Sodium citrate, CAS No. 68-04-2

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68-04-2

Catalog No. EBD46957

CAS 68-04-2

Name Sodium citrate

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Basic Information

Synonyms: Citricacid,trisodiumsalt Sodiumcitrate,anhydrous anhydrousSodiumCitrate SodiumCitrateanhydrous trisodium2-hydroxypropane-1,2,3-tricarboxylateanhydrous Sodiumcitrate Trisodiumcitrate trisodiumcitrateanhydrous Sodiumcitrate,tribasic SodiumCitrateDehydrate 2-Hydroxy-1,2,3-propanetricarboxylicacidtrisodiumsalt 1,2,3-propanetricarboxylicacid,2-hydroxy-,sodiumsalt,hydrate(1:3:?) 1,2,3-propanetricarboxylicacid,2-hydroxy-,trisodiumsalt,hydrate(9ci) Citricacid,trisodiumsalthydrate

Molecular Formula: C6H5Na3O7

Molecular Weight: 258.07

MDL Number: MFCD00012462

Categories: Medicinal Chemistry > Pharmaceutical Excipients > Isotonic Agents, pH Adjusters, and Buffers Functional Chemicals > Food Additives and Ingredients > Acidity Regulators

Product Description:

Sodium citrate is the sodium salt of citric acid, commonly available as dihydrate (C6H5Na3O7·2H2O) or anhydrous forms. It is a white, crystalline powder with a salty, slightly tart taste, highly soluble in water. Its primary applications are as a buffering agent, sequestrant, and emulsifying salt. In the pharmaceutical industry, it is widely used as an anticoagulant in blood collection tubes (by chelating calcium ions), as an alkalizing agent in oral and intravenous solutions, and as a component in effervescent formulations. In the food industry, it serves as an acidity regulator, flavor enhancer, and preservative in beverages, dairy products, and processed foods. Additionally, sodium citrate finds use in personal care products, detergents, and as a biodegradable builder in cleaning formulations. It is generally recognized as safe (GRAS) by regulatory bodies when used within specified limits.

Physical Properties

Melting Point: 300°C

Boiling Point: 309.6 °C at 760 mmHg

Flash Point: 155.2 °C

Density: 1.008 g/mL at 20 °C

Storage: 2-8°C

Analytical Data

Appearance: white to off-white crystalline powder