Dipotassium phosphite

Cat. No.: HY-W583753 Purity: 95.02%: Data Sheet
COA

SDS
Handling Instructions
FAQs
Technical Support

Dipotassium phosphite is a phosphite salt and is an antibacterial agent. Dipotassium phosphite directly and indirectly affects development of Phytophthora infestans.Dipotassium phosphite reduces late blight severity in field-grown tomato plants and increases productivity of field-grown tomato plants. Dipotassium phosphite can be used for the research of late blight.

For research use only. We do not sell to patients.

Dipotassium phosphite Chemical Structure

CAS No. : 13492-26-7

Size	Stock	Quantity
Solid + Solvent (Highly Recommended)
10 mM * 1 mL in Water ready for reconstitution	In-stock	Estimated Time of Arrival: December 31
Solution
10 mM * 1 mL in Water	In-stock	Estimated Time of Arrival: December 31
Solid
250 mg	In-stock	Estimated Time of Arrival: December 31
500 mg	In-stock	Estimated Time of Arrival: December 31
1 g	Get quote
5 g	Get quote

or Bulk Inquiry

* Please select Quantity before adding items.

This product is a controlled substance and not for sale in your territory.

Featured Recommendations

•Related Screening Libraries:

•Related Small Molecules:

•Related Proteins:

Biological Activity
Purity & Documentation
References
Customer Review

Description

In Vivo

Dipotassium phosphite (2.5 mL/L of a 45.8% monopotassium and dipotassium phosphite formulation; foliar; every 7 days) in combination with fungicide reduces late blight severity by 90.01% and increases tomato yield by 638% relative to untreated controls^[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model:	Revolution hybrid (indeterminate type; open-field grown, naturally exposed to pathogen)^[1]
Dosage:	2.5 mL/L of a 45.8% monopotassium and dipotassium phosphite formulation
Administration:	foliar; every 7 days (12 total applications)
Result:	Reduced final late blight severity by 90.01% and area under the disease progress curve for severity (AUDPCs) by 93.11% relative to untreated control plants when applied every 7 days with fungicide rotation. Produced 36 flowers per plant, 41.65 fruits per plant, and a yield of 6.38 kg/plant, representing a 638% yield increase relative to the control when applied every 7 days with fungicide rotation.

Molecular Weight

158.18

Formula

HK₂O₃P

CAS No.

13492-26-7

Appearance

Solid

Color

White to off-white

SMILES

O=P(O[K])O[K]

Shipping

Room temperature in continental US; may vary elsewhere.

Storage

Store at room temperature 3 years

In solvent	-80°C	2 years
	-20°C	1 year

Solvent & Solubility

In Vitro:

H₂O : 100 mg/mL (632.19 mM; Need ultrasonic)

Preparing
Stock Solutions

Concentration Solvent Mass	1 mg	5 mg	10 mg

1 mM	6.3219 mL	31.6096 mL	63.2191 mL
5 mM	1.2644 mL	6.3219 mL	12.6438 mL
10 mM	0.6322 mL	3.1610 mL	6.3219 mL

View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 1 year; -20°C, 6 months. When stored at -80°C, please use it within 1 year. When stored at -20°C, please use it within 6 months.

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

Molarity Calculator
Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Concentration _(start) × Volume _(start) = Concentration _(final) × Volume _(final)

This equation is commonly abbreviated as: C₁V₁ = C₂V₂

Concentration _(start)

Volume _(start)

Concentration _(final)

Volume _(final)

In Vivo Dissolution Calculator

Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.

Calculation results:

Working solution concentration: mg/mL

This product has good water solubility, please refer to the measured solubility data in water/PBS/Saline for details.

The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only.If necessary, please contact MedChemExpress (MCE).

Purity & Documentation

Purity: 95.02%

Select Batch:

Data Sheet (273 KB) SDS (393 KB)

COA (249 KB)

Handling Instructions (2659 KB)

References

[1]. Álvarez-Romero P I, et al. Use of potassium phosphite, rotation of fungicides, ozonized water and chlorine dioxide to control late blight (Phytophthora infestans) in tomato crops (Solanum lycopersicum)[J]. Idesia, 2024, 42(1): 63-70.

Complete Stock Solution Preparation Table

Optional Solvent	Concentration Solvent Mass	1 mg	5 mg	10 mg	25 mg

H₂O	1 mM	6.3219 mL	31.6096 mL	63.2191 mL	158.0478 mL
	5 mM	1.2644 mL	6.3219 mL	12.6438 mL	31.6096 mL
	10 mM	0.6322 mL	3.1610 mL	6.3219 mL	15.8048 mL
	15 mM	0.4215 mL	2.1073 mL	4.2146 mL	10.5365 mL
	20 mM	0.3161 mL	1.5805 mL	3.1610 mL	7.9024 mL
	25 mM	0.2529 mL	1.2644 mL	2.5288 mL	6.3219 mL
	30 mM	0.2107 mL	1.0537 mL	2.1073 mL	5.2683 mL
	40 mM	0.1580 mL	0.7902 mL	1.5805 mL	3.9512 mL
	50 mM	0.1264 mL	0.6322 mL	1.2644 mL	3.1610 mL
	60 mM	0.1054 mL	0.5268 mL	1.0537 mL	2.6341 mL
	80 mM	0.0790 mL	0.3951 mL	0.7902 mL	1.9756 mL
	100 mM	0.0632 mL	0.3161 mL	0.6322 mL	1.5805 mL

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.