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Monopotassium phosphate, MKP, (also potassium dihydrogenphosphate, KDP, or monobasic potassium phosphate), KH2PO4, is a soluble salt of potassium and the dihydrogen phosphate ion which is used as a fertilizer, a food additive and a fungicide. It is a source of phosphorus and potassium. It is also a buffering agent. When used in fertilizer mixtures with urea and ammonium phosphates, it minimizes escape of ammonia by keeping the acidity at a relatively low level.

Single crystals are paraelectric at room temperature. At temperatures below −150 °C (−238 °F) they become ferroelectric.

Monopotassium phosphate can exist in several polymorphs. At room temperature it forms paraelectric crystals with tetragonal symmetry. Upon cooling to −150 °C (−238 °F) it transforms to a ferroelectric phase of orthorhombic symmetry, and the transition temperature shifts up to −50 °C (−58 °F) to when hydrogen is replaced by deuterium. Heating to 190 °C (374 °F) changes its structure to monoclinic. When heated further, MKP decomposes, by loss of water, to potassium metaphosphate, KPO3, at 400 °C (752 °F).

Specification of Monopotassium phosphite

Product nameMonopotassium phosphite
CAS No7778-77-0
EINECS NO231-913-4
Molecular FormulaKH2PO4
Molecular weight136.08
Melting point252.6℃
KeywordMonopotassium phosphite
Packing25kg/woven bag
DescriptionWhite crystalline powder
Loss on Drying
Other namesMonopotassium phosphite
Brand namejinma

Payment Term

In Jinama, we have three terms used popularly that are

1. 100% T/T in advance

2. 30% T/T in advance, 70% T/T before shipment(or against Bill of Lading)

3. Irrevocable L/C at sight

Other terms are also available in Jinama, please kindly advise our sales.

Delivery Time

1. stock products: about 10 days

2. Production order: about 40 days to 60 days according to the order list.

3. Other requirements are negotiable.

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