Description

Trisodium Citrate Dihydrate is the dihydrate form of the trisodium salt of citric acid, a versatile and widely used organic chemical. This compound serves as a highly effective buffering agent, chelator, and emulsifying salt, making it indispensable for controlling pH and stabilizing formulations. It is a critical raw material for manufacturers in the food and beverage, pharmaceutical, and industrial cleaning sectors, where consistent quality and reliable supply are paramount.

Application

• Food & Beverage Industry: Primarily used as an acidity regulator, emulsifier, and preservative in soft drinks, jams, processed cheeses, and powdered beverages.
• Pharmaceuticals: Acts as an anticoagulant in blood collection tubes (blue-top tubes), a buffering agent in effervescent tablets, and an alkalizing agent in various formulations.
• Industrial Cleaning: Serves as a key builder and chelating agent in eco-friendly detergents and cleaning products, sequestering hard water ions like calcium and magnesium.
• Personal Care: Utilized as a pH adjuster and chelating agent in cosmetics, shampoos, and bath products to enhance stability and performance.
• Water Treatment: Employed to inhibit scale formation and as a biodegradable complexing agent in boiler and cooling water systems.
• Construction: Functions as a retarder in cement and plaster applications to control the setting time.
• Electroplating: Used in electroplating baths as a complexing agent for metal ions.
• Laboratory & Biotechnology: A common component of buffer solutions, such as citrate buffer, used in molecular biology and biochemistry.

Basic Information

Product Name	Trisodium Citrate Dihydrate
CAS No.	6132-04-3
Molecular Formula	C6H5Na3O7 • 2H2O
Molecular Weight	294.10 g/mol
Synonyms	Citric Acid Trisodium Salt Dihydrate; Sodium Citrate Dihydrate; Trisodium 2-Hydroxy-1,2,3-propanetricarboxylate Dihydrate; Natriumcitrat Dihydrat; E331; INS 331(iii); TSC Dihydrate; Citrosodina
EINECS	200-675-3

Quality Control

Our Trisodium Citrate Dihydrate is manufactured under strict quality management systems. We offer grades compliant with major international pharmacopoeial standards, including USP-NF, Ph. Eur., BP, JP, and food-grade specifications like FCC. Every batch undergoes rigorous analytical testing to ensure identity, purity, and safety. Certificates of Analysis (COA) documenting full specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept in original packaging or a moisture-proof container to prevent caking and degradation. Keep away from strong acids and strong oxidizing agents.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (on dried basis)	99.0% - 100.5%
pH (5% solution)	7.5 - 9.0
Loss on Drying	10.0% - 13.0%
Water Insoluble Matter	≤ 0.005%
Chloride (Cl)	≤ 0.001%
Sulfate (SO4)	≤ 0.005%
Oxalate	Passes test
Heavy Metals (as Pb)	≤ 10 ppm
Arsenic (As)	≤ 3 ppm
Readily Carbonizable Substances	Passes test

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.