Description

Potassium Tartrate Hemihydrate is a high-purity, crystalline salt of tartaric acid. It serves as a critical buffering agent, sequestrant, and stabilizer in various industrial and pharmaceutical processes. This compound is essential for manufacturers in the food, pharmaceutical, and chemical synthesis sectors seeking reliable and consistent raw material quality. Its unique properties make it suitable for applications requiring precise pH control and metal ion chelation.

Application

• Food & Beverage Industry: Used as an acidity regulator, stabilizer, and sequestrant in products like baking powder, jellies, and effervescent beverages.
• Pharmaceutical Manufacturing: Acts as a chiral resolving agent, a component in effervescent tablets, and a buffering agent in various medicinal formulations.
• Chemical Synthesis & Catalysis: Serves as a precursor or catalyst in organic synthesis and asymmetric reactions.
• Electroplating & Metal Treatment: Functions as a complexing agent in electroplating baths for improved metal deposition and surface finishing.
• Laboratory & Analytical Reagent: Employed as a standard or reagent in analytical chemistry and biochemical research.
• Textile Industry: Used in dyeing and printing processes as a mordant to improve color fastness.

Basic Information

Item	Details
Product Name	Potassium Tartrate Hemihydrate
CAS No.	6100-19-2
Molecular Formula	C4H4K2O6 · ½H2O
Molecular Weight	235.27 g/mol (anhydrous basis)
Synonyms	Potassium L-(+)-Tartrate Hemihydrate; Cream of Tartar (technical grade); Dipotassium Tartrate Hemihydrate; L-(+)-Tartaric Acid Dipotassium Salt Hemihydrate; E336; Seignette's Salt; Rochelle Salt (related compound); Dipotassium L-tartrate hemihydrate
EINECS	212-769-1

Quality Control

Our Potassium Tartrate Hemihydrate is manufactured under a stringent quality management system. It can be produced to meet various grade specifications, including Food Grade (FCC) and Pharmaceutical Grade standards. Every batch undergoes rigorous analytical testing to ensure identity, purity, and compliance with specified parameters. Certificates of Analysis (COA) are provided and traceability is maintained for full quality assurance.

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 prevent moisture absorption and caking. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (Titration)	≥ 99.0%
pH (5% Solution)	6.5 - 8.5
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm
Arsenic (As)	≤ 3 ppm
Water (Karl Fischer)	3.5 - 4.5% (Theoretical for hemihydrate)
Optical Rotation [α]20/D	+15.0° to +17.0°

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