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Product Name: sodium citrate, dihydrate
CAS: 6132-04-3
Molecular Formula: C16H19NO2S
Molecular Weight: 289.393
Synonyms: Citric acid trisodium salt dihydrate;Trisodium citrate dihydrate

Sodium citrate (Trisodium citrate CAS 68-04-2, Trisodium citrate dihydrate CAS 6132-04-3) is colorless crystals or white crystalline powder. Taste salty, and have cool and refreshing feeling.Soluble in water and glycerin, hardly soluble in alcohol and other organic solvents. Deliquescence, weathering resistance.In the hot air above 150℃ water of crystallization and decomposition.

Specification (BP98 USP30 E331)

Description                                Crystalline white powder or colourless crystals
Content                                     99.0-101.0%
Sulphate                                    ≤0.015%
Heavy metals(As Pb)                   ≤0.001%
Oxalate(As H2C2O4)                   ≤0.03%
Chloride                                     ≤0.005%
Loss on drying                            11.0-13.0%
pH value(5% aqueous solution)    7.5-9
Arsenic(As)                                ≤1ppm
Lead(Pb)                                    ≤1ppm
* Please refer to specific Certificate of Analysis for details.

Application

Food

Sodium citrate is chiefly used as a food additive, 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 flavor. It is found in ice-cream, jams, sweets, milk powder, processed cheeses, carbonated beverages, and wine.

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. 

Medical use

Sodium citrate can be used 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 citrate 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. It is used as an antacid to reduce the risks associated with the aspiration of gastric contents.

Boiler descaling

Sodium citrate is a particularly effective agent for removal of carbonate scale from boilers without removing them from operation[4] and for cleaning automobile radiators

Packing

25kg/bag; 25,000kg/ 20″FCL without pallet ,22,000kg/ 20″FCL with pallet