Description

Potassium Phosphate Trihydrate, 98% is a high-purity inorganic salt widely used as a buffering agent and nutrient source. This compound is essential for applications requiring precise pH control and a bioavailable source of potassium and phosphate ions. It is a critical raw material for manufacturers in the pharmaceutical, food & beverage, and agricultural industries, where consistent quality and reliable supply are paramount.

Application

• Pharmaceutical Buffer & Excipient: Used in the formulation of parenteral solutions, oral medications, and biological culture media to maintain stable pH.
• Food Additive (Nutrient & pH Regulator): Functions as a potassium and phosphorus source in nutritional supplements and as a stabilizer in processed foods and beverages.
• Fertilizer & Agricultural Solutions: Serves as a highly soluble source of potassium (K) and phosphorus (P) in specialty liquid fertilizers and hydroponic nutrient systems.
• Industrial Process Chemical: Acts as a buffering agent, corrosion inhibitor, or sequestrant in water treatment, metal finishing, and detergent formulations.
• Laboratory Reagent: Employed in analytical chemistry and life science research for preparing standard solutions and buffer systems.
• Microbiological Media Component: Provides essential nutrients for the growth of microorganisms in fermentation and biotechnological processes.

Basic Information

Product Name	Potassium Phosphate Trihydrate, 98%
CAS No.	115281-28-2
Molecular Formula	KH₂PO₄·3H₂O
Molecular Weight	230.09 g/mol
Synonyms	Monopotassium Phosphate Trihydrate; Potassium Dihydrogen Phosphate Trihydrate; MKP Trihydrate; Prim-K™ (trihydrate form); KH₂PO₄·3H₂O; Phosphoric Acid, Monopotassium Salt, Trihydrate; Food Additive E340(i) (trihydrate); IUPAC: Potassium dihydrogen phosphate trihydrate
EINECS	Contact for details

Quality Control

Our Potassium Phosphate Trihydrate, 98% is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and physical properties. While this grade is suitable for industrial and technical applications, we also offer higher purity grades compliant with FCC, USP, or ACS standards upon request. A Certificate of Analysis (COA) is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept in its original, sealed packaging until use to prevent caking and degradation. Keep away from strong alkalis and incompatible materials.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (KH₂PO₄·3H₂O)	98.0% min.
pH (5% solution)	4.2 - 4.6
Loss on Drying	22.0 - 24.5%
Insoluble Matter	0.01% max.
Heavy Metals (as Pb)	10 ppm max.
Chloride (Cl)	50 ppm max.
Sulfate (SO₄)	100 ppm max.

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