping properties in cream and pre- vents feathering of cream and nondairy coffee whiteners.
Sodium Citrates pro- vides emulsification and solubilizes protein in processed cheese.
Sodium Citrates prevents precipitation of solids during storage in evaporated milk.
in dry soups, Sodium Citrates improves rehydration which reduces the cooking time.
Sodium Citrates functions as a sequestrant in puddings.
Sodium Citrates functions as a complexing agent for iron, calcium, magnesium, and aluminum.
Typical usage levels range from 0.10 to 0.25%.
Sodium Citrates is also termed trisodium citrate.
Sodium Citrates is a buffer and sequestrant that is the trisodium salt of citric acid.
Sodium citrate is also known as citrate of soda, the white crystals or granular powder was obtained by neutralizing citric acid with sodium carbonate.
Sodium Citrates is soluble in water but less so in alcohol.
Sodium citrate was used as a preservative in albumen papers.
Food
Sodium citrate is chiefly used as a food additive E331, usually for flavor or as a preservative.
Sodium citrate is employed as a flavoring agent in certain varieties of club soda.
Sodium citrate is common as an ingredient in Bratwurst, and is also used in commercial ready to drink beverages and drink mixes, contributing a tart flavour.
Buffer
As a conjugate base of a weak acid, citrate can perform as a buffering agent or acidity regulator, resisting changes in pH. Sodium citrate is used to control acidity in some substances, such as gelatin desserts.
Sodium Citrates can be found in the mini milk containers used with coffee machines.
Sodium Citrates is the product of antacids, such as Alka- Seltzer, when they are dissolved in water.
Food
Sodium Citrates are used as acidity regulators in food and drinks, and also as emulsifiers for oils.
They are generally considered safe and are designated GRAS by the FDA.
Blood clotting inhibitor
Sodium citrate is used to prevent donated blood from clotting in storage, and can also be used as an additive for apheresis to prevent clots forming in the tubes of the machine.
By binding with calcium ions in the blood it prevents the process of coagulation.
Sodium Citrates is also used as an anticoagulant for laboratory testing, in that blood samples are collected into sodium citrate-containing tubes for tests such as the PT (INR), APTT, and fibrinogen levels.
Sodium Citrates is used in medical contexts as an alkalinizing agent in place of sodium bicarbonate, to neutralize excess acid in the blood and urine.
Metabolic acidosis
Sodium Citrates has applications for the treatment of metabolic acidosis and chronic kidney disease.
Ferrous nanoparticles
Along with oleic acid, Sodium Citrates may be used in the synthesis of magnetic Fe3O4 nanoparticle coatings.
Medical uses
In 1914, the Belgian doctor Albert Hustin and the Argentine physician and researcher Luis Agote successfully used sodium citrate as an anticoagulant in blood transfusions.
Sodium Citrates 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.
Sodium Citrates 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.
Sodium Citrates is a major component of the WHO Oral Rehydration Solution.
Preparation
Produced by the neutralization of citric acid with sodium hydroxide or sodium carbonate.
May be prepared in an anhydrous state or may contain 2 mole of water per mole of sodium citrate.
Biochem/physiol Actions
Citrate Concentrated Solution or sodium citrate is an anticoagulant used for collecting blood samples.
Sodium Citrates is useful in coagulation testing and for the erythrocyte sedimentation rate.
Sodium citrate eliminates calcium, which is known to mediate coagulation.
