Dipotassium hydrogen phosphate trihydrate

Chemical properties

crystalline solid

The Uses of Dipotassium hydrogen phosphate trihydrate

Potassium hydrogen phosphate trihydrate is widely used to prepare buffer solutions in molecular biology, biochemistry and chromatography. It is involved in the production of trypticase soy agar and then utilized for culturing bacteria. As a food additive, it is used in dry powder beverages, mineral supplements and imitation dairy creamers. It is also used as a stabilizer for non-dairy coffee creamers. Further, it is a common source of phosphorous and potassium.

What are the applications of Application

Dipotassium hydrogen phosphate trihydrate can be used to:
As a corrosion inhibitor. Dipotassium hydrogen phosphate forms a passivation film on the metal in alkaline solutions with low chloride contamination, which slows down the corrosion of carbon steel^[1].
As a catalyst. Dipotassium hydrogen phosphate powder catalyses the conversion of stable phosphoryl compounds to dialkyl (E, Z)-2-(1-acetyl-2-naphthalenyl)-2-butenedioate under thermal and microwave conditions in a solvent-free system^[2].
As a reducing agent. Dipotassium hydrogen phosphate (K₂HPO₄^.3H₂O) was used for the efficient reduction of graphene oxide nanosheets. Dipotassium hydrogen phosphate itself and the prepared graphene are environmentally friendly and cheap^[3].
As a nutrient. Used as a nutrient in antimicrobial media.

General Description

Potassium phosphate dibasic trihydrate (K₂HPO₄.3H₂O, Dipotassium hydrogen phosphate trihydrate, Dipotassium phosphate, di-Potassium hydrogen phosphate trihydrate) is the potassium salt having a pH in the range of 9.1-9.4.

References

[1] A. MOHAGHEGHI; R. A. Corrosion inhibition of carbon steel by dipotassium hydrogen phosphate in alkaline solutions with low chloride contamination[J]. Construction and Building Materials, 2018. DOI:10.1016/j.conbuildmat.2018.07.181.
[2] A. SOULDOZI; N. N; A Ramazani. Dipotassium Hydrogen Phosphate Powder Catalyzed Stereoselective O-Vinylation of 1-(2-Hydroxy-1-naphthyl)-1-ethanone[J]. Phosphorus Sulfur and Silicon and The Related Elements, 2006. DOI:10.1080/10426500500326578.
[3] XINMENG ZHANG. Dipotassium hydrogen phosphate as reducing agent for the efficient reduction of graphene oxide nanosheets[J]. Journal of Colloid and Interface Science, 2013. DOI:10.1016/j.jcis.2013.07.021.