Description

Sodium Tartrate is the sodium salt of tartaric acid, a versatile organic compound widely utilized for its chelating, buffering, and stabilizing properties. This high-purity material is essential for processes requiring precise pH control and metal ion sequestration. It serves as a critical ingredient for manufacturers in the pharmaceutical, food & beverage, and industrial chemical sectors, where consistent quality and reliable supply are paramount.

Application

• Pharmaceutical Excipient: Used as a buffering agent, chelating agent, and stabilizer in various drug formulations and injectable solutions.
• Food Additive (E335): Functions as an emulsifier, sequestrant, and pH regulator in processed foods, beverages, and baking powders.
• Electroplating & Metal Finishing: Acts as a complexing agent in electroplating baths to improve deposit quality and brightness.
• Laboratory Reagent: Employed in analytical chemistry as a standard and in buffer solutions for biochemical assays.
• Textile Processing: Serves as a mordant in dyeing processes to improve color fastness and uniformity.
• Construction Industry: Used as a setting retarder and water reducer in certain specialty cement and concrete formulations.

Basic Information

Product Name	Sodium Tartrate
CAS No.	51307-92-7
Molecular Formula	C4H4Na2O6 • nH2O
Molecular Weight	Anhydrous: 194.05 g/mol
Synonyms	Disodium Tartrate; L-(+)-Tartaric Acid Disodium Salt; E335; Sodium L-Tartrate; Rochelle Salt (when combined with potassium); Seignette Salt; 2,3-Dihydroxybutanedioic Acid Disodium Salt; Butanedioic Acid, 2,3-dihydroxy-, Disodium Salt
EINECS	Contact for details

Quality Control

Our Sodium Tartrate is manufactured under a strict quality management system. We offer grades suitable for food (FCC) and pharmaceutical applications, with comprehensive testing to ensure identity, purity, and safety. A Certificate of Analysis (COA) is provided with each batch, detailing key parameters such as assay, heavy metals, and loss on drying to verify compliance with relevant specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent caking or degradation.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (Anhydrous Basis)	98.0% - 102.0%
pH (5% Solution)	7.0 - 9.0
Loss on Drying	≤ 1.0%
Heavy Metals (as Pb)	≤ 10 ppm
Chloride (Cl)	≤ 0.01%
Sulfate (SO4)	≤ 0.01%

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