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Dipotassium Phosphite, Liquid

Identification

Synonyms: Di potassium phosphite; Potassium phosphite dibasic; DKPO3; Phosphonic acid dipotassium salt; dipotassium hydrogen phosphite
CAS No.: 16788-57-1 EC No.:(not available)
Molecular Weight: 228.205
Molecular Formula: K2HPO3
Structural Formula:dipotassium phosphite

Preparation

Dipotassium phosphite can be obtained by neutralization reaction between phosphorous acid (H3PO3) and potassium hydroxide (or potassium carbonate)
H3PO3+2KOH→K2HPO3+2H2O

or

H3PO3+K2CO3→K2HPO3+CO2+H2O

Application

1) Dipotassium phosphite is used in formulation of foliar fertilizer and water-soluble fertilizer.
2) Dipotassium phosphite is used as fungicide to control Oomycetes (esp. Phytophthora sp), similar to fosetyl aluminium (Aliette).

Specification*

Dipotassium Phosphite Content 50.0% min.
Chloride (Cl) 0.01% max.
Iron (Fe) 0.002% max.
Heavy metals 0.001% max.
Insolubles in water 0.2% max.
Appearance Clear, colorless, transparent liquid

Standard Packaging

25kgs or 250kgs/drum, 20mt/20’FCL

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Risks and Safety Information

Dipotassium phosphite is not regulated by UN as hazardous substance
For more information, please refer to MSDS.

No hazard

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