Description

Potassium Phosphite is an inorganic salt valued for its dual role as a source of potassium and a systemic fungicide with plant health benefits. This compound is crucial for industries requiring an effective and efficient nutrient and disease management solution. It is primarily utilized in the agricultural sector for crop protection and nutritional programs, as well as in industrial applications such as water treatment and as a chemical intermediate.

Application

• Agricultural Fungicide: Used as a systemic agent to control diseases like downy mildew, late blight, and Phytophthora in various crops including fruits, vegetables, and vines.
• Fertilizer & Nutrient Supplement: Provides a bioavailable source of potassium and phosphite, stimulating plant growth and enhancing stress resistance.
• Water Treatment: Acts as a corrosion inhibitor and scale control agent in industrial water cooling systems.
• Chemical Synthesis: Serves as a precursor or intermediate in the production of other phosphite salts and specialty chemicals.
• Wood Preservation: Used in formulations to protect timber from fungal decay and mold.
• Professional Horticulture & Turf Management: Applied in golf courses, nurseries, and landscaping for disease prevention and plant vitality.

Basic Information

Product Name	Potassium Phosphite
CAS No.	13492-26-7
Molecular Formula	K2HPO3 or K3PO3 (commonly refers to mixtures)
Molecular Weight	158.18 g/mol (for K2HPO3)
Synonyms	Dipotassium hydrogen phosphite; Potassium hydrogen phosphite; Phosphorous acid, dipotassium salt; Monopotassium phosphite; Tripotassium phosphite; Fosfitopotásico (Spanish); Kaliumphosphit (German); K-Phite; Plant food grade phosphite
EINECS	Contact for details

Quality Control

Our Potassium Phosphite is manufactured under strict quality management systems to ensure batch-to-batch consistency and reliability. The product undergoes rigorous analytical testing, including assay, impurity profiling, and physical property verification, to meet relevant industry and agricultural standards. A Certificate of Analysis (COA) documenting purity, heavy metal limits, and other critical parameters is provided with each shipment.

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 (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can lead to caking or degradation.

Specification

Item	Specification
Appearance	White crystalline powder or solution
Identification (IR)	Conforms
Assay (as K2HPO3)	≥ 98.0%
pH (1% Solution)	6.0 - 8.0
Water Insolubles	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Loss on Drying	≤ 1.0%

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