Monopotassium Phosphite CAS 13977-65-6 Purity >98.0% Factory

Short Description:

Chemical Name: Monopotassium Phosphite

Synonyms: Potassium Dihydrogen Phosphite

CAS: 13977-65-6

Purity: >98.0%  

Appearance: White Crystals

Production Capacity 2000 Tons per Year, High Quality

Contact: Dr. Alvin Huang

Mobile/Wechat/WhatsApp: +86-15026746401


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Shanghai Ruifu Chemical Co., Ltd. is the leading manufacturer and supplier of Monopotassium Phosphite (CAS: 13977-65-6) with high quality. Monopotassium Phosphite is a white crystals, easily deliquesces in air and soluble in water. We can provide COA, worldwide delivery, small and bulk quantities available. If you are interested in Monopotassium Phosphite, Please contact:

Chemical Properties:

Chemical Name Monopotassium Phosphite  
Synonyms Potassium Dihydrogen Phosphite 
Stock Status In Stock, Production Capacity 2000 Tons per Year
CAS Number 13977-65-6 
Molecular Formula H2KO3P
Molecular Weight 120.09 
Sensitive Hygroscopic 
Solubility  Easily Deliquesces in Air and Soluble in Water
Shipping Condition  Ambient Temperatures
Brand Ruifu Chemical


Item Specifications
Appearance White Crystals
Main Content (KH2PO3) >98.0% 
Water Insoluble Matter <0.30%
Chloride (Cl)  <0.01%
Iron (Fe)  <0.002%
Heavy Metals (as Pb) <0.0001%
K2O >38.0%
P2O5 >58.0%
PH 4.0~5.0 (1% Water Solution)
Moisture (by K.F) <0.50%
Infrared Spectrum Conforms to Structure
X-Ray Diffraction Conforms to Structure
Test Standard Enterprise Standard

Package & Storage:

Package25kg/bag, 25kg/Cardboard Drum, or according to customer's requirement.

Storage Condition: Air sensitive. Hygroscopic. Store in sealed containers at cool, dry and ventilated warehouse away from incompatible substances. Protect from air, light and moisture.


Sufficient Capacity: Sufficient facilities and technicians

Professional Service: One stop purchasing service

OEM Package: Custom package and label available

Fast Delivery: If within stock, three days delivery guaranteed

Stable Supply: Maintain reasonable stock    

Technical Support: Technology solution available

Custom Synthesis Service: Ranged from grams to kilos

High Quality: Established a complete quality assurance system


How to Purchase? Please contact Dr. Alvin Huang: or 

15 Years Experience? We have more than 15 years of experience in the manufacture and export of a wide range of high quality pharmaceutical intermediates or fine chemicals.

Main Markets? Sell to domestic market, North America, Europe, India, Korea, Japanese, Australia, etc.

Advantages? Superior quality, affordable price, professional services and technical support, fast delivery.

Quality AssuranceStrict quality control system. Professional equipment for analysis include NMR, LC-MS, GC, HPLC, ICP-MS, UV, IR, OR, K.F, ROI, LOD, MP, Clarity, Solubility, Microbial limit test, etc.

SamplesMost products provide free samples for quality evaluation, shipping cost should be paid by customers.

Factory AuditFactory audit welcome. Please make an appointment in advance.

MOQ? No MOQ. Small order is acceptable.

Delivery Time? If within stock, three days delivery guaranteed.

TransportationBy Express (FedEx, DHL), by Air, by Sea.

Documents? After sales service: COA, MOA, ROS, MSDS, etc. can be provided.

Custom SynthesisCan provide custom synthesis services to best fit your research needs.

Payment TermsProforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by T/T (Telex Transfer), PayPal, Western Union, etc. 


Monopotassium Phosphite (CAS: 13977-65-6), hygroscopic, soluble in water; insoluble in alcohol; slowly oxidized by air to phosphate.
1. In pesticides, it is mainly used in insecticides, fungicides intermediates. Monopotassium phosphite (KH2PO3) has a significant bactericidal effect, especially killing Botrytis cinerea, Fusarium cucumber biotypes, Fusarium watermelon biotypes, corn red mold, Pythium, Wo Valley Rhizoctonia, Sclerotinia and large dahliae. It is the first raw material choice for non-environmentally friendly pesticides.
2. In fertilizer applications, Monopotassium phosphite (KH2PO3) is an important source of high-purity potassium, phos phorous acid late in the roots may be microbial metabolic activity to phos phoric acid that is one of the major fertilizer for plants. It combines the potash, phosphate dual role. After using, there is non-polluting, non-toxic, no residue, etc.
3. In the industrial circulating water, Monopotassium phosphite (KH2PO3) can be used as a direct bactericide and calcium and magnesium ions complexing agents, organic phos phine alternative water treatment agent, which reduce environmental pollution.

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