Description

Potassium Carbonate Dihydrate is a high-purity, hydrated inorganic salt essential for a wide range of industrial processes. Its primary value lies in its role as a versatile alkaline agent and source of potassium ions, offering superior solubility and reactivity compared to the anhydrous form. This compound is critical for manufacturers in the glass, food, pharmaceutical, and chemical synthesis sectors who require a consistent and reliable source of high-quality potassium carbonate.

Application

• Glass Manufacturing: A key fluxing agent to lower the melting point of silica, improving the workability and clarity of specialty glass and optical lenses.
• Food Additive (FCC Grade): Used as an acidity regulator, stabilizer, and raising agent in products like wine, cocoa, and baked goods.
• Pharmaceutical Intermediate: Serves as a buffering agent and potassium source in the synthesis of various active pharmaceutical ingredients (APIs).
• Chemical Synthesis: Acts as a mild base and catalyst in organic reactions, including the production of potassium soaps and other potassium salts.
• Electrolyte & Buffer Solutions: Utilized in analytical chemistry and electroplating baths to maintain precise pH and ionic strength.
• Agriculture & Horticulture: A source of soluble potassium for specialty liquid fertilizers and pH adjustment in nutrient solutions.
• Fire Suppression: A component in dry chemical fire extinguishers (particularly for Class B and C fires) and flame-retardant formulations.
• Textile & Dyeing: Used in wool washing and as a pH modifier in dyeing processes to improve color fastness.

Basic Information

Product Name	Potassium Carbonate Dihydrate
CAS No.	16799-90-9
Molecular Formula	K2CO3·2H2O
Molecular Weight	174.24 g/mol
Synonyms	Potassium Carbonate Hydrate; Dipotassium Carbonate Dihydrate; Carbonic Acid, Dipotassium Salt, Dihydrate; Pearl Ash; Salt of Tartar; Potash; Kaliumcarbonat Dihydrat (German); Carbonate de Potassium Dihydraté (French)
EINECS	240-872-6 (for Potassium Carbonate, consult for hydrate specifics)

Quality Control

Our Potassium Carbonate Dihydrate is manufactured under a strict quality management system to ensure batch-to-batch consistency and reliability. We offer various grades, including Technical, Food (FCC), and Pharmaceutical grades, each meeting relevant purity specifications. Certificates of Analysis (COA) documenting assay, impurity profiles, and physical parameters are provided with every shipment to support your quality assurance protocols.

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 absorption of atmospheric moisture and caking. Keep away from strong acids.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (K2CO3·2H2O)	≥ 99.0%
pH (5% solution)	11.0 - 12.0
Loss on Drying	19.0 - 22.0%
Chloride (Cl)	≤ 0.005%
Sulfate (SO4)	≤ 0.005%
Heavy Metals (as Pb)	≤ 10 ppm
Iron (Fe)	≤ 10 ppm

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