Description

Potassium Tartrate is a versatile potassium salt of tartaric acid, widely recognized for its role as a buffering and sequestering agent. Its primary value lies in providing a reliable source of potassium and tartrate ions, which are essential for controlling pH and stabilizing formulations across various industries. This product is a critical raw material for manufacturers in the food and beverage, pharmaceutical, and chemical synthesis sectors seeking consistent quality and performance.

Application

• Food & Beverage Industry: Used as a buffering agent, stabilizer, and sequestrant in products like baking powder, jellies, and effervescent beverages.
• Pharmaceutical Manufacturing: Serves as an excipient in tablet formulations and as a component in some medicinal salts (e.g., potassium supplements).
• Chemical Synthesis & Catalysis: Acts as a chiral auxiliary or a precursor in organic synthesis and as a component in certain catalytic systems.
• Laboratory & Analytical Reagents: Employed in analytical chemistry as a standard or reagent, particularly in Fehling's solution for sugar detection.
• Electroplating & Metal Treatment: Functions as a complexing agent in electroplating baths and in metal surface treatment processes.
• Textile & Leather Processing: Utilized as a mordant in dyeing processes to improve color fastness on fabrics and leather.

Basic Information

Product Name	Potassium Tartrate
CAS No.	921-53-9
Molecular Formula	C4H4K2O6 • ½H2O
Molecular Weight	235.27 g/mol (hemihydrate)
Synonyms	Dipotassium L-tartrate; Dipotassium tartrate; Potassium bitartrate (ambiguous, often refers to cream of tartar); Potassium L-tartrate hemihydrate; E336(ii); Seignette's salt; Rochelle salt (Note: often refers to potassium sodium tartrate); L-(+)-Tartaric acid dipotassium salt; 2,3-Dihydroxybutanedioic acid dipotassium salt
EINECS	213-067-8

Quality Control

Our Potassium Tartrate is produced under a strict quality management system. We offer various grades, including Food Grade (FCC) and Reagent Grade, with specifications tailored to meet the stringent requirements of the pharmaceutical and food industries. Each batch is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles to ensure compliance with relevant standards such as USP, FCC, and in-house 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). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to minimize exposure to atmospheric moisture, which can lead to caking or degradation.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (on dried basis)	≥ 99.0%
Loss on Drying	3.0 - 4.5%
pH (5% solution)	6.5 - 8.5
Heavy Metals (as Pb)	≤ 10 ppm
Arsenic (As)	≤ 3 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.