Description

Disodium Citrate is a versatile sodium salt of citric acid, widely recognized for its excellent buffering, chelating, and emulsifying properties. This high-purity compound is essential for ensuring product stability, controlling pH, and enhancing flavor profiles across multiple industries. It is a critical ingredient for manufacturers in the food & beverage, pharmaceutical, and personal care sectors seeking reliable, compliant, and effective multifunctional additives.

Application

• Food & Beverage Industry: Primarily used as an acidity regulator, emulsifier, and sequestrant in processed cheeses, soft drinks, jams, and powdered beverages.
• Pharmaceuticals: Serves as an excipient in effervescent formulations and as an anticoagulant in blood collection tubes (as trisodium citrate dihydrate is often used, disodium citrate can be part of buffer systems).
• Personal Care & Cosmetics: Acts as a pH buffer and chelating agent in creams, lotions, and hair care products to enhance stability.
• Industrial Applications: Used in cleaning formulations for its water-softening and descaling properties, and in electroplating baths.
• Biotechnology & Molecular Biology: A key component in various buffer solutions, including SSC buffer for nucleic acid hybridization.

Basic Information

Product Name	Disodium Citrate
CAS No.	144-33-2
Molecular Formula	C6H6Na2O7
Molecular Weight	236.09 g/mol
Synonyms	Disodium Hydrogen Citrate; Sodium Citrate Dibasic; Citric Acid Disodium Salt; 1,2,3-Propanetricarboxylic acid, 2-hydroxy-, disodium salt; E331(ii); INS 331(ii); Natriumcitrat
EINECS	205-623-3

Quality Control

Our Disodium Citrate is manufactured under a strict quality management system. We offer grades compliant with major pharmacopoeial standards such as USP, EP, BP, and FCC for food applications. Every batch undergoes rigorous analytical testing to ensure identity, purity, and safety. A comprehensive Certificate of Analysis (COA) is provided with each shipment to guarantee traceability and compliance with your specifications.

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); therefore, the original container must be kept tightly sealed after use to prevent caking and degradation due to moisture absorption.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (on dried basis)	99.0% - 101.0%
pH (5% solution)	4.0 - 5.0
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm
Chloride (Cl)	≤ 50 ppm
Sulfate (SO4)	≤ 150 ppm

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